srclist overlap message for exposure 1 of trigger 850471
uvot_overlap.pl vrs. 2010-12-20b fem started at 180728d23h43m32s280617usUT
The observation of trigger 850471 started 2018-07-28T17:58:22.5
Examining file ./850471_g1761_uvot_sky_srclist.fits
The exposure ID is 554493502
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (253.5583,-54.0350) with a roll angle of 251.7
It is square with sides of 8.03 arc min. for an area of 64.51 sq arc min
The BAT error circle is centered at (253.5690,-54.0310) with a radius of 3.000 arc min
This is 0.448 arc min from the center of the uvot region
The area of the BAT error circle is 28.27 sq. arc min
The UVOT/BAT overlap is 28.27 sq. arc min or 1.00 of the BAT error circle
The XRT error circle is centered at (253.5651,-54.0445) with a radius of 0.025 arc min
This is 0.620 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 850471
find_uvot_ag.pl vrs. 2017-02-17 fem started at 180728d23h43m33s307856usUT
Observation start time is 2018-07-28T17:58:22.5
Examining file ./850471_g1761_uvot_catalog_srclist.fits
The exposure ID is 554493502
The exposure is 149.879 sec.
The bin size is 2 pixels
The filter is WHITE
There are 190 detected source(s) for 850471_g1761
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 0.640
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 850471_g1761 has mag 18.51
Aspect correction adds -0.00151 degrees (-0.362 sec of time = -3.19 arc sec) to RA
Aspect correction adds -0.00011 degrees (-0.41 arcsec) to Dec
Total aspect correction is 3.22 arcsec
Star catalogs centered at 253.5494 , -54.0508 with radius 5.58 arc min.
n_usno: 5005 n_gsc: 0
*** WARNING -- bright star catalog has 10 entries brighter than 12 mag
The brightest has mag 10.46022
RA DEC Mag Color
bright star 0: 253.53121 (16:54:07.49) -54.06521 (-54:03:54.8) 10.87 USNO-V
bright star 1: 253.57580 (16:54:18.19) -54.06759 (-54:04:03.3) 10.46 USNO-V
bright star 2: 253.52923 (16:54:07.02) -54.02653 (-54:01:35.5) 10.56 USNO-V
bright star 3: 253.52106 (16:54:05.06) -54.08494 (-54:05:05.8) 11.50 USNO-V
bright star 4: 253.60548 (16:54:25.31) -54.08022 (-54:04:48.8) 11.82 USNO-V
bright star 5: 253.47450 (16:53:53.88) -54.02583 (-54:01:33.0) 11.29 USNO-V
bright star 6: 253.47416 (16:53:53.80) -54.02080 (-54:01:14.9) 11.94 USNO-V
bright star 7: 253.48101 (16:53:55.44) -54.08815 (-54:05:17.3) 11.83 USNO-V
bright star 8: 253.47104 (16:53:53.05) -54.10501 (-54:06:18.0) 11.54 USNO-V
bright star 9: 253.55903 (16:54:14.17) -53.96617 (-53:57:58.2) 11.00 USNO-V
Mean distance difference (CAT_DELTA) for 172 matched entries is 0.946" for 850471_g1761
Mean and std. dev of mag. difference (MAG_DELTA) are 1.793 and 0.873 for 850471_g1761
Found 33 entries without IDs and 17 entries that are acceptable afterglow candidates for 850471_g1761.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
10 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=253.5690 (16:54:16.56) DEC=-54.0310 (-54:01:51.6)
XRT distances are from RA=253.5651 (16:54:15.63) DEC=-54.0445 (-54:02:40.3)
-----------------
Entry 18 in the list of sources is a candidate afterglow for 850471_g1761 with 1x1 stamp
ra=253.58856 (16:54:21.25) dec=-54.04493 (-54:02:41.7) +/- 1.1" mag=18.15+/-0.35
dist=49.6 REFID=120
*** The position of this source is inconsistent with the XRT position.
The position is 65.0 arc sec from the BAT position.
src: 18 srclist_match has ID
src: 18 distr. of nearby unmatched sources: 0 0 0 0 0
Found 14 entries in star catalog(s) within 20.0" of the candidate.
printing all entries
(Entries within 2 arc sec of a source list entry are considered a match)
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5833 -54.0475 14.3 -1 USNO-B1 19.78 19.19 19.45
253.5824 -54.0445 13.2 -1 USNO-B1 19.20 18.73 18.94
253.5834 -54.0405 19.2 -1 USNO-B1 19.60 19.19 19.37
253.5855 -54.0429 9.8 -1 USNO-B1 14.98 13.98 14.42
253.5858 -54.0431 8.8 -1 USNO-B1 14.45 12.94 13.61 *
253.5884 -54.0445 1.7 -1 USNO-B1 99.99 14.63 99.99 *
253.5887 -54.0440 3.4 -1 USNO-B1 19.21 14.01 16.32 *
253.5914 -54.0500 19.3 -1 USNO-B1 17.56 17.33 17.43
253.5936 -54.0442 11.1 -1 USNO-B1 19.88 17.44 18.52
253.5939 -54.0438 12.0 -1 USNO-B1 18.40 17.48 17.89
253.5942 -54.0441 12.2 -1 USNO-B1 19.35 17.85 18.52
253.5955 -54.0477 17.8 -1 USNO-B1 19.65 19.60 19.62
253.5950 -54.0420 17.2 -1 USNO-B1 17.40 17.46 17.43
253.5975 -54.0462 19.6 -1 USNO-B1 18.60 18.72 18.67
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 33 in the list of sources is a candidate afterglow for 850471_g1761 with 1x1 stamp
ra=253.54517 (16:54:10.84) dec=-54.06042 (-54:03:37.5) +/- 1.1" mag=18.13+/-0.35
dist=71.1 REFID=178
*** The position of this source is inconsistent with the XRT position.
The position is 117.3 arc sec from the BAT position.
