image overlap message for exposure 1 of trigger 1046414
uvot_overlap.pl vrs. 2010-12-20b fem started at 210502d17h58m51s111211usUT
The observation of trigger 1046414 started 2021-05-02T17:47:34.8
Examining file 1046414_g480_uvot_sky_image.fits
The exposure ID is 641670454
The exposure time is 149.868 (seconds)
The filter is WHITE.
The uvot region is centered at (270.7667,-29.8303) with a roll angle of 95.4
It is square with sides of 2.68 arc min. for an area of 7.17 sq arc min
The BAT error circle is centered at (270.7420,-29.8180) with a radius of 3.000 arc min
This is 1.482 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 7.12 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (270.7590,-29.8302) with a radius of 0.098 arc min
This is 0.400 arc min from the center of the uvot region
The area of the XRT error circle is 0.030 sq. arc min
The UVOT/XRT overlap is 0.030 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1046414
find_uvot_ag.pl vrs. 2020-10-30 fem started at 210502d17h58m53s247772usUT
Observation start time is 2021-05-02T17:47:34.8
Examining file 1046414_g480_uvot_catalog_image.fits
The exposure ID is 641670454
The exposure is 149.868 sec.
The bin size is 2 pixels
The filter is WHITE
There are 64 detected source(s) for 1046414_g480
Aspect correction adds 0.00240 degrees (0.577 sec of time = 7.50 arc sec) to RA
Aspect correction adds -0.00083 degrees (-2.99 arcsec) to Dec
Total aspect correction is 8.08 arcsec
Star catalogs centered at 270.7696 , -29.8300 with radius 2.63 arc min.
n_usno: 990 n_gsc: 0
*** WARNING -- bright star catalog has 8 entries brighter than 12 mag
The brightest has mag 10.625
RA DEC Mag Color
bright star 0: 270.79215 (18:03:10.12) -29.83261 (-29:49:57.4) 11.95 USNO-V
bright star 1: 270.78536 (18:03:08.49) -29.84804 (-29:50:52.9) 11.42 USNO-R
bright star 2: 270.79529 (18:03:10.87) -29.83672 (-29:50:12.2) 11.62 USNO-R
bright star 3: 270.77556 (18:03:06.13) -29.80526 (-29:48:18.9) 11.99 USNO-V
bright star 4: 270.80073 (18:03:12.17) -29.83583 (-29:50:09.0) 11.04 USNO-R
bright star 5: 270.79986 (18:03:11.97) -29.81553 (-29:48:55.9) 11.11 USNO-R
bright star 6: 270.73606 (18:02:56.65) -29.84205 (-29:50:31.4) 10.70 USNO-V
bright star 7: 270.72470 (18:02:53.93) -29.82484 (-29:49:29.4) 10.62 USNO-R
Mean distance difference (CAT_DELTA) for 49 matched entries is 1.133" for 1046414_g480
Mean and std. dev of mag. difference (MAG_DELTA) are 1.490 and 1.009 for 1046414_g480
Found 18 entries without IDs and 15 entries that are acceptable afterglow candidates for 1046414_g480.
Acceptable entries have no ID, XRT distances < 14.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
3 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=270.7420 (18:02:58.08) DEC=-29.8180 (-29:49:04.8)
XRT distances are from RA=270.7590 (18:03:02.16) DEC=-29.8302 (-29:49:48.7)
