image overlap message for exposure 1 of trigger 1310284
uvot_overlap.pl vrs. 2010-12-20b fem started at 250505d07h34m05s412284usUT
The observation of trigger 1310284 started 2025-05-04T23:28:50.4
Examining file ./1310284_g172_uvot_sky_image.fits
The exposure ID is 768094130
The exposure time is 249.935 (seconds)
The filter is U.
The uvot region is centered at (269.6205,-40.3510) with a roll angle of 106.4
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 (269.6120,-40.3490) with a radius of 3.000 arc min
This is 0.406 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 7.17 sq. arc min or 0.25 of the BAT error circle
The XRT error circle is centered at (269.6181,-40.3668) with a radius of 0.067 arc min
This is 0.950 arc min from the center of the uvot region
The area of the XRT error circle is 0.014 sq. arc min
The UVOT/XRT overlap is 0.014 sq. arc min or 1.00 of the XRT error circle
image afterglow message for exposure 1 of trigger 1310284
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250505d07h34m11s544574usUT
Observation start time is 2025-05-04T23:28:50.4
Examining file ./1310284_g172_uvot_catalog_image.fits
The exposure ID is 768094130
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 63 detected source(s) for 1310284_g172
Aspect correction adds 0.00067 degrees (0.161 sec of time = 1.84 arc sec) to RA
Aspect correction adds -0.00116 degrees (-4.19 arcsec) to Dec
Total aspect correction is 4.57 arcsec
Star catalogs centered at 269.6222 , -40.3502 with radius 2.77 arc min.
n_usno: 1168 n_gsc: 530
*** WARNING -- bright star catalog has 3 entries brighter than 12 mag
The brightest has mag 11.0765
RA DEC Mag Color
bright star 0: 269.57392 (17:58:17.74) -40.35876 (-40:21:31.5) 11.74 USNO-V
bright star 1: 269.61319 (17:58:27.16) -40.38889 (-40:23:20.0) 11.08 USNO-V
bright star 2: 269.62766 (17:58:30.64) -40.34142 (-40:20:29.1) 11.84 GSC-V
Mean distance difference (CAT_DELTA) for 55 matched entries is 0.817" for 1310284_g172
Mean and std. dev of mag. difference (MAG_DELTA) are 2.152 and 0.838 for 1310284_g172
Found 12 entries without IDs and 10 entries that are acceptable afterglow candidates for 1310284_g172.
Acceptable entries have no ID, XRT distances < 10", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
2 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=269.6120 (17:58:26.88) DEC=-40.3490 (-40:20:56.4)
XRT distances are from RA=269.6181 (17:58:28.34) DEC=-40.3668 (-40:22:00.3)
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.61249 (17:58:27.00) dec=-40.34345 (-40:20:36.4) +/- 0.6" mag=16.87+/-0.15
dist=85.3 REFID=21 major=1.0 minor=0.9 flag=3 (neighbor+blended)
*** The position of this source is inconsistent with the XRT position.
The position is 20.0 arc sec from the BAT position.