src: 33 distr. of nearby unmatched sources: 0 0 0 0 0
Found 19 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5478 -54.0552 19.5 -1 USNO-B1 21.59 20.91 21.21
253.5450 -54.0552 18.8 -1 USNO-B1 18.51 17.38 17.88
253.5463 -54.0573 11.4 -1 USNO-B1 17.76 16.45 17.03
253.5441 -54.0577 10.1 -1 USNO-B1 18.15 17.75 17.93
253.5489 -54.0586 10.2 -1 USNO-B1 16.34 15.16 15.68
253.5506 -54.0591 12.4 -1 USNO-B1 16.09 14.48 15.19
253.5512 -54.0592 13.4 -1 USNO-B1 16.03 15.61 15.80
253.5441 -54.0602 2.5 -1 USNO-B1 16.25 15.41 15.79 *
253.5453 -54.0619 5.3 -1 USNO-B1 19.27 21.64 20.59
253.5510 -54.0631 15.6 -1 USNO-B1 16.45 17.21 16.87
253.5512 -54.0637 17.4 -1 USNO-B1 99.99 15.91 99.99
253.5516 -54.0638 18.1 -1 USNO-B1 99.99 15.42 99.99
253.5520 -54.0642 19.8 -1 USNO-B1 99.99 14.07 99.99
253.5390 -54.0630 16.1 -1 USNO-B1 15.65 16.12 15.91
253.5374 -54.0628 18.4 -1 USNO-B1 20.18 14.34 16.93
253.5380 -54.0634 18.5 -1 USNO-B1 15.50 13.79 14.55
253.5384 -54.0637 18.5 -1 USNO-B1 19.41 17.30 18.24
253.5438 -54.0653 17.9 -1 USNO-B1 14.15 20.74 17.81
253.5465 -54.0658 19.6 -1 USNO-B1 20.82 19.18 19.91
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 41 in the list of sources is a candidate afterglow for 850471_g1761 with 1x1 stamp
ra=253.55396 (16:54:12.95) dec=-54.06567 (-54:03:56.4) +/- 1.1" mag=17.76+/-0.35
dist=79.7 REFID=111
*** The position of this source is inconsistent with the XRT position.
The position is 128.8 arc sec from the BAT position.
src: 41 distr. of nearby unmatched sources: 0 0 0 0 0
Found 20 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5565 -54.0604 19.8 -1 USNO-B1 22.05 20.48 21.18
253.5572 -54.0619 15.1 -1 USNO-B1 17.71 17.78 17.75
253.5510 -54.0631 11.2 -1 USNO-B1 16.45 17.21 16.87
253.5512 -54.0637 9.2 -1 USNO-B1 99.99 15.91 99.99
253.5516 -54.0638 8.5 -1 USNO-B1 99.99 15.42 99.99
253.5520 -54.0642 6.8 -1 USNO-B1 99.99 14.07 99.99
253.5579 -54.0640 10.4 -1 USNO-B1 17.49 17.17 17.31
253.5531 -54.0649 3.4 -1 USNO-B1 14.68 13.73 14.15 *
253.5465 -54.0658 15.7 -1 USNO-B1 20.82 19.18 19.91
253.5480 -54.0662 12.7 -1 USNO-B1 17.55 18.76 18.22
253.5606 -54.0658 14.0 -1 USNO-B1 17.30 16.88 17.07
253.5490 -54.0671 11.8 -1 USNO-B1 17.27 16.77 16.99
253.5600 -54.0681 15.5 -1 USNO-B1 17.91 17.55 17.71
253.5579 -54.0686 13.3 -1 USNO-B1 19.24 18.47 18.81
253.5508 -54.0695 15.1 -1 USNO-B1 16.14 15.84 15.97
253.5527 -54.0694 13.7 -1 USNO-B1 18.36 14.95 16.46
253.5609 -54.0689 18.8 -1 USNO-B1 19.03 18.96 18.99
253.5512 -54.0706 18.8 -1 USNO-B1 14.20 15.39 14.86
253.5522 -54.0708 19.0 -1 USNO-B1 14.45 16.14 15.39
253.5544 -54.0708 18.6 -1 USNO-B1 16.90 16.21 16.52
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 51 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.52004 (16:54:04.81) dec=-54.04461 (-54:02:40.6) +/- 1.1" mag=17.26+/-0.35
dist=95.3 REFID=76
*** The position of this source is inconsistent with the XRT position.
The position is 114.5 arc sec from the BAT position.