*** WARNING 28 per cent of entries have no IDs.
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.76162 (18:03:02.79) dec=-29.83046 (-29:49:49.6) +/- 0.6" mag=15.82+/-0.14
dist=8.2 REFID=39 major=1.4 minor=1.1 flag=0
Found 17 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
270.7679 -29.8305 19.5 -1 USNO-B1 19.13 16.48 17.65
270.7646 -29.8286 11.6 -1 USNO-B1 16.23 13.08 14.48
270.7645 -29.8316 9.8 -1 USNO-B1 16.43 15.68 16.01
270.7638 -29.8339 14.3 -1 USNO-B1 18.88 17.70 18.22
270.7621 -29.8276 10.3 -1 USNO-B1 18.07 99.99 99.99
270.7616 -29.8284 7.5 -1 USNO-B1 14.76 12.23 13.36
270.7606 -29.8292 5.5 -1 USNO-B1 16.34 99.99 99.99
270.7600 -29.8316 6.7 -1 USNO-B1 17.96 16.05 16.90
270.7610 -29.8352 17.2 -1 USNO-B1 18.70 19.15 18.95
270.7603 -29.8346 15.4 -1 USNO-B1 17.63 99.99 99.99
270.7595 -29.8339 14.0 -1 USNO-B1 18.59 14.20 16.15
270.7590 -29.8263 16.9 -1 USNO-B1 18.83 14.33 16.33
270.7598 -29.8356 19.4 -1 USNO-B1 17.37 27.90 23.22
270.7581 -29.8259 19.6 -1 USNO-B1 20.64 99.99 99.99
270.7566 -29.8283 17.6 -1 USNO-B1 16.24 12.17 13.98
270.7560 -29.8287 18.7 -1 USNO-B1 16.51 12.92 14.51
270.7558 -29.8297 18.4 -1 USNO-B1 17.94 15.56 16.62
uvot_check_outside found 14 of 14 good pixels
##### This source remains a candidate #####
It has no entries within 3.5" or brighter than 12 mag
-----------------
Entry 1 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.75606 (18:03:01.45) dec=-29.83016 (-29:49:48.6) +/- 0.6" mag=17.32+/-0.14
dist=9.2 REFID=40 major=1.1 minor=0.8 flag=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
270.7616 -29.8284 18.3 -1 USNO-B1 14.76 12.23 13.36
270.7606 -29.8292 14.6 -1 USNO-B1 16.34 99.99 99.99
270.7600 -29.8316 13.3 -1 USNO-B1 17.96 16.05 16.90
270.7595 -29.8339 17.0 -1 USNO-B1 18.59 14.20 16.15
270.7590 -29.8263 16.6 -1 USNO-B1 18.83 14.33 16.33
270.7581 -29.8259 16.6 -1 USNO-B1 20.64 99.99 99.99
270.7566 -29.8283 7.0 -1 USNO-B1 16.24 12.17 13.98
270.7560 -29.8287 5.1 -1 USNO-B1 16.51 12.92 14.51
270.7558 -29.8297 1.9 -1 USNO-B1 17.94 15.56 16.62 *
270.7552 -29.8321 7.5 -1 USNO-B1 17.44 99.99 99.99
270.7558 -29.8342 14.6 -1 USNO-B1 19.60 16.77 18.03
270.7558 -29.8346 15.9 -1 USNO-B1 99.99 16.98 99.99
270.7554 -29.8334 11.8 -1 USNO-B1 16.98 16.51 16.72
270.7541 -29.8273 12.0 -1 USNO-B1 15.59 13.30 14.32
270.7534 -29.8307 8.5 -1 USNO-B1 20.18 19.38 19.74
270.7515 -29.8339 19.6 -1 USNO-B1 16.83 15.41 16.04
270.7506 -29.8305 17.1 -1 USNO-B1 18.59 16.32 17.33
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 3 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.76117 (18:03:02.68) dec=-29.82618 (-29:49:34.3) +/- 0.6" mag=17.48+/-0.15
dist=16.0 REFID=31 major=1.0 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 66.7 arc sec from the BAT position.
Found 12 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
270.7646 -29.8286 13.7 -1 USNO-B1 16.23 13.08 14.48
270.7621 -29.8276 5.9 -1 USNO-B1 18.07 99.99 99.99
270.7616 -29.8284 8.0 -1 USNO-B1 14.76 12.23 13.36
270.7606 -29.8292 11.0 -1 USNO-B1 16.34 99.99 99.99
270.7600 -29.8316 20.0 -1 USNO-B1 17.96 16.05 16.90
270.7629 -29.8236 10.8 -1 USNO-B1 17.48 17.05 17.24
270.7590 -29.8263 6.7 -1 USNO-B1 18.83 14.33 16.33
270.7581 -29.8259 9.5 -1 USNO-B1 20.64 99.99 99.99
270.7625 -29.8208 19.6 -1 USNO-B1 17.39 14.89 16.00
270.7566 -29.8283 16.2 -1 USNO-B1 16.24 12.17 13.98
270.7560 -29.8287 18.6 -1 USNO-B1 16.51 12.92 14.51
270.7575 -29.8243 13.2 -1 USNO-B1 17.88 17.56 17.70
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 5 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.76346 (18:03:03.23) dec=-29.82649 (-29:49:35.4) +/- 0.6" mag=16.41+/-0.14
dist=19.3 REFID=32 major=1.2 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 73.7 arc sec from the BAT position.