Found 21 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
269.6181 -40.3464 18.9 -1 USNO-B1 17.79 17.25 17.49
269.6163 -40.3464 14.9 -1 USNO-B1 16.74 16.56 16.64
269.6162 -40.3457 13.2 -1 USNO-B1 16.82 16.59 16.69
269.6139 -40.3473 14.3 -1 USNO-B1 99.99 17.83 99.99
269.6131 -40.3486 18.5 -1 USNO-B1 16.55 16.56 16.56
269.6116 -40.3454 7.6 -1 USNO-B1 18.52 19.65 19.15
269.6163 -40.3419 11.9 -1 USNO-B1 16.67 17.54 17.15
269.6142 -40.3427 5.4 -1 USNO-B1 15.04 14.46 14.72
269.6167 -40.3399 17.2 -1 USNO-B1 16.98 17.20 17.10
269.6098 -40.3438 7.5 -1 USNO-B1 17.43 17.54 17.49
269.6073 -40.3441 14.4 -1 USNO-B1 18.06 20.23 19.27
269.6103 -40.3409 11.1 -1 USNO-B1 18.71 22.08 20.58
269.6089 -40.3415 12.0 -1 USNO-B1 18.30 20.24 19.38
269.6113 -40.3388 16.9 -1 USNO-B1 17.47 18.73 18.17
269.6160 -40.3465 14.5 -1 GSC2.3 17.08 99.99 17.66
269.6158 -40.3454 11.6 -1 GSC2.3 17.42 99.99 17.72
269.6126 -40.3487 18.8 -1 GSC2.3 16.60 99.99 17.02
269.6142 -40.3426 5.6 -1 GSC2.3 14.58 15.98 15.07
269.6165 -40.3414 13.2 -1 GSC2.3 17.33 99.99 99.99
269.6122 -40.3434 0.9 -1 GSC2.3 15.89 16.54 16.32 *
269.6166 -40.3399 17.2 -1 GSC2.3 17.01 99.99 17.52
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 5 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.61982 (17:58:28.76) dec=-40.34471 (-40:20:40.9) +/- 0.6" mag=17.22+/-0.15
dist=79.5 REFID=25 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 26.4 arc sec from the BAT position.
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
269.6237 -40.3484 17.1 -1 USNO-B1 16.83 17.50 17.21
269.6248 -40.3481 18.3 -1 USNO-B1 17.60 17.95 17.80
269.6262 -40.3469 19.3 -1 USNO-B1 17.68 18.66 18.22
269.6181 -40.3464 7.7 -1 USNO-B1 17.79 17.25 17.49
269.6201 -40.3448 1.0 -1 USNO-B1 99.99 15.17 99.99 *
269.6151 -40.3488 19.7 -1 USNO-B1 99.99 15.07 99.99
269.6163 -40.3464 11.6 -1 USNO-B1 16.74 16.56 16.64
269.6228 -40.3442 8.3 -1 USNO-B1 15.80 15.16 15.44
269.6162 -40.3457 10.5 -1 USNO-B1 16.82 16.59 16.69
269.6139 -40.3473 18.7 -1 USNO-B1 99.99 17.83 99.99
269.6163 -40.3419 14.0 -1 USNO-B1 16.67 17.54 17.15
269.6142 -40.3427 17.1 -1 USNO-B1 15.04 14.46 14.72
269.6200 -40.3394 19.1 -1 USNO-B1 15.25 14.81 15.01
269.6167 -40.3399 19.4 -1 USNO-B1 16.98 17.20 17.10
269.6197 -40.3447 0.5 -1 GSC2.3 15.21 16.99 15.85 *
269.6225 -40.3443 7.5 -1 GSC2.3 15.64 17.13 16.21
269.6160 -40.3465 12.4 -1 GSC2.3 17.08 99.99 17.66
269.6158 -40.3454 11.2 -1 GSC2.3 17.42 99.99 17.72
269.6260 -40.3432 17.9 -1 GSC2.3 15.29 16.82 99.99
269.6219 -40.3405 16.2 -1 GSC2.3 99.99 99.99 99.99
269.6142 -40.3426 17.2 -1 GSC2.3 14.58 15.98 15.07
269.6165 -40.3414 15.0 -1 GSC2.3 17.33 99.99 99.99
269.6205 -40.3399 17.6 -1 GSC2.3 14.60 16.76 15.69
269.6166 -40.3399 19.6 -1 GSC2.3 17.01 99.99 17.52
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 14 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.62053 (17:58:28.93) dec=-40.33983 (-40:20:23.4) +/- 0.7" mag=18.10+/-0.16
dist=97.1 REFID=16 major=1.0 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 40.5 arc sec from the BAT position.