src: 51 distr. of nearby unmatched sources: 0 0 0 0 0
Found 20 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5269 -54.0470 16.9 -1 USNO-B1 20.11 18.44 19.18
253.5267 -54.0464 15.5 -1 USNO-B1 17.53 17.57 17.55
253.5232 -54.0486 15.9 -1 USNO-B1 17.87 18.40 18.16
253.5264 -54.0414 17.8 -1 USNO-B1 17.83 16.60 17.15
253.5236 -54.0431 9.3 -1 USNO-B1 20.17 18.25 19.10
253.5217 -54.0457 5.3 -1 USNO-B1 19.97 18.30 19.04
253.5219 -54.0444 3.9 -1 USNO-B1 99.99 16.12 99.99 *
253.5229 -54.0421 10.9 -1 USNO-B1 19.32 19.38 19.35
253.5186 -54.0451 3.4 -1 USNO-B1 14.71 12.68 13.58 *
253.5195 -54.0437 3.6 -1 USNO-B1 14.00 13.99 13.99 *
253.5197 -54.0426 7.4 -1 USNO-B1 18.78 18.35 18.54
253.5170 -54.0463 8.9 -1 USNO-B1 99.99 15.05 99.99
253.5188 -54.0422 9.0 -1 USNO-B1 17.78 18.41 18.13
253.5148 -54.0451 11.3 -1 USNO-B1 20.51 19.31 19.84
253.5138 -54.0462 14.3 -1 USNO-B1 19.01 18.28 18.60
253.5117 -54.0451 17.8 -1 USNO-B1 20.12 19.50 19.78
253.5118 -54.0437 17.8 -1 USNO-B1 17.53 16.95 17.21
253.5121 -54.0430 17.7 -1 USNO-B1 18.30 17.57 17.89
253.5112 -54.0442 18.7 -1 USNO-B1 17.41 17.50 17.46
253.5116 -54.0424 19.5 -1 USNO-B1 17.85 20.32 19.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 60 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.51655 (16:54:03.97) dec=-54.04653 (-54:02:47.5) +/- 1.1" mag=16.50+/-0.35
dist=102.9 REFID=56
*** The position of this source is inconsistent with the XRT position.
The position is 124.2 arc sec from the BAT position.
src: 60 srclist_match has ID
src: 60 distr. of nearby unmatched sources: 0 0 1 0 0
Found 22 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5232 -54.0486 16.0 -1 USNO-B1 17.87 18.40 18.16
253.5236 -54.0431 19.3 -1 USNO-B1 20.17 18.25 19.10
253.5217 -54.0457 11.3 -1 USNO-B1 19.97 18.30 19.04
253.5219 -54.0444 13.5 -1 USNO-B1 99.99 16.12 99.99
253.5186 -54.0502 14.0 -1 USNO-B1 19.75 18.67 19.15
253.5186 -54.0451 6.8 -1 USNO-B1 14.71 12.68 13.58 *
253.5195 -54.0437 12.0 -1 USNO-B1 14.00 13.99 13.99
253.5197 -54.0426 15.7 -1 USNO-B1 18.78 18.35 18.54
253.5170 -54.0463 1.2 -1 USNO-B1 99.99 15.05 99.99 *
253.5157 -54.0499 12.2 -1 USNO-B1 20.13 20.22 20.18
253.5188 -54.0422 16.2 -1 USNO-B1 17.78 18.41 18.13
253.5141 -54.0504 14.8 -1 USNO-B1 20.10 19.73 19.89
253.5148 -54.0451 6.2 -1 USNO-B1 20.51 19.31 19.84
253.5138 -54.0462 6.0 -1 USNO-B1 19.01 18.28 18.60
253.5123 -54.0515 19.9 -1 USNO-B1 21.44 20.91 21.15
253.5117 -54.0451 11.4 -1 USNO-B1 20.12 19.50 19.78
253.5118 -54.0437 14.4 -1 USNO-B1 17.53 16.95 17.21
253.5121 -54.0430 15.8 -1 USNO-B1 18.30 17.57 17.89
253.5112 -54.0442 14.0 -1 USNO-B1 17.41 17.50 17.46
253.5116 -54.0424 18.1 -1 USNO-B1 17.85 20.32 19.22
253.5091 -54.0485 17.2 -1 USNO-B1 19.72 19.67 19.69
253.5111 -54.0420 20.0 -1 USNO-B1 20.63 19.12 19.79
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 67 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.54585 (16:54:11.00) dec=-54.07279 (-54:04:22.1) +/- 1.1" mag=17.43+/-0.35
dist=109.6 REFID=83
*** The position of this source is inconsistent with the XRT position.
The position is 158.2 arc sec from the BAT position.
src: 67 distr. of nearby unmatched sources: 0 0 0 0 0
Found 20 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5508 -54.0695 16.0 -1 USNO-B1 16.14 15.84 15.97
253.5527 -54.0694 18.9 -1 USNO-B1 18.36 14.95 16.46
253.5465 -54.0696 11.6 -1 USNO-B1 15.66 17.78 16.84
253.5462 -54.0702 9.3 -1 USNO-B1 20.72 18.08 19.25
253.5512 -54.0706 13.7 -1 USNO-B1 14.20 15.39 14.86
253.5500 -54.0709 11.1 -1 USNO-B1 15.45 15.16 15.29
253.5522 -54.0708 15.2 -1 USNO-B1 14.45 16.14 15.39
253.5544 -54.0708 19.5 -1 USNO-B1 16.90 16.21 16.52
253.5482 -54.0712 7.7 -1 USNO-B1 15.20 15.16 15.18
253.5390 -54.0706 16.5 -1 USNO-B1 21.33 22.38 21.91
253.5543 -54.0714 18.5 -1 USNO-B1 18.36 15.12 16.56
253.5423 -54.0717 8.5 -1 USNO-B1 17.09 16.96 17.02
253.5457 -54.0722 2.0 -1 USNO-B1 16.23 14.89 15.48 *
253.5540 -54.0723 17.4 -1 USNO-B1 18.23 17.27 17.69
253.5543 -54.0726 17.8 -1 USNO-B1 16.40 16.67 16.55
253.5422 -54.0725 7.7 -1 USNO-B1 18.18 15.95 16.94
253.5471 -54.0753 9.4 -1 USNO-B1 19.11 18.32 18.67
253.5482 -54.0770 16.0 -1 USNO-B1 15.38 14.62 14.96
253.5451 -54.0773 16.3 -1 USNO-B1 19.17 18.60 18.85
253.5434 -54.0775 17.8 -1 USNO-B1 18.38 18.54 18.47
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 75 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.57625 (16:54:18.30) dec=-54.07939 (-54:04:45.8) +/- 1.1" mag=16.26+/-0.35