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
270.7679 -29.8305 20.0 -1 USNO-B1 19.13 16.48 17.65
270.7646 -29.8286 8.3 -1 USNO-B1 16.23 13.08 14.48
270.7645 -29.8316 18.5 -1 USNO-B1 16.43 15.68 16.01
270.7683 -29.8245 16.7 -1 USNO-B1 16.55 99.99 99.99
270.7683 -29.8240 17.6 -1 USNO-B1 99.99 14.30 99.99
270.7621 -29.8276 5.9 -1 USNO-B1 18.07 99.99 99.99
270.7616 -29.8284 9.1 -1 USNO-B1 14.76 12.23 13.36
270.7606 -29.8292 13.2 -1 USNO-B1 16.34 99.99 99.99
270.7670 -29.8223 18.9 -1 USNO-B1 16.06 17.02 16.59
270.7669 -29.8221 19.3 -1 USNO-B1 17.39 15.33 16.24
270.7629 -29.8236 10.5 -1 USNO-B1 17.48 17.05 17.24
270.7590 -29.8263 13.9 -1 USNO-B1 18.83 14.33 16.33
270.7581 -29.8259 16.8 -1 USNO-B1 20.64 99.99 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 18 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.76851 (18:03:04.44) dec=-29.82104 (-29:49:15.7) +/- 0.6" mag=17.13+/-0.14
dist=44.4 REFID=23 major=1.1 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 83.5 arc sec from the BAT position.
Found 15 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
270.7706 -29.8261 19.3 -1 USNO-B1 18.05 99.99 99.99
270.7683 -29.8245 12.3 -1 USNO-B1 16.55 99.99 99.99
270.7683 -29.8240 10.7 -1 USNO-B1 99.99 14.30 99.99
270.7737 -29.8238 19.0 -1 USNO-B1 17.25 17.58 17.43
270.7712 -29.8222 9.3 -1 USNO-B1 15.32 13.37 14.24
270.7670 -29.8223 6.4 -1 USNO-B1 16.06 17.02 16.59
270.7669 -29.8221 6.1 -1 USNO-B1 17.39 15.33 16.24
270.7629 -29.8236 19.7 -1 USNO-B1 17.48 17.05 17.24
270.7660 -29.8211 7.9 -1 USNO-B1 15.27 14.40 14.79
270.7746 -29.8203 19.2 -1 USNO-B1 17.08 99.99 99.99
270.7698 -29.8193 7.3 -1 USNO-B1 17.93 15.25 16.44
270.7625 -29.8208 18.9 -1 USNO-B1 17.39 14.89 16.00
270.7640 -29.8176 18.9 -1 USNO-B1 16.30 14.31 15.19
270.7652 -29.8168 18.4 -1 USNO-B1 19.14 13.88 16.22
270.7702 -29.8157 19.9 -1 USNO-B1 17.70 16.14 16.83
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 20 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.74440 (18:02:58.66) dec=-29.82814 (-29:49:41.3) +/- 0.6" mag=15.57+/-0.14
dist=46.2 REFID=35 major=1.1 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 37.3 arc sec from the BAT position.
Found 11 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
270.7478 -29.8295 11.6 -1 USNO-B1 17.30 17.34 17.33
270.7464 -29.8260 9.8 -1 USNO-B1 14.38 14.35 14.36
270.7442 -29.8299 6.3 -1 USNO-B1 15.71 15.13 15.39
270.7435 -29.8241 14.8 -1 USNO-B1 16.25 17.79 17.11
270.7423 -29.8305 10.8 -1 USNO-B1 17.17 19.59 18.52
270.7423 -29.8300 9.5 -1 USNO-B1 21.02 99.99 99.99
270.7423 -29.8333 19.8 -1 USNO-B1 17.84 25.80 22.27
270.7416 -29.8245 15.6 -1 USNO-B1 16.56 16.32 16.43
270.7401 -29.8266 14.6 -1 USNO-B1 99.99 19.34 99.99
270.7394 -29.8252 18.8 -1 USNO-B1 18.27 16.84 17.47
270.7387 -29.8299 18.9 -1 USNO-B1 99.99 15.35 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 22 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.77551 (18:03:06.12) dec=-29.83213 (-29:49:55.7) +/- 0.6" mag=15.53+/-0.14
dist=52.0 REFID=42 major=1.1 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 116.4 arc sec from the BAT position.