Found 23 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
269.6201 -40.3448 18.0 -1 USNO-B1 99.99 15.17 99.99
269.6228 -40.3442 17.1 -1 USNO-B1 15.80 15.16 15.44
269.6272 -40.3416 19.4 -1 USNO-B1 14.56 11.28 12.74 *
269.6163 -40.3419 13.7 -1 USNO-B1 16.67 17.54 17.15
269.6248 -40.3405 12.0 -1 USNO-B1 16.47 17.17 16.86
269.6200 -40.3394 2.0 -1 USNO-B1 15.25 14.81 15.01 *
269.6244 -40.3394 10.6 -1 USNO-B1 16.24 15.00 15.55
269.6167 -40.3399 10.6 -1 USNO-B1 16.98 17.20 17.10
269.6251 -40.3380 14.2 -1 USNO-B1 16.95 16.59 16.75
269.6197 -40.3361 13.5 -1 USNO-B1 14.45 14.10 14.26
269.6177 -40.3363 14.9 -1 USNO-B1 99.99 15.78 99.99
269.6224 -40.3351 17.8 -1 USNO-B1 17.32 18.59 18.03
269.6197 -40.3447 17.6 -1 GSC2.3 15.21 16.99 15.85
269.6225 -40.3443 17.1 -1 GSC2.3 15.64 17.13 16.21
269.6260 -40.3432 19.4 -1 GSC2.3 15.29 16.82 99.99
269.6219 -40.3405 4.5 -1 GSC2.3 99.99 99.99 99.99
269.6165 -40.3414 12.5 -1 GSC2.3 17.33 99.99 99.99
269.6205 -40.3399 0.2 -1 GSC2.3 14.60 16.76 15.69 *
269.6166 -40.3399 10.8 -1 GSC2.3 17.01 99.99 17.52
269.6240 -40.3391 10.0 -1 GSC2.3 15.21 17.53 16.10
269.6252 -40.3377 14.8 -1 GSC2.3 16.85 99.99 17.24
269.6171 -40.3363 15.8 -1 GSC2.3 16.33 17.65 16.93
269.6198 -40.3358 14.7 -1 GSC2.3 14.60 15.74 15.64
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 39 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.63419 (17:58:32.20) dec=-40.36004 (-40:21:36.1) +/- 0.6" mag=17.11+/-0.15
dist=50.4 REFID=50 major=0.9 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 72.7 arc sec from the BAT position.
Found 25 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
269.6286 -40.3581 16.9 -1 USNO-B1 17.53 18.44 18.03
269.6308 -40.3570 14.3 -1 USNO-B1 19.34 21.53 20.56
269.6349 -40.3549 18.4 -1 USNO-B1 99.99 14.42 99.99
269.6328 -40.3575 9.9 -1 USNO-B1 16.95 17.45 17.23
269.6319 -40.3582 9.0 -1 USNO-B1 18.14 18.74 18.47
269.6283 -40.3617 17.3 -1 USNO-B1 15.90 15.70 15.79
269.6364 -40.3582 8.8 -1 USNO-B1 16.43 15.80 16.08
269.6360 -40.3587 7.0 -1 USNO-B1 16.07 16.05 16.06
269.6349 -40.3597 2.4 -1 USNO-B1 15.79 15.23 15.48 *
269.6297 -40.3631 16.5 -1 USNO-B1 17.01 17.14 17.08
269.6305 -40.3633 15.3 -1 USNO-B1 16.92 17.90 17.46
269.6366 -40.3611 7.6 -1 USNO-B1 17.10 18.76 18.02
269.6313 -40.3642 16.8 -1 USNO-B1 18.53 17.87 18.16