dist=127.7 REFID=70
*** The position of this source is inconsistent with the XRT position.
The position is 174.9 arc sec from the BAT position.
src: 75 distr. of nearby unmatched sources: 1 1 0 0 0
Found 13 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5688 -54.0760 19.9 -1 USNO-B1 20.39 19.84 20.08
253.5694 -54.0769 17.0 -1 USNO-B1 21.00 16.18 18.32
253.5725 -54.0765 13.1 -1 USNO-B1 21.57 19.49 20.41
253.5788 -54.0744 18.7 -1 USNO-B1 11.95 15.71 14.04 *
253.5697 -54.0777 15.0 -1 USNO-B1 17.12 16.46 16.75
253.5726 -54.0770 11.4 -1 USNO-B1 21.49 18.25 19.69
253.5806 -54.0747 19.3 -1 USNO-B1 20.17 19.54 19.82
253.5729 -54.0777 9.3 -1 USNO-B1 16.30 16.00 16.13
253.5680 -54.0810 18.3 -1 USNO-B1 19.21 17.63 18.33
253.5784 -54.0799 4.9 -1 USNO-B1 13.70 11.71 12.59 *
253.5788 -54.0800 5.9 -1 USNO-B1 99.99 12.55 99.99 *
253.5818 -54.0808 12.8 -1 USNO-B1 19.39 18.26 18.76
253.5774 -54.0837 15.6 -1 USNO-B1 17.22 16.50 16.82
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 80 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.57967 (16:54:19.12) dec=-54.08042 (-54:04:49.5) +/- 1.1" mag=14.67+/-0.35
dist=132.8 REFID=13
*** The position of this source is inconsistent with the XRT position.
The position is 179.3 arc sec from the BAT position.
src: 80 distr. of nearby unmatched sources: 1 1 0 0 0
Found 13 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5726 -54.0770 19.2 -1 USNO-B1 21.49 18.25 19.69
253.5729 -54.0777 17.3 -1 USNO-B1 16.30 16.00 16.13
253.5784 -54.0799 3.3 -1 USNO-B1 13.70 11.71 12.59 *
253.5788 -54.0800 2.3 -1 USNO-B1 99.99 12.55 99.99 *
253.5818 -54.0808 4.8 -1 USNO-B1 19.39 18.26 18.76
253.5864 -54.0795 14.5 -1 USNO-B1 21.31 19.90 20.53
253.5774 -54.0837 12.8 -1 USNO-B1 17.22 16.50 16.82
253.5889 -54.0795 19.8 -1 USNO-B1 19.42 20.41 19.97
253.5882 -54.0812 18.3 -1 USNO-B1 19.28 19.64 19.48
253.5844 -54.0837 15.4 -1 USNO-B1 18.27 17.26 17.71
253.5848 -54.0839 16.5 -1 USNO-B1 18.31 15.91 16.98
253.5797 -54.0857 18.9 -1 USNO-B1 17.91 17.39 17.62
253.5839 -54.0854 19.9 -1 USNO-B1 17.31 16.71 16.98
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 83 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.62952 (16:54:31.08) dec=-54.04454 (-54:02:40.4) +/- 1.1" mag=17.53+/-0.35
dist=136.1 REFID=79
*** The position of this source is inconsistent with the XRT position.
The position is 136.9 arc sec from the BAT position.
src: 83 distr. of nearby unmatched sources: 0 0 0 0 0
Found 17 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.6229 -54.0407 19.6 -1 USNO-B1 16.49 15.80 16.11
253.6254 -54.0475 13.7 -1 USNO-B1 17.08 16.13 16.55
253.6253 -54.0399 19.0 -1 USNO-B1 19.98 18.50 19.16
253.6276 -54.0438 4.8 -1 USNO-B1 18.89 18.34 18.58
253.6281 -54.0438 4.0 -1 USNO-B1 18.89 17.17 17.93 *
253.6278 -54.0397 17.7 -1 USNO-B1 19.54 18.10 18.74
253.6294 -54.0440 2.0 -1 USNO-B1 15.96 15.07 15.47 *
253.6302 -54.0483 13.5 -1 USNO-B1 21.49 20.54 20.96
253.6292 -54.0413 11.6 -1 USNO-B1 19.69 18.78 19.18
253.6316 -54.0483 14.3 -1 USNO-B1 21.07 20.14 20.55
253.6317 -54.0481 13.8 -1 USNO-B1 25.67 21.40 23.30
253.6319 -54.0484 14.9 -1 USNO-B1 21.25 21.28 21.27
253.6314 -54.0404 15.5 -1 USNO-B1 22.49 19.93 21.07
253.6321 -54.0424 9.5 -1 USNO-B1 20.91 20.07 20.44
253.6342 -54.0449 9.9 -1 USNO-B1 17.91 18.95 18.49
253.6365 -54.0423 16.8 -1 USNO-B1 18.45 18.95 18.73
253.6385 -54.0457 19.5 -1 USNO-B1 19.05 19.68 19.40
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 84 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.59620 (16:54:23.09) dec=-54.07765 (-54:04:39.5) +/- 1.1" mag=17.22+/-0.35
dist=136.1 REFID=102
*** The position of this source is inconsistent with the XRT position.
The position is 177.5 arc sec from the BAT position.