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
270.7706 -29.8296 17.8 -1 USNO-B1 16.80 19.44 18.27
270.7725 -29.8317 9.6 -1 USNO-B1 18.56 16.09 17.19
270.7706 -29.8331 15.6 -1 USNO-B1 19.16 16.79 17.84
270.7704 -29.8335 16.7 -1 USNO-B1 18.72 15.52 16.94
270.7737 -29.8300 9.5 -1 USNO-B1 18.10 99.99 99.99
270.7716 -29.8340 13.9 -1 USNO-B1 15.87 15.71 15.78
270.7752 -29.8298 8.5 -1 USNO-B1 18.56 11.80 14.80 *
270.7743 -29.8271 18.7 -1 USNO-B1 16.03 13.44 14.59
270.7757 -29.8303 6.7 -1 USNO-B1 14.47 14.16 14.30
270.7757 -29.8314 2.5 -1 USNO-B1 15.39 12.90 14.01 *
270.7768 -29.8314 4.9 -1 USNO-B1 16.43 99.99 99.99
270.7729 -29.8360 16.2 -1 USNO-B1 18.23 99.99 99.99
270.7770 -29.8341 8.6 -1 USNO-B1 17.33 99.99 99.99
270.7781 -29.8275 18.4 -1 USNO-B1 16.63 17.12 16.90
270.7761 -29.8360 14.0 -1 USNO-B1 17.34 15.78 16.47
270.7807 -29.8326 16.4 -1 USNO-B1 17.29 16.80 17.02
270.7813 -29.8318 18.2 -1 USNO-B1 17.78 15.40 16.46
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.77349 (18:03:05.64) dec=-29.81993 (-29:49:11.8) +/- 0.6" mag=16.49+/-0.14
dist=58.4 REFID=20 major=1.2 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 98.6 arc sec from the BAT position.
Found 9 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
270.7737 -29.8238 13.9 -1 USNO-B1 17.25 17.58 17.43
270.7712 -29.8222 10.7 -1 USNO-B1 15.32 13.37 14.24
270.7778 -29.8237 19.2 -1 USNO-B1 18.71 18.71 18.71
270.7746 -29.8203 3.8 -1 USNO-B1 17.08 99.99 99.99
270.7698 -29.8193 11.8 -1 USNO-B1 17.93 15.25 16.44
270.7760 -29.8187 9.0 -1 USNO-B1 17.61 17.33 17.45
270.7740 -29.8171 10.4 -1 USNO-B1 16.91 15.40 16.07
270.7702 -29.8157 18.4 -1 USNO-B1 17.70 16.14 16.83
270.7712 -29.8154 17.8 -1 USNO-B1 16.63 16.28 16.44
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 31 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.76065 (18:03:02.56) dec=-29.81262 (-29:48:45.4) +/- 0.6" mag=17.48+/-0.15
dist=63.5 REFID=9 major=1.0 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 61.4 arc sec from the BAT position.
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
270.7609 -29.8171 16.1 -1 USNO-B1 18.42 17.74 18.04
270.7583 -29.8171 17.7 -1 USNO-B1 19.11 99.99 99.99
270.7594 -29.8151 9.6 -1 USNO-B1 20.02 19.89 19.95
270.7570 -29.8164 17.8 -1 USNO-B1 18.67 15.38 16.84
270.7644 -29.8131 11.8 -1 USNO-B1 17.88 15.54 16.58
270.7573 -29.8159 15.8 -1 USNO-B1 17.37 99.99 99.99
270.7641 -29.8128 10.8 -1 USNO-B1 15.47 13.66 14.46
270.7658 -29.8123 16.0 -1 USNO-B1 99.99 17.70 99.99
270.7603 -29.8122 1.8 -1 USNO-B1 16.94 15.92 16.37 *
270.7640 -29.8105 13.0 -1 USNO-B1 16.30 15.30 15.74
270.7636 -29.8096 14.1 -1 USNO-B1 16.44 99.99 99.99
270.7610 -29.8098 10.2 -1 USNO-B1 13.85 15.37 14.70
270.7628 -29.8093 13.9 -1 USNO-B1 99.99 13.78 99.99
270.7624 -29.8091 13.7 -1 USNO-B1 99.99 12.65 99.99
270.7564 -29.8106 15.1 -1 USNO-B1 99.99 13.81 99.99
270.7553 -29.8105 18.3 -1 USNO-B1 16.83 13.68 15.08
270.7565 -29.8099 16.3 -1 USNO-B1 11.31 13.16 12.34 *
270.7610 -29.8079 17.0 -1 USNO-B1 17.89 99.99 99.99
270.7557 -29.8098 18.6 -1 USNO-B1 99.99 12.52 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 42 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.76169 (18:03:02.81) dec=-29.80906 (-29:48:32.6) +/- 0.6" mag=17.79+/-0.15
dist=76.6 REFID=5 major=1.4 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 69.4 arc sec from the BAT position.