269.6398 -40.3591 15.7 -1 USNO-B1 17.53 18.14 17.87
269.6343 -40.3637 13.2 -1 USNO-B1 17.06 17.68 17.40
269.6350 -40.3636 13.0 -1 USNO-B1 16.66 16.37 16.50
269.6404 -40.3608 17.4 -1 USNO-B1 16.74 17.08 16.93
269.6405 -40.3611 17.7 -1 USNO-B1 18.45 16.84 17.55
269.6377 -40.3642 17.8 -1 USNO-B1 16.81 17.09 16.97
269.6377 -40.3647 19.4 -1 USNO-B1 16.68 16.84 16.77
269.6349 -40.3551 17.8 -1 GSC2.3 14.56 16.29 15.34
269.6281 -40.3615 17.5 -1 GSC2.3 16.64 17.34 17.21
269.6341 -40.3599 0.6 -1 GSC2.3 15.60 17.00 16.06 *
269.6369 -40.3578 11.0 -1 GSC2.3 16.65 17.69 16.89
269.6347 -40.3634 12.1 -1 GSC2.3 16.70 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 1310284_g172 with genie
ra=269.63711 (17:58:32.91) dec=-40.35782 (-40:21:28.1) +/- 0.9" mag=19.70+/-0.27
dist=61.3 REFID=47 major=0.9 minor=0.7 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 75.9 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
269.6308 -40.3570 17.7 -1 USNO-B1 19.34 21.53 20.56
269.6346 -40.3541 15.1 -1 USNO-B1 15.55 14.00 14.69
269.6349 -40.3549 12.0 -1 USNO-B1 99.99 14.42 99.99
269.6328 -40.3575 11.9 -1 USNO-B1 16.95 17.45 17.23
269.6319 -40.3582 14.3 -1 USNO-B1 18.14 18.74 18.47
269.6374 -40.3529 17.6 -1 USNO-B1 17.34 17.98 17.69
269.6364 -40.3582 2.5 -1 USNO-B1 16.43 15.80 16.08 *
269.6360 -40.3587 4.3 -1 USNO-B1 16.07 16.05 16.06
269.6349 -40.3597 9.0 -1 USNO-B1 15.79 15.23 15.48
269.6408 -40.3540 17.2 -1 USNO-B1 17.76 19.25 18.59
269.6366 -40.3611 11.7 -1 USNO-B1 17.10 18.76 18.02
269.6398 -40.3591 8.8 -1 USNO-B1 17.53 18.14 17.87
269.6432 -40.3572 17.0 -1 USNO-B1 17.36 17.78 17.59
269.6404 -40.3608 14.2 -1 USNO-B1 16.74 17.08 16.93
269.6420 -40.3593 14.5 -1 USNO-B1 18.48 20.98 19.87
269.6405 -40.3611 15.0 -1 USNO-B1 18.45 16.84 17.55
269.6440 -40.3564 19.6 -1 USNO-B1 17.49 17.91 17.73
269.6344 -40.3535 17.3 -1 GSC2.3 15.33 17.42 15.95
269.6349 -40.3551 11.5 -1 GSC2.3 14.56 16.29 15.34
269.6373 -40.3529 17.6 -1 GSC2.3 17.36 99.99 99.99
269.6341 -40.3599 11.2 -1 GSC2.3 15.60 17.00 16.06
269.6369 -40.3578 0.6 -1 GSC2.3 16.65 17.69 16.89 *
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 1310284_g172 with genie
ra=269.58356 (17:58:20.06) dec=-40.35180 (-40:21:06.5) +/- 0.6" mag=17.44+/-0.15
dist=108.9 REFID=37 major=1.0 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 78.7 arc sec from the BAT position.