src: 84 srclist_match has ID
src: 84 distr. of nearby unmatched sources: 0 1 0 0 2
Found 21 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5882 -54.0756 18.5 -1 USNO-B1 99.99 16.01 99.99
253.5889 -54.0755 17.4 -1 USNO-B1 99.99 16.29 99.99
253.5946 -54.0725 18.8 -1 USNO-B1 18.66 18.14 18.37
253.5903 -54.0758 14.2 -1 USNO-B1 17.34 16.93 17.11
253.5960 -54.0722 19.7 -1 USNO-B1 19.08 17.73 18.33
253.5950 -54.0732 16.3 -1 USNO-B1 18.87 18.58 18.71
253.5953 -54.0740 13.2 -1 USNO-B1 20.08 18.26 19.07
253.5957 -54.0741 12.8 -1 USNO-B1 19.28 18.27 18.72
253.5986 -54.0725 19.3 -1 USNO-B1 20.00 19.61 19.78
253.5937 -54.0764 6.9 -1 USNO-B1 17.21 15.90 16.48
253.5889 -54.0795 16.8 -1 USNO-B1 19.42 20.41 19.97
253.5996 -54.0731 17.9 -1 USNO-B1 19.33 20.40 19.92
253.5960 -54.0778 0.7 -1 USNO-B1 99.99 13.45 99.99 *
253.5959 -54.0781 1.6 -1 USNO-B1 15.06 13.43 14.15 *
253.5966 -54.0783 2.5 -1 USNO-B1 14.02 13.09 13.50 *
253.5981 -54.0776 4.0 -1 USNO-B1 18.46 12.75 15.29 *
253.6029 -54.0756 15.8 -1 USNO-B1 16.80 17.36 17.11
253.6036 -54.0755 17.4 -1 USNO-B1 23.46 16.24 19.45
253.5999 -54.0794 10.0 -1 USNO-B1 15.96 14.80 15.32
253.5945 -54.0824 17.4 -1 USNO-B1 17.76 18.63 18.24
253.6013 -54.0794 12.4 -1 USNO-B1 15.08 17.10 16.20
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 90 in the list of sources is a candidate afterglow for 850471_g1761 with 1x1 stamp
ra=253.59640 (16:54:23.14) dec=-54.07908 (-54:04:44.7) +/- 1.1" mag=17.88+/-0.35
dist=140.8 REFID=121
*** The position of this source is inconsistent with the XRT position.
The position is 182.5 arc sec from the BAT position.
src: 90 distr. of nearby unmatched sources: 0 0 0 1 1
Found 20 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5903 -54.0758 17.6 -1 USNO-B1 17.34 16.93 17.11
253.5953 -54.0740 18.4 -1 USNO-B1 20.08 18.26 19.07
253.5957 -54.0741 18.0 -1 USNO-B1 19.28 18.27 18.72
253.5937 -54.0764 11.1 -1 USNO-B1 17.21 15.90 16.48
253.5889 -54.0795 15.9 -1 USNO-B1 19.42 20.41 19.97
253.5882 -54.0812 18.9 -1 USNO-B1 19.28 19.64 19.48
253.5960 -54.0778 4.6 -1 USNO-B1 99.99 13.45 99.99
253.5959 -54.0781 3.8 -1 USNO-B1 15.06 13.43 14.15 *
253.5966 -54.0783 2.8 -1 USNO-B1 14.02 13.09 13.50 *
253.5981 -54.0776 6.4 -1 USNO-B1 18.46 12.75 15.29 *
253.6029 -54.0756 18.5 -1 USNO-B1 16.80 17.36 17.11
253.6036 -54.0755 19.9 -1 USNO-B1 23.46 16.24 19.45
253.5999 -54.0794 7.4 -1 USNO-B1 15.96 14.80 15.32
253.5945 -54.0824 12.5 -1 USNO-B1 17.76 18.63 18.24
253.6013 -54.0794 10.3 -1 USNO-B1 15.08 17.10 16.20
253.5943 -54.0834 16.2 -1 USNO-B1 16.68 16.21 16.42
253.5954 -54.0834 15.6 -1 USNO-B1 19.50 15.91 17.50
253.5964 -54.0835 15.9 -1 USNO-B1 19.56 18.48 18.96
253.6055 -54.0802 19.6 -1 USNO-B1 12.80 11.03 11.82 *
253.6019 -54.0832 18.9 -1 USNO-B1 17.09 16.84 16.95
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 92 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.51030 (16:54:02.47) dec=-54.01908 (-54:01:08.7) +/- 1.1" mag=16.12+/-0.35
dist=147.8 REFID=36
*** The position of this source is inconsistent with the XRT position.
The position is 131.3 arc sec from the BAT position.