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
270.7644 -29.8131 16.8 -1 USNO-B1 17.88 15.54 16.58
270.7641 -29.8128 15.3 -1 USNO-B1 15.47 13.66 14.46
270.7658 -29.8123 17.3 -1 USNO-B1 99.99 17.70 99.99
270.7603 -29.8122 12.1 -1 USNO-B1 16.94 15.92 16.37
270.7640 -29.8105 8.9 -1 USNO-B1 16.30 15.30 15.74
270.7677 -29.8096 18.8 -1 USNO-B1 16.34 17.15 16.79
270.7636 -29.8096 6.2 -1 USNO-B1 16.44 99.99 99.99
270.7610 -29.8098 3.4 -1 USNO-B1 13.85 15.37 14.70 *
270.7628 -29.8093 3.6 -1 USNO-B1 99.99 13.78 99.99
270.7624 -29.8091 2.2 -1 USNO-B1 99.99 12.65 99.99 *
270.7564 -29.8106 17.5 -1 USNO-B1 99.99 13.81 99.99
270.7677 -29.8073 19.7 -1 USNO-B1 17.06 13.94 15.33
270.7565 -29.8099 16.5 -1 USNO-B1 11.31 13.16 12.34 *
270.7610 -29.8079 4.7 -1 USNO-B1 17.89 99.99 99.99
270.7557 -29.8098 18.9 -1 USNO-B1 99.99 12.52 99.99
270.7654 -29.8062 15.4 -1 USNO-B1 18.45 16.16 17.18
270.7573 -29.8077 14.4 -1 USNO-B1 19.40 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 43 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.77217 (18:03:05.32) dec=-29.81104 (-29:48:39.7) +/- 0.6" mag=17.09+/-0.14
dist=80.3 REFID=7 major=1.4 minor=0.8 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 97.5 arc sec from the BAT position.
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
270.7702 -29.8157 17.9 -1 USNO-B1 17.70 16.14 16.83
270.7712 -29.8154 16.1 -1 USNO-B1 16.63 16.28 16.44
270.7679 -29.8148 19.2 -1 USNO-B1 99.99 14.27 99.99
270.7745 -29.8142 13.3 -1 USNO-B1 16.91 15.26 15.99
270.7745 -29.8134 11.2 -1 USNO-B1 17.36 15.41 16.28
270.7698 -29.8125 9.0 -1 USNO-B1 14.51 14.38 14.44
270.7744 -29.8129 9.8 -1 USNO-B1 18.45 99.99 99.99
270.7703 -29.8124 7.7 -1 USNO-B1 99.99 14.07 99.99
270.7707 -29.8118 5.4 -1 USNO-B1 99.99 14.37 99.99
270.7762 -29.8126 13.8 -1 USNO-B1 15.78 13.79 14.67
270.7731 -29.8113 3.1 -1 USNO-B1 15.79 14.71 15.19 *
270.7677 -29.8096 14.9 -1 USNO-B1 16.34 17.15 16.79
270.7701 -29.8079 12.8 -1 USNO-B1 17.46 99.99 99.99
270.7777 -29.8090 18.7 -1 USNO-B1 16.53 99.99 99.99
270.7677 -29.8073 19.3 -1 USNO-B1 17.06 13.94 15.33
270.7713 -29.8070 14.8 -1 USNO-B1 17.02 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 45 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.77490 (18:03:05.98) dec=-29.84802 (-29:50:52.9) +/- 0.6" mag=15.72+/-0.14
dist=81.1 REFID=61 major=1.2 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 149.1 arc sec from the BAT position.