This source is near the edge of image (0.943)
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
269.5881 -40.3495 14.9 -1 USNO-B1 99.99 21.60 99.99
269.5879 -40.3518 11.9 -1 USNO-B1 19.39 27.06 23.65
269.5867 -40.3513 8.8 -1 USNO-B1 17.90 18.49 18.23
269.5875 -40.3562 19.0 -1 USNO-B1 17.59 18.59 18.15
269.5871 -40.3563 19.0 -1 USNO-B1 17.16 18.47 17.89
269.5862 -40.3485 14.0 -1 USNO-B1 17.03 17.76 17.43
269.5856 -40.3527 6.4 -1 USNO-B1 99.99 15.81 99.99
269.5857 -40.3559 15.7 -1 USNO-B1 18.12 22.45 20.53
269.5850 -40.3522 4.2 -1 USNO-B1 15.19 15.18 15.18 *
269.5840 -40.3494 8.7 -1 USNO-B1 18.30 21.60 20.14
269.5828 -40.3571 19.3 -1 USNO-B1 16.42 18.67 17.67
269.5815 -40.3480 14.8 -1 USNO-B1 18.63 18.96 18.81
269.5816 -40.3465 19.7 -1 USNO-B1 99.99 18.11 99.99
269.5807 -40.3542 11.5 -1 USNO-B1 17.03 16.33 16.64
269.5802 -40.3533 10.6 -1 USNO-B1 99.99 15.58 99.99
269.5798 -40.3535 12.1 -1 USNO-B1 15.33 14.37 14.80
269.5791 -40.3479 18.6 -1 USNO-B1 17.59 20.56 19.24
269.5776 -40.3495 18.4 -1 USNO-B1 18.06 25.98 22.46
269.5854 -40.3528 6.1 -1 GSC2.3 16.06 17.95 99.99
269.5837 -40.3518 0.5 -1 GSC2.3 15.50 16.80 15.82 *
269.5793 -40.3536 13.3 -1 GSC2.3 14.97 16.77 15.55
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 51 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.63328 (17:58:31.99) dec=-40.33047 (-40:19:49.7) +/- 0.6" mag=16.39+/-0.14
dist=137.1 REFID=6 major=0.9 minor=0.9 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 88.6 arc sec from the BAT position.
This source is near the edge of image (0.934)
Found 28 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
269.6284 -40.3343 19.2 -1 USNO-B1 17.78 18.95 18.43
269.6323 -40.3340 13.1 -1 USNO-B1 13.92 12.46 13.11
269.6301 -40.3324 11.1 -1 USNO-B1 16.63 16.19 16.38
269.6288 -40.3317 13.0 -1 USNO-B1 17.12 16.77 16.92
269.6372 -40.3341 17.0 -1 USNO-B1 16.43 17.24 16.88
269.6310 -40.3316 7.5 -1 USNO-B1 15.85 13.64 14.62
269.6378 -40.3335 16.5 -1 USNO-B1 17.23 18.46 17.91
269.6390 -40.3337 19.6 -1 USNO-B1 18.27 19.68 19.05
269.6268 -40.3296 17.9 -1 USNO-B1 16.58 16.61 16.60
269.6386 -40.3321 15.6 -1 USNO-B1 16.97 17.41 17.21
269.6352 -40.3298 5.7 -1 USNO-B1 15.96 14.19 14.98
269.6335 -40.3292 4.5 -1 USNO-B1 15.77 15.36 15.54 *
269.6296 -40.3282 13.1 -1 USNO-B1 14.90 14.59 14.72
269.6299 -40.3280 12.7 -1 USNO-B1 99.99 17.41 99.99
269.6381 -40.3296 13.6 -1 USNO-B1 18.99 18.76 18.86
269.6361 -40.3285 10.7 -1 USNO-B1 15.72 15.43 15.56
269.6386 -40.3292 15.3 -1 USNO-B1 17.24 17.23 17.24
269.6344 -40.3272 12.2 -1 USNO-B1 16.58 17.05 16.84
269.6316 -40.3253 19.3 -1 USNO-B1 99.99 19.54 99.99
269.6324 -40.3341 13.1 -1 GSC2.3 12.54 14.41 13.05
269.6299 -40.3324 11.7 -1 GSC2.3 16.86 99.99 17.30
269.6304 -40.3309 8.1 -1 GSC2.3 14.72 17.12 15.98
269.6268 -40.3296 18.1 -1 GSC2.3 16.81 99.99 99.99
269.6331 -40.3304 0.6 -1 GSC2.3 14.27 16.08 14.98 *
269.6384 -40.3321 15.3 -1 GSC2.3 17.14 99.99 17.58
269.6293 -40.3282 13.8 -1 GSC2.3 15.03 16.05 16.23
269.6335 -40.3289 5.8 -1 GSC2.3 99.99 18.06 99.99
269.6361 -40.3285 10.5 -1 GSC2.3 15.74 16.99 16.52
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 59 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.64573 (17:58:34.98) dec=-40.35721 (-40:21:26.0) +/- 0.7" mag=18.30+/-0.16
dist=83.3 REFID=43 major=0.9 minor=0.8 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 97.1 arc sec from the BAT position.