src: 92 distr. of nearby unmatched sources: 0 1 0 0 0
Found 13 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5184 -54.0213 18.8 -1 USNO-B1 16.56 16.25 16.39
253.5156 -54.0207 12.7 -1 USNO-B1 17.57 17.07 17.29
253.5175 -54.0189 15.3 -1 USNO-B1 16.33 15.77 16.02
253.5082 -54.0201 5.8 -1 USNO-B1 99.99 17.61 99.99
253.5031 -54.0222 18.8 -1 USNO-B1 19.73 18.77 19.20
253.5098 -54.0186 2.2 -1 USNO-B1 14.23 13.14 13.63 *
253.5150 -54.0164 13.9 -1 USNO-B1 17.52 16.98 17.22
253.5033 -54.0212 16.6 -1 USNO-B1 17.39 17.09 17.22
253.5050 -54.0187 11.3 -1 USNO-B1 17.71 17.77 17.74
253.5105 -54.0143 17.3 -1 USNO-B1 22.32 24.39 23.47
253.5096 -54.0138 18.9 -1 USNO-B1 23.32 20.91 21.98
253.5041 -54.0155 18.5 -1 USNO-B1 19.92 19.09 19.46
253.5035 -54.0155 19.2 -1 USNO-B1 18.95 18.93 18.94
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 93 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.50221 (16:54:00.53) dec=-54.02629 (-54:01:34.7) +/- 1.1" mag=16.22+/-0.35
dist=148.4 REFID=34
*** The position of this source is inconsistent with the XRT position.
The position is 142.2 arc sec from the BAT position.
src: 93 distr. of nearby unmatched sources: 0 0 0 0 0
Found 24 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5087 -54.0292 17.1 -1 USNO-B1 21.22 21.72 21.50
253.5106 -54.0271 17.9 -1 USNO-B1 21.71 19.93 20.72
253.5087 -54.0280 15.0 -1 USNO-B1 20.44 22.08 21.35
253.5035 -54.0317 19.7 -1 USNO-B1 17.77 18.11 17.96
253.5041 -54.0299 13.5 -1 USNO-B1 20.38 19.73 20.02
253.5092 -54.0252 15.4 -1 USNO-B1 20.14 20.23 20.19
253.5094 -54.0249 15.9 -1 USNO-B1 18.36 21.68 20.21
253.5013 -54.0287 9.0 -1 USNO-B1 19.49 21.42 20.56
253.5005 -54.0288 9.7 -1 USNO-B1 18.94 19.32 19.15
253.5002 -54.0287 9.6 -1 USNO-B1 19.56 20.78 20.24
253.5026 -54.0258 2.0 -1 USNO-B1 14.10 13.16 13.57 *
253.5021 -54.0255 2.9 -1 USNO-B1 14.42 13.07 13.67 *
253.5016 -54.0253 3.9 -1 USNO-B1 13.98 14.85 14.46 *
253.5020 -54.0248 5.4 -1 USNO-B1 15.99 15.49 15.71
253.5020 -54.0246 6.2 -1 USNO-B1 14.63 15.86 15.31
253.4950 -54.0293 18.7 -1 USNO-B1 15.38 14.79 15.05
253.5031 -54.0222 14.9 -1 USNO-B1 19.73 18.77 19.20
253.5033 -54.0212 18.4 -1 USNO-B1 17.39 17.09 17.22
253.4951 -54.0264 15.0 -1 USNO-B1 17.93 16.75 17.27
253.4984 -54.0241 11.4 -1 USNO-B1 15.29 14.82 15.03
253.4941 -54.0265 17.3 -1 USNO-B1 17.35 17.35 17.35
253.5006 -54.0218 16.7 -1 USNO-B1 17.55 18.01 17.81
253.4980 -54.0231 14.4 -1 USNO-B1 99.99 16.62 99.99
253.4959 -54.0241 15.4 -1 USNO-B1 19.11 18.46 18.75
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 101 in the list of sources is a candidate afterglow for 850471_g1761 with 1x1 stamp
ra=253.50858 (16:54:02.06) dec=-54.01777 (-54:01:04.0) +/- 1.1" mag=17.67+/-0.35
dist=153.6 REFID=138
*** The position of this source is inconsistent with the XRT position.
The position is 136.4 arc sec from the BAT position.
src: 101 distr. of nearby unmatched sources: 0 1 0 0 0
Found 16 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5156 -54.0207 18.3 -1 USNO-B1 17.57 17.07 17.29
253.5175 -54.0189 19.3 -1 USNO-B1 16.33 15.77 16.02
253.5082 -54.0201 8.4 -1 USNO-B1 99.99 17.61 99.99
253.5031 -54.0222 19.6 -1 USNO-B1 19.73 18.77 19.20
253.5098 -54.0186 3.8 -1 USNO-B1 14.23 13.14 13.63 *
253.5150 -54.0164 14.5 -1 USNO-B1 17.52 16.98 17.22
253.5033 -54.0212 16.7 -1 USNO-B1 17.39 17.09 17.22
253.5050 -54.0187 8.3 -1 USNO-B1 17.71 17.77 17.74
253.5142 -54.0139 18.4 -1 USNO-B1 17.98 18.07 18.03
253.5105 -54.0143 13.2 -1 USNO-B1 22.32 24.39 23.47
253.5096 -54.0138 14.3 -1 USNO-B1 23.32 20.91 21.98
253.5111 -54.0131 17.6 -1 USNO-B1 19.33 19.95 19.67
253.5041 -54.0155 12.6 -1 USNO-B1 19.92 19.09 19.46
253.5035 -54.0155 13.4 -1 USNO-B1 18.95 18.93 18.94
253.5028 -54.0154 14.9 -1 USNO-B1 18.59 17.53 18.00
253.5004 -54.0165 17.9 -1 USNO-B1 21.66 25.45 23.77
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 112 in the list of sources is a candidate afterglow for 850471_g1761 with 3x3 stamp
ra=253.50630 (16:54:01.51) dec=-54.07137 (-54:04:16.9) +/- 1.1" mag=17.15+/-0.35
dist=157.4 REFID=90
*** The position of this source is inconsistent with the XRT position.
The position is 196.7 arc sec from the BAT position.