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
270.7733 -29.8429 18.9 -1 USNO-B1 13.35 99.99 99.99
270.7741 -29.8437 15.7 -1 USNO-B1 16.52 99.99 99.99
270.7712 -29.8443 17.8 -1 USNO-B1 16.22 11.80 13.76 *
270.7699 -29.8446 19.9 -1 USNO-B1 15.27 12.44 13.70
270.7700 -29.8460 16.8 -1 USNO-B1 16.89 16.02 16.41
270.7782 -29.8460 12.8 -1 USNO-B1 16.81 16.14 16.44
270.7796 -29.8460 16.3 -1 USNO-B1 17.01 18.35 17.76
270.7772 -29.8473 7.5 -1 USNO-B1 18.02 13.82 15.68
270.7742 -29.8481 2.3 -1 USNO-B1 15.29 13.63 14.36 *
270.7778 -29.8473 9.5 -1 USNO-B1 16.52 99.99 99.99
270.7786 -29.8473 11.9 -1 USNO-B1 17.63 99.99 99.99
270.7807 -29.8464 19.0 -1 USNO-B1 20.02 18.99 19.45
270.7738 -29.8489 4.5 -1 USNO-B1 17.84 99.99 99.99
270.7701 -29.8499 16.5 -1 USNO-B1 15.41 14.49 14.90
270.7735 -29.8522 15.7 -1 USNO-B1 19.69 99.99 99.99
270.7724 -29.8531 19.8 -1 USNO-B1 16.87 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 47 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.78055 (18:03:07.33) dec=-29.81591 (-29:48:57.3) +/- 0.6" mag=17.96+/-0.15
dist=84.7 REFID=14 major=1.2 minor=1.1 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 120.6 arc sec from the BAT position.
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
270.7760 -29.8187 17.4 -1 USNO-B1 17.61 17.33 17.45
270.7822 -29.8208 18.3 -1 USNO-B1 18.21 17.29 17.70
270.7831 -29.8210 20.0 -1 USNO-B1 99.99 15.06 99.99
270.7819 -29.8197 14.3 -1 USNO-B1 18.04 15.88 16.84
270.7796 -29.8173 5.7 -1 USNO-B1 19.23 19.04 19.13
270.7779 -29.8156 8.5 -1 USNO-B1 19.52 18.46 18.93
270.7841 -29.8196 17.4 -1 USNO-B1 17.73 99.99 99.99
270.7787 -29.8156 6.0 -1 USNO-B1 15.33 17.47 16.52
270.7831 -29.8184 11.9 -1 USNO-B1 15.32 15.26 15.29
270.7801 -29.8154 2.3 -1 USNO-B1 16.11 15.58 15.81 *
270.7805 -29.8152 2.7 -1 USNO-B1 16.00 16.20 16.11 *
270.7831 -29.8169 8.7 -1 USNO-B1 16.90 17.66 17.32
270.7762 -29.8126 18.0 -1 USNO-B1 15.78 13.79 14.67
270.7825 -29.8155 6.4 -1 USNO-B1 17.56 99.99 99.99
270.7811 -29.8135 8.9 -1 USNO-B1 15.98 15.09 15.49
270.7831 -29.8146 9.2 -1 USNO-B1 17.16 99.99 99.99
270.7865 -29.8163 18.6 -1 USNO-B1 14.91 14.98 14.95
270.7836 -29.8137 12.4 -1 USNO-B1 16.16 15.37 15.72
270.7790 -29.8111 18.1 -1 USNO-B1 15.04 14.80 14.90
270.7868 -29.8154 19.7 -1 USNO-B1 14.98 13.03 13.90
270.7797 -29.8110 17.8 -1 USNO-B1 16.08 99.99 99.99
270.7790 -29.8106 19.9 -1 USNO-B1 15.73 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 3.5" or brighter than 12 mag
-----------------
Entry 52 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.76980 (18:03:04.75) dec=-29.80574 (-29:48:20.7) +/- 0.6" mag=17.18+/-0.14
dist=94.3 REFID=3 major=0.9 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 97.4 arc sec from the BAT position.
This source is near the edge of image (0.963)
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
270.7677 -29.8096 15.3 -1 USNO-B1 16.34 17.15 16.79
270.7701 -29.8079 8.0 -1 USNO-B1 17.46 99.99 99.99
270.7677 -29.8073 8.8 -1 USNO-B1 17.06 13.94 15.33
270.7713 -29.8070 6.6 -1 USNO-B1 17.02 99.99 99.99
270.7654 -29.8062 14.0 -1 USNO-B1 18.45 16.16 17.18
270.7759 -29.8063 19.1 -1 USNO-B1 16.03 99.99 99.99
270.7702 -29.8056 1.4 -1 USNO-B1 16.91 13.29 14.89 *
270.7680 -29.8049 6.3 -1 USNO-B1 16.04 15.02 15.47
270.7756 -29.8053 18.1 -1 USNO-B1 13.84 10.51 11.99 *
270.7699 -29.8047 3.8 -1 USNO-B1 16.48 14.58 15.42 *
270.7751 -29.8049 16.9 -1 USNO-B1 14.33 11.15 12.56 *
270.7705 -29.8026 11.5 -1 USNO-B1 17.79 16.77 17.22
270.7662 -29.8020 17.5 -1 USNO-B1 14.87 17.12 16.12
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
-----------------
Entry 57 in the list of sources is a candidate afterglow for 1046414_g480 with genie
ra=270.78921 (18:03:09.41) dec=-29.82222 (-29:49:20.0) +/- 0.6" mag=17.49+/-0.15
dist=98.6 REFID=24 major=1.2 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 148.2 arc sec from the BAT position.