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
269.6408 -40.3540 17.8 -1 USNO-B1 17.76 19.25 18.59
269.6398 -40.3591 17.7 -1 USNO-B1 17.53 18.14 17.87
269.6445 -40.3541 11.7 -1 USNO-B1 17.23 17.48 17.37
269.6432 -40.3572 6.8 -1 USNO-B1 17.36 17.78 17.59
269.6404 -40.3608 19.5 -1 USNO-B1 16.74 17.08 16.93
269.6420 -40.3593 12.7 -1 USNO-B1 18.48 20.98 19.87
269.6440 -40.3564 5.6 -1 USNO-B1 17.49 17.91 17.73
269.6456 -40.3536 12.9 -1 USNO-B1 16.92 16.91 16.92
269.6452 -40.3585 4.8 -1 USNO-B1 99.99 16.23 99.99
269.6469 -40.3555 6.9 -1 USNO-B1 17.17 18.27 17.78
269.6452 -40.3589 6.3 -1 USNO-B1 16.64 18.01 17.40
269.6490 -40.3536 15.6 -1 USNO-B1 17.46 18.45 18.01
269.6442 -40.3625 19.4 -1 USNO-B1 16.23 16.02 16.11
269.6487 -40.3589 10.2 -1 USNO-B1 15.04 14.21 14.58
269.6510 -40.3546 17.1 -1 USNO-B1 17.78 20.60 19.35
269.6482 -40.3622 19.2 -1 USNO-B1 18.14 19.70 19.01
269.6509 -40.3596 16.7 -1 USNO-B1 17.32 18.27 17.85
269.6455 -40.3535 13.4 -1 GSC2.3 17.26 99.99 99.99
269.6455 -40.3573 0.6 -1 GSC2.3 15.93 17.16 16.41 *
269.6440 -40.3624 19.3 -1 GSC2.3 16.38 17.49 16.66
269.6486 -40.3588 9.6 -1 GSC2.3 13.95 15.81 14.56
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 65 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.65625 (17:58:37.50) dec=-40.35400 (-40:21:14.4) +/- 0.6" mag=16.41+/-0.14
dist=114.3 REFID=38 major=1.1 minor=1.0 flag=0
*** The position of this source is inconsistent with the XRT position.
The position is 122.7 arc sec from the BAT position.