src: 112 srclist_match has ID
src: 112 distr. of nearby unmatched sources: 0 0 0 0 0
Found 13 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5114 -54.0697 12.3 -1 USNO-B1 18.94 17.99 18.41
253.5076 -54.0674 14.5 -1 USNO-B1 15.33 13.92 14.55
253.5135 -54.0717 15.2 -1 USNO-B1 17.28 16.97 17.11
253.5090 -54.0691 9.9 -1 USNO-B1 16.03 15.64 15.81
253.5131 -54.0722 14.6 -1 USNO-B1 17.57 17.28 17.41
253.5129 -54.0724 14.4 -1 USNO-B1 18.68 17.45 18.00
253.5061 -54.0712 0.8 -1 USNO-B1 99.99 15.48 99.99 *
253.5021 -54.0685 13.7 -1 USNO-B1 18.78 19.51 19.19
253.5040 -54.0715 4.9 -1 USNO-B1 99.99 13.92 99.99
253.5003 -54.0691 15.1 -1 USNO-B1 20.41 20.87 20.67
253.5031 -54.0717 6.8 -1 USNO-B1 14.64 13.50 14.00
253.5082 -54.0761 17.4 -1 USNO-B1 15.51 15.25 15.37
253.5047 -54.0757 16.1 -1 USNO-B1 18.09 17.33 17.67
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 126 in the list of sources is a candidate afterglow for 850471_g1761 with 1x1 stamp
ra=253.49841 (16:53:59.62) dec=-54.01348 (-54:00:48.5) +/- 1.1" mag=18.18+/-0.35
dist=180.0 REFID=131
*** The position of this source is inconsistent with the XRT position.
The position is 162.1 arc sec from the BAT position.
src: 126 distr. of nearby unmatched sources: 0 0 0 0 0
Found 18 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5041 -54.0155 14.0 -1 USNO-B1 19.92 19.09 19.46
253.5035 -54.0155 13.1 -1 USNO-B1 18.95 18.93 18.94
253.5028 -54.0154 11.6 -1 USNO-B1 18.59 17.53 18.00
253.5004 -54.0165 11.8 -1 USNO-B1 21.66 25.45 23.77
253.4973 -54.0175 14.6 -1 USNO-B1 18.39 18.96 18.71
253.4967 -54.0175 14.9 -1 USNO-B1 21.03 20.04 20.48
253.5010 -54.0144 6.3 -1 USNO-B1 16.94 16.47 16.68
253.4994 -54.0130 2.7 -1 USNO-B1 15.06 13.46 14.17 *
253.4934 -54.0159 13.9 -1 USNO-B1 20.34 22.09 21.31
253.5046 -54.0105 17.0 -1 USNO-B1 18.73 19.33 19.06
253.4997 -54.0122 5.5 -1 USNO-B1 14.40 14.13 14.25
253.4996 -54.0120 6.0 -1 USNO-B1 14.53 14.38 14.45
253.4934 -54.0142 10.9 -1 USNO-B1 17.66 17.62 17.64
253.5003 -54.0089 16.9 -1 USNO-B1 16.65 16.31 16.46
253.4921 -54.0119 14.5 -1 USNO-B1 17.63 17.37 17.49
253.4890 -54.0135 19.9 -1 USNO-B1 20.59 19.92 20.22
253.4960 -54.0097 14.4 -1 USNO-B1 19.11 19.23 19.18
253.4990 -54.0080 19.6 -1 USNO-B1 17.15 17.30 17.23
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 128 in the list of sources is a candidate afterglow for 850471_g1761 with 1x1 stamp
ra=253.47913 (16:53:54.99) dec=-54.04588 (-54:02:45.2) +/- 1.1" mag=18.20+/-0.35
dist=181.8 REFID=175
*** The position of this source is inconsistent with the XRT position.
The position is 197.4 arc sec from the BAT position.
src: 128 distr. of nearby unmatched sources: 0 0 0 0 0
Found 20 entries in star catalog(s) within 20.0" of the candidate.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.4874 -54.0470 17.9 -1 USNO-B1 16.26 16.59 16.44
253.4874 -54.0464 17.6 -1 USNO-B1 16.87 16.96 16.92
253.4823 -54.0481 10.4 -1 USNO-B1 20.04 16.06 17.83
253.4834 -54.0428 14.2 -1 USNO-B1 19.93 19.60 19.75
253.4818 -54.0491 12.8 -1 USNO-B1 16.98 16.58 16.76
253.4816 -54.0476 8.0 -1 USNO-B1 19.81 16.31 17.86
253.4802 -54.0461 2.4 -1 USNO-B1 17.67 15.46 16.44 *
253.4798 -54.0453 2.6 -1 USNO-B1 16.21 15.56 15.85 *
253.4796 -54.0439 7.3 -1 USNO-B1 17.76 15.23 16.35
253.4789 -54.0447 4.4 -1 USNO-B1 20.38 18.44 19.30
253.4792 -54.0434 8.9 -1 USNO-B1 18.00 18.31 18.17
253.4777 -54.0487 10.6 -1 USNO-B1 20.74 14.48 17.26
253.4773 -54.0481 9.0 -1 USNO-B1 16.39 15.33 15.80
253.4759 -54.0497 15.2 -1 USNO-B1 18.92 16.92 17.81
253.4755 -54.0490 13.7 -1 USNO-B1 17.27 16.83 17.03
253.4754 -54.0493 14.8 -1 USNO-B1 18.57 17.56 18.01
253.4754 -54.0497 15.9 -1 USNO-B1 18.55 18.42 18.48
253.4732 -54.0429 16.5 -1 USNO-B1 18.77 19.67 19.27
253.4713 -54.0487 19.4 -1 USNO-B1 16.72 16.29 16.48
253.4702 -54.0459 18.8 -1 USNO-B1 16.73 16.80 16.77
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 4 entries in star catalog(s) within 10" of the XRT position.
RA Dec Sep. Match USNO/ USNO-B USNO-R USNO-V
GSC GSC-F GSC-J GSC-V
253.5643 -54.0443 2.0 -1 USNO-B1 20.65 20.33 20.47
253.5663 -54.0460 5.9 -1 USNO-B1 18.64 18.90 18.78
253.5679 -54.0432 7.6 -1 USNO-B1 16.01 15.05 15.48
253.5674 -54.0422 9.8 -1 USNO-B1 16.89 17.22 17.07
The closest star is 2.01" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=253.56450 (16:54:15.48) dec=-54.04455 (-54:02:40.4) +/- 1.1" mag=16.79+/-0.35 dist=1.3 REFID=63
There are no candidates inside BAT error circle, but outside XRT error circle.
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 850471
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: high density of stars
SRCLIST PROBLEM: high density of stars, srclist filled telemetry buffer
See notes for more details.
2 source(s) near the XRT position were rejected as afterglow candidate(s). See
notes for details.
------ Start for Possible Stand-alone Circular ----
In response to GRB180728 (Swift/BAT trigger 850471) at 17:29:00 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1740 seconds after the BAT trigger. No credible afterglow candidate
has been found in the initial data products. The 2.7'x2.7' sub-image covers
100% of the XRT error circle. Because of the density of catalogued stars,
further analysis is required to report an upper limit for any afterglow in the
sub-image. The 8'x8' region for the list of sources generated on-board covers
100% of the XRT error circle. Because of the density of catalogued stars,
further analysis is required to report an upper limit for any afterglow in the
region. No correction has been made for the expected extinction corresponding
to E(B-V) of 0.29.
------- notes for trigger 850471 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 180728d23h43m40s652021usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=850471
-expid=554493502 -meonly -msg_srclist
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/850471/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
XRT position found for srclist. XRT position found for Genie image. BAT
position found.
UVOT exposure began at MET 554493502.4672 or about 2018:209:17:58:17 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 111% of the srclist region. Found 190 sources
in srclist catalog. WARNING -- srclist catalog buffer filled. Found 33 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 19.22 mag.
Found 79 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. Found 8 Genie image source(s) without IDs. There are 0 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.10 mag. Found 1112 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 108% of the Genie image region.
Genie image analysis:
Found 121109.2 counts in the large background region of 4327.0 pixels or a rate
of 27.989 counts/pixel in a radius of 45.0 arcsec. Based on this background,
the typical 5-sigma UL at a random point in the Genie image is 19.54 mag. for a
4-arcsec aperture.
Found 9398.8 counts in the XRT position region of 194.0 pixels or a rate of
48.447 counts/pixel in a radius of 8.0 arcsec. The net count rate (using local
background region) at the XRT position is 25.306 +/- 0.688 (1-sigma) cps or
16.27 mag and a range from 16.24 to 16.30 mag. The 3-sigma UL at the XRT
position is 27.369 cps or 16.19 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 18.51 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 253.5645 dec= -54.0446 mag=16.79 sep=1.31".
The closest srclist source has ra= 253.5645 dec= -54.0446 mag=16.79 sep=1.31".
Found 2 Genie source(s) within 10.0" of the XRT position. The brightest such
source has ra= 253.5647 dec= -54.0445 mag=16.19 sep=0.98". The closest Genie
source has ra= 253.5647 dec= -54.0445 mag=16.19 sep=0.98".
Report rejected UVOT sources within 10 arcsec XRT position.
Such sources are usually NOT the afterglow.
****THIS SOURCE NEAR XRT POSITION WAS REJECTED--USE WITH CAUTION****
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 1740 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 16:54:15.52 = 253.56465
DEC(J2000) = -54:02:40.3 = -54.04454
with a 90%-confidence error radius of about 0.61 arc sec. This position is 0.98
arc sec. from the center of the XRT error circle. The estimated magnitude is
16.19 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.29.
All AG candidates sorted by magnitude for the current finding chart.
(U/V/White SRCLIST mags < 17.5/17.5/18.5 are reliable. Mag > 18.5/18.5/19.5 are
not. Others are uncertain.)
(U/V/White Genie image mags < 18.0/18.0/19.0 are reliable. Mag > 19.0/19.0/20.0
are not. Others are uncertain.)
(Magnitudes followed by * have been corrected for exposure.)
---MET--- -dt- filter ---RA-- ---DEC--- -MAG/Limit Dist(") Source Asp.Corr?
554493502 1739 WHITE srclist found no candidates.
554493502 1739 WHITE image found no candidates.
List afterglow candidates for other finding charts.
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