Found 15 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
270.7846 -29.8249 17.3 -1 USNO-B1 18.16 18.74 18.49
270.7854 -29.8263 18.8 -1 USNO-B1 16.73 20.03 18.56
270.7831 -29.8210 19.7 -1 USNO-B1 99.99 15.06 99.99
270.7871 -29.8259 14.9 -1 USNO-B1 18.51 18.62 18.57
270.7841 -29.8196 18.4 -1 USNO-B1 17.73 99.99 99.99
270.7867 -29.8224 8.0 -1 USNO-B1 18.76 19.92 19.40
270.7891 -29.8276 19.2 -1 USNO-B1 16.32 16.12 16.21
270.7880 -29.8230 4.8 -1 USNO-B1 17.65 99.99 99.99
270.7895 -29.8243 7.5 -1 USNO-B1 18.83 14.91 16.65
270.7901 -29.8244 8.1 -1 USNO-B1 14.76 13.21 13.90
270.7901 -29.8198 9.2 -1 USNO-B1 18.33 17.02 17.60
270.7916 -29.8193 12.8 -1 USNO-B1 17.15 15.10 16.01
270.7921 -29.8188 15.1 -1 USNO-B1 17.07 14.56 15.68
270.7948 -29.8205 18.5 -1 USNO-B1 18.33 14.28 16.08
270.7950 -29.8205 19.2 -1 USNO-B1 99.99 12.26 99.99
*** If XRT position is correct, then this is NOT the afterglow
Found 2 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
270.7606 -29.8292 6.2 -1 USNO-B1 16.34 99.99 99.99
270.7600 -29.8316 6.0 -1 USNO-B1 17.96 16.05 16.90
The closest star is 5.98" away.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=270.76162 (18:03:02.79) dec=-29.83046 (-29:49:49.6) +/- 0.6" mag=15.82+/-0.14 dist=8.2 REFID=39 flag=0
Unmatched source ra=270.75606 (18:03:01.45) dec=-29.83016 (-29:49:48.6) +/- 0.6" mag=17.32+/-0.14 dist=9.2 REFID=40 flag=0
There are 2.0213747E+05 counts in the bkg source region of 4640.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 43.564 counts/pixel (5-sig UL in 4" is 19.30 mag) for 1046414_g480
There are 5194.8389 counts in the src source region of 50.000000 pixels.
Rate in src region with 4 arcsec radius is 103.897 counts/pixel for 1046414_g480
There are 40163.621 counts in the cand_src_bkg source region of 940.00000 pixels.