This source is near the edge of image (0.953)
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
269.6510 -40.3546 14.7 -1 USNO-B1 17.78 20.60 19.35
269.6534 -40.3532 8.5 -1 USNO-B1 17.76 19.19 18.56
269.6533 -40.3550 8.7 -1 USNO-B1 99.99 16.35 99.99
269.6549 -40.3551 5.3 -1 USNO-B1 17.37 17.55 17.47
269.6557 -40.3539 1.5 -1 USNO-B1 15.18 14.36 14.72 *
269.6561 -40.3526 4.9 -1 USNO-B1 99.99 18.09 99.99 *
269.6560 -40.3587 17.1 -1 USNO-B1 18.23 18.63 18.45
269.6580 -40.3583 16.2 -1 USNO-B1 17.43 17.47 17.45
269.6598 -40.3501 17.0 -1 USNO-B1 18.30 20.01 19.25
269.6604 -40.3528 12.3 -1 USNO-B1 14.22 13.18 13.64
269.6604 -40.3563 14.1 -1 USNO-B1 13.92 13.18 13.51
269.6621 -40.3529 16.5 -1 USNO-B1 17.21 16.65 16.90
269.6531 -40.3548 9.1 -1 GSC2.3 16.84 18.01 17.11
269.6559 -40.3538 1.1 -1 GSC2.3 14.42 15.91 15.36 *
269.6602 -40.3531 11.2 -1 GSC2.3 13.87 15.39 14.98
269.6610 -40.3511 16.6 -1 GSC2.3 15.51 17.35 16.23
269.6604 -40.3564 14.1 -1 GSC2.3 13.02 14.49 13.57
269.6629 -40.3530 18.6 -1 GSC2.3 16.92 99.99 99.99
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 66 in the list of sources is a candidate afterglow for 1310284_g172 with genie
ra=269.66081 (17:58:38.59) dec=-40.35103 (-40:21:03.7) +/- 0.8" mag=19.06+/-0.20
dist=130.2 REFID=36 major=0.7 minor=0.3 flag=16 (aperture_incomplete)
*** The position of this source is inconsistent with the XRT position.
The position is 134.1 arc sec from the BAT position.
This source is near the edge of image (0.969)
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
269.6557 -40.3539 17.3 -1 USNO-B1 15.18 14.36 14.72
269.6562 -40.3482 16.4 -1 USNO-B1 99.99 36.55 99.99
269.6561 -40.3526 14.1 -1 USNO-B1 99.99 18.09 99.99
269.6598 -40.3501 4.2 -1 USNO-B1 18.30 20.01 19.25 *
269.6604 -40.3528 6.5 -1 USNO-B1 14.22 13.18 13.64
269.6604 -40.3563 19.0 -1 USNO-B1 13.92 13.18 13.51
269.6621 -40.3529 7.7 -1 USNO-B1 17.21 16.65 16.90
269.6628 -40.3478 12.9 -1 USNO-B1 17.32 17.09 17.19
269.6631 -40.3511 6.4 -1 USNO-B1 16.35 15.68 15.98
269.6639 -40.3468 17.5 -1 USNO-B1 16.06 15.69 15.85
269.6650 -40.3478 16.3 -1 USNO-B1 17.71 18.20 17.98
269.6665 -40.3528 16.9 -1 USNO-B1 15.43 15.37 15.39
269.6673 -40.3534 19.7 -1 USNO-B1 16.48 16.16 16.30
269.6559 -40.3538 16.7 -1 GSC2.3 14.42 15.91 15.36
269.6602 -40.3531 7.5 -1 GSC2.3 13.87 15.39 14.98
269.6610 -40.3511 0.7 -1 GSC2.3 15.51 17.35 16.23 *
269.6604 -40.3564 19.2 -1 GSC2.3 13.02 14.49 13.57
269.6626 -40.3480 12.1 -1 GSC2.3 17.23 99.99 17.63
269.6629 -40.3530 9.1 -1 GSC2.3 16.92 99.99 99.99
269.6633 -40.3511 6.8 -1 GSC2.3 15.96 17.66 16.52
269.6638 -40.3465 18.3 -1 GSC2.3 15.99 17.30 16.39
269.6659 -40.3529 15.5 -1 GSC2.3 16.47 17.65 16.89
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 5.25" or brighter than 12 mag
Found 1 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
269.6179 -40.3658 3.3 -1 USNO-B1 16.96 17.79 17.42
The closest star is 3.31" away.
List UVOT sources within 10" of the XRT position:
There are 27456.463 counts in the bkg source region of 4486.0000 pixels.
Rate in bkg region from 0 to 45 arcsec is 6.120 counts/pixel (5-sig UL in 4" is 19.48 mag) for 1310284_g172
There are 1274.6879 counts in the xrt source region of 203.00000 pixels.
Rate in xrt region with 8 arcsec radius is 6.279 counts/pixel for 1310284_g172
XRT source is too far (57.0873974218452") from center -- do not compute local background.
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 20.04, XRT distances < 10",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
Region file: 1310284_768094130_250505d07h34m11s544574usUT_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(269.6205,-40.3510,45")
fk5;-circle(269.612863580111,-40.3486713004614,6")
fk5;-circle(269.615347903335,-40.348990483867,6")
fk5;-circle(269.612489847777,-40.3434481414641,6")
fk5;-circle(269.61901459483,-40.3512152233948,6")
fk5;-circle(269.614299160227,-40.3426745515954,6")
fk5;-circle(269.619821459071,-40.3447050598144,6")
fk5;-circle(269.616696831172,-40.3554688284033,6")
fk5;-circle(269.615530451116,-40.3578375062158,6")
fk5;-circle(269.622565285251,-40.344353533132,6")
fk5;-circle(269.607484319626,-40.3580779144501,6")
fk5;-circle(269.616850059009,-40.3397948448759,6")
fk5;-circle(269.614642420235,-40.3596158678422,6")
fk5;-circle(269.620525649897,-40.339828937732,6")
fk5;-circle(269.617365752933,-40.3603143620081,6")
fk5;-circle(269.628453129973,-40.3500077044818,6")
fk5;-circle(269.627818201804,-40.3414422730438,6")
fk5;-circle(269.625388237991,-40.3376982654748,6")
fk5;-circle(269.622000894635,-40.3625296358349,6")
fk5;-circle(269.628350588575,-40.3616462761337,6")
fk5;-circle(269.634650992282,-40.3535517377277,6")
fk5;-circle(269.635164980122,-40.3550560156805,6")
fk5;-circle(269.634185816117,-40.360037383122,6")
Region file: 1310284_768094130_250505d07h34m11s544574usUT_xrt.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(269.61808,-40.36675,8")
image paragraph message for exposure 1 of trigger 1310284
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: srclist filled telemetry buffer
See notes for more details.
------ Start for Possible Stand-alone Circular ----
In response to GRB250504 (Swift/BAT trigger 1310284) at 23:25:57 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
137 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 0.00% of the XRT
error circle. No correction has been made for the expected extinction
corresponding to E(B-V) of 0.191.
------- notes for trigger 1310284 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250505d07h34m20s350203usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1310284
-expid=768094130 -meonly -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/1310284/
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 768094130.42556 or about 2025:125:23:28:45 UT
Found 5000 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 56% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 53 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
Found 63 source(s) in Genie image catalog. Found 12 Genie image source(s)
without IDs. There are 0 good candidate(s) in the Genie image catalog. Good
candidates must be brighter than 20.04 mag. Found 1164 stars in largest star
catalog for Genie image region. The stars will eliminate afterglows from about
105% of the Genie image region.
Genie image analysis:
Found 27456.5 counts in the large background region of 4486.0 pixels or a rate
of 6.120 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 19.28 mag. for a
4-arcsec aperture.
Found 1274.7 counts in the XRT position region of 203.0 pixels or a rate of
6.279 counts/pixel in a radius of 8.0 arcsec. The net count rate (using large
background region) at the XRT position is 0.129 +/- 0.146 (1-sigma) cps or
20.36 mag and a range from 19.54 to 99.99 mag. The 3-sigma UL at the XRT
position is 0.567 cps or 18.75 mag. The number of srclist sources filled the
available telemetry. The weakest source detected was 17.83 mag. The closest
srclist source has ra= 269.6341 dec= -40.3600 mag=17.45 sep=50.26". The closest
Genie source has ra= 269.6215 dec= -40.3706 mag=16.57 sep=16.90".
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?
768094130 136 U srclist found no candidates.
768094130 136 U image found no candidates.
List afterglow candidates for other finding charts.
------- Tokens for Quick GCN -------