Rate in cand_src_bkg region from 15 to 25 arcsec is 42.727 counts/pixel (5-sig UL in 4" is 19.31 mag) for 1046414_g480
There are 6 candidate(s) outside XRT error circle with mag < 19.30
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.86, XRT distances < 14.75",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
Region file: 1046414_641670454_210502d17h58m53s247772usUT_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(270.7667,-29.8303,45")
fk5;-circle(270.761619824516,-29.8304576760459,6")
fk5;-circle(270.75605997416,-29.8301626332954,6")
fk5;-circle(270.756791892019,-29.8280241886531,6")
fk5;-circle(270.761165335618,-29.8261829569733,6")
fk5;-circle(270.764657238217,-29.8288479983523,6")
fk5;-circle(270.763464306919,-29.8264877272474,6")
fk5;-circle(270.753579264383,-29.8271114458046,6")
fk5;-circle(270.751560616163,-29.8339969730932,6")
fk5;-circle(270.75902634532,-29.8389969847331,6")
fk5;-circle(270.768311594579,-29.824351432611,6")
fk5;-circle(270.765690133385,-29.8209857728131,6")
fk5;-circle(270.758195942302,-29.8416567587052,6")
fk5;-circle(270.76850984621,-29.8210404370686,6")
fk5;-circle(270.772537735188,-29.8260869540491,6")
fk5;-circle(270.775505170954,-29.8321298307541,6")
fk5;-circle(270.775907217693,-29.8364076176219,6")
fk5;-circle(270.776712337272,-29.834504337209,6")
fk5;-circle(270.773492684227,-29.8199345770179,6")
fk5;-circle(270.76879594899,-29.8439521588068,6")
fk5;-circle(270.772478012024,-29.8425366808896,6")
fk5;-circle(270.777074716469,-29.8406696114074,6")
fk5;-circle(270.781572071126,-29.8261265337328,6")
Region file: 1046414_641670454_210502d17h58m53s247772usUT_cand_src.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(270.761619824516,-29.8304576760459,4")
Region file: 1046414_641670454_210502d17h58m53s247772usUT_cand_bkg.region
# Region file format: DS9 version 3.0
global color=red font="helvetica 10 normal" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source
fk5;circle(270.761619824516,-29.8304576760459,25")
fk5;-circle(270.761619824516,-29.8304576760459,15")
fk5;-circle(270.75605997416,-29.8301626332954,6")
fk5;-circle(270.756791892019,-29.8280241886531,6")
fk5;-circle(270.761165335618,-29.8261829569733,6")
fk5;-circle(270.764657238217,-29.8288479983523,6")
fk5;-circle(270.763464306919,-29.8264877272474,6")
fk5;-circle(270.753579264383,-29.8271114458046,6")
fk5;-circle(270.768311594579,-29.824351432611,6")
Region file: /Home/eud/uvot_tdrss/swift/uvot_gcn/src_1046414_XRT.reg
# Region file format: DS9 version 3.0
# find_uvot_ag.pl vrs. 2020-10-30 fem XRT
global font="helvetica 12 bold" select=1 edit=1 move=1 delete=1 include=1 fixed=0 source=1
fk5;circle(270.7590,-29.8302,5.9") # color=red dash=0
point(270.76140,-29.83103) # point=diamond 10 color=red width=2
image paragraph message for exposure 1 of trigger 1046414
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB210502 (Swift/BAT trigger 1046414) at 17:39:33 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 454 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:03:02.79 = 270.76162
DEC(J2000) = -29:49:49.7 = -29.83046
with a 90%-confidence error radius of about 0.61 arc sec. This position is 8.2
arc sec. from the center of the XRT error circle. The estimated magnitude is
15.82 with a 1-sigma error of about 0.14. No correction has been made for the
large, but uncertain, extinction expected.
------- notes for trigger 1046414 ------
uvot_gcn_auto.pl vrs. 2020-10-27 fem at 210502d17h58m57s673110usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1046414
-expid=641670454 -msg_image
Results from standard processing of UVOT TDRSS data for this trigger should be
available at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/1046414/
Links to data for all triggers can be found at
http://heasarc.gsfc.nasa.gov/docs/swift/uvot_tdrss/
Unreliable extinction found for bat position. Unreliable extinction found for
xrt position. XRT position found for Genie image. BAT position found.
UVOT exposure began at MET 641670454.75792 or about 2021:122:17:47:29 UT
No information found about the number of stars in the star catalog for srclist
region.
Found 64 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. Found 18 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
19.86 mag. Found 986 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 98% of the Genie image region.
This paragraph is only useful if the XRT position is grossly wrong. There are 6
candidate(s) in the image data with mag < 19.30 inside the BAT error region,
but outside the XRT error region. The brightest such source is at RA=270.74440
(18:02:58.66), DEC=-29.82814 (-29:49:41.3) (J2000). It has a mag of 15.57. It
is 37.3" from the BAT position.
****THIS SOURCE IS OUTSIDE XRT ERROR CIRCLE--USE WITH CAUTION***
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 454 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 18:02:58.66 = 270.74440
DEC(J2000) = -29:49:41.3 = -29.82814
with a 90%-confidence error radius of about 0.61 arc sec. The estimated
magnitude is 15.57 with a 1-sigma error of about 0.14. No correction has been
made for the large, but uncertain, extinction expected.
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?
641670454 454 WHITE srclist data are not available.
641670454 454 WHITE 270.76162 -29.83046 15.82/19.9 8.2 image Yes
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: -29.83046
GRB_ERROR: 0.61
GRB_RA: 270.76162
IMAGE_START_TIME: 17:47:29
MAGNITUDE: 15.82
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT