srclist overlap message for exposure 1 of trigger 1351790
uvot_overlap.pl vrs. 2010-12-20b fem started at 250924d21h36m40s123592usUT
The observation of trigger 1351790 started 2025-09-24T08:22:18.4
Examining file ./1351790_g228_uvot_sky_srclist.fits
The exposure ID is 780394938
The exposure time is undefined.
The filter is WHITE.
The uvot region is centered at (51.8879,74.6588) with a roll angle of 51.6
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 (51.8650,74.6520) with a radius of 3.000 arc min
This is 0.544 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 (51.8724,74.6585) with a radius of 0.037 arc min
This is 0.247 arc min from the center of the uvot region
The area of the XRT error circle is 0.004 sq. arc min
The UVOT/XRT overlap is 0.004 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 1 of trigger 1351790
find_uvot_ag.pl vrs. 2023-04-25a fem started at 250924d21h36m44s651745usUT
Observation start time is 2025-09-24T08:22:18.4
Examining file ./1351790_g228_uvot_catalog_srclist.fits
The exposure ID is 780394938
The exposure is 149.857 sec.
The bin size is 2 pixels
The filter is WHITE
There are 127 detected source(s) for 1351790_g228
Aspect correction adds 0.00559 degrees (1.341 sec of time = 5.32 arc sec) to RA
Aspect correction adds 0.00029 degrees ( 1.04 arcsec) to Dec
Total aspect correction is 5.42 arcsec
Star catalogs centered at 51.9079 , 74.6577 with radius 6.62 arc min.
n_usno: 629 n_gsc: 683
*** WARNING -- bright star catalog has 2 entries brighter than 12 mag
The brightest has mag 11.623
RA DEC Mag Color
bright star 0: 51.84171 (03:27:22.01) 74.62269 (+74:37:21.7) 11.83 GSC-V
bright star 1: 52.02092 (03:28:05.02) 74.71181 (+74:42:42.5) 11.62 GSC-V
Mean distance difference (CAT_DELTA) for 109 matched entries is 0.755" for 1351790_g228
Mean and std. dev of mag. difference (MAG_DELTA) are 1.363 and 0.661 for 1351790_g228
Found 21 entries without IDs and 11 entries that are acceptable afterglow candidates for 1351790_g228.
Acceptable entries have no ID, XRT distances < 5.5", 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=51.8650 (03:27:27.60) DEC=74.6520 (+74:39:07.2)
XRT distances are from RA=51.8724 (03:27:29.37) DEC=74.6585 (+74:39:30.5)
-----------------
Entry 0 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.87355 (03:27:29.65) dec=74.65937 (+74:39:33.7) +/- 1.1" mag=18.33+/-0.35
dist=3.4 REFID=41
src: 0 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
51.8840 74.6637 18.5 -1 USNO-B1 18.83 16.93 17.77
51.8843 74.6636 18.4 -1 GSC2.3 17.12 18.75 17.64
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 17 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.94013 (03:27:45.63) dec=74.66177 (+74:39:42.4) +/- 1.1" mag=20.07+/-0.35
dist=65.6 REFID=121
*** The position of this source is inconsistent with the XRT position.
The position is 79.7 arc sec from the BAT position.
src: 17 distr. of nearby unmatched sources: 0 2 1 0 2
Found 4 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
51.9422 74.6648 10.9 -1 USNO-B1 16.77 15.64 16.14
51.9540 74.6646 16.8 -1 USNO-B1 12.27 11.84 12.03 *
51.9232 74.6649 19.7 -1 GSC2.3 19.56 21.81 99.99
51.9540 74.6646 16.8 -1 GSC2.3 99.99 99.99 12.05 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 18 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.94226 (03:27:46.14) dec=74.66332 (+74:39:48.0) +/- 1.1" mag=19.81+/-0.35
dist=68.8 REFID=99
*** The position of this source is inconsistent with the XRT position.
The position is 84.1 arc sec from the BAT position.
src: 18 distr. of nearby unmatched sources: 0 3 0 0 2
Found 5 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
51.9227 74.6650 19.6 -1 USNO-B1 99.99 19.27 99.99
51.9422 74.6648 5.2 -1 USNO-B1 16.77 15.64 16.14
51.9540 74.6646 12.2 -1 USNO-B1 12.27 11.84 12.03 *
51.9232 74.6649 19.0 -1 GSC2.3 19.56 21.81 99.99
51.9540 74.6646 12.2 -1 GSC2.3 99.99 99.99 12.05 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 19 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.94665 (03:27:47.20) dec=74.66196 (+74:39:43.1) +/- 1.1" mag=20.36+/-0.35
dist=71.8 REFID=127
*** The position of this source is inconsistent with the XRT position.
The position is 85.7 arc sec from the BAT position.
src: 19 distr. of nearby unmatched sources: 0 2 1 2 0
Found 3 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
51.9422 74.6648 10.9 -1 USNO-B1 16.77 15.64 16.14
51.9540 74.6646 11.9 -1 USNO-B1 12.27 11.84 12.03 *
51.9540 74.6646 11.9 -1 GSC2.3 99.99 99.99 12.05 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 25 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.91559 (03:27:39.74) dec=74.63813 (+74:38:17.3) +/- 1.1" mag=19.36+/-0.35
dist=84.0 REFID=88
*** The position of this source is inconsistent with the XRT position.
The position is 69.4 arc sec from the BAT position.
src: 25 distr. of nearby unmatched sources: 0 0 0 0 0
Found 2 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
51.9173 74.6391 4.0 -1 USNO-B1 16.62 15.10 15.77
51.9175 74.6391 3.9 -1 GSC2.3 15.03 16.34 15.60 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 31 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.96412 (03:27:51.39) dec=74.66324 (+74:39:47.7) +/- 1.1" mag=19.90+/-0.35
dist=89.0 REFID=101
*** The position of this source is inconsistent with the XRT position.
The position is 102.7 arc sec from the BAT position.
src: 31 distr. of nearby unmatched sources: 0 1 0 1 2
Found 4 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
51.9540 74.6646 10.9 -1 USNO-B1 12.27 11.84 12.03 *
51.9682 74.6676 16.3 -1 USNO-B1 16.21 14.76 15.40
51.9540 74.6646 10.9 -1 GSC2.3 99.99 99.99 12.05 *
51.9685 74.6676 16.1 -1 GSC2.3 14.66 15.76 15.04
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 32 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.96310 (03:27:51.14) dec=74.66491 (+74:39:53.7) +/- 1.1" mag=19.72+/-0.35
dist=89.4 REFID=95
*** The position of this source is inconsistent with the XRT position.
The position is 104.4 arc sec from the BAT position.
src: 32 distr. of nearby unmatched sources: 0 1 0 1 2
Found 5 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
51.9422 74.6648 19.9 -1 USNO-B1 16.77 15.64 16.14
51.9540 74.6646 8.7 -1 USNO-B1 12.27 11.84 12.03 *
51.9682 74.6676 11.0 -1 USNO-B1 16.21 14.76 15.40
51.9540 74.6646 8.7 -1 GSC2.3 99.99 99.99 12.05 *
51.9685 74.6676 10.9 -1 GSC2.3 14.66 15.76 15.04
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 62 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.82781 (03:27:18.67) dec=74.61756 (+74:37:03.2) +/- 1.1" mag=20.31+/-0.35
dist=153.3 REFID=124
*** The position of this source is inconsistent with the XRT position.
The position is 129.0 arc sec from the BAT position.
src: 62 distr. of nearby unmatched sources: 0 0 0 2 0
Found 7 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
51.8418 74.6216 19.8 -1 USNO-B1 99.99 13.93 99.99
51.8420 74.6200 16.2 -1 USNO-B1 99.99 17.39 99.99
51.8428 74.6188 15.0 -1 USNO-B1 20.83 18.09 19.31
51.8096 74.6193 18.6 -1 USNO-B1 21.28 19.28 20.17
51.8186 74.6167 9.3 -1 USNO-B1 21.19 19.09 20.03
51.8100 74.6193 18.0 -1 GSC2.3 19.43 21.24 99.99
51.8189 74.6166 9.2 -1 GSC2.3 18.94 21.19 99.99
*** If XRT position is correct, then this is NOT the afterglow
-----------------
Entry 70 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.79894 (03:27:11.75) dec=74.61177 (+74:36:42.4) +/- 1.1" mag=20.10+/-0.35
dist=182.2 REFID=119
*** The position of this source is inconsistent with the XRT position.
The position is 157.9 arc sec from the BAT position.
src: 70 distr. of nearby unmatched sources: 0 0 0 0 0
Found 3 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
51.7908 74.6109 8.4 -1 USNO-B1 14.49 13.16 13.75
51.8087 74.6145 13.6 -1 GSC2.3 20.39 99.99 99.99
51.7909 74.6108 8.4 -1 GSC2.3 12.77 13.75 13.09 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 81 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.72266 (03:26:53.44) dec=74.62123 (+74:37:16.4) +/- 1.1" mag=19.02+/-0.35
dist=196.0 REFID=79
*** The position of this source is inconsistent with the XRT position.
The position is 175.2 arc sec from the BAT position.
src: 81 srclist_match has ID
src: 81 distr. of nearby unmatched sources: 2 1 0 0 0
Found 6 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
51.7225 74.6228 5.7 -1 USNO-B1 16.91 14.73 15.70
51.7233 74.6219 2.4 -1 USNO-B1 17.30 16.10 16.63 *
51.7229 74.6183 10.7 -1 USNO-B1 99.99 18.87 99.99
51.7225 74.6230 6.5 -1 GSC2.3 15.48 17.08 15.18
51.7239 74.6214 1.4 -1 GSC2.3 16.94 18.24 99.99 *
51.7241 74.6178 12.3 -1 GSC2.3 19.82 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 82 in the list of sources is a candidate afterglow for 1351790_g228 with 3x3 stamp
ra=51.72402 (03:26:53.76) dec=74.62082 (+74:37:15.0) +/- 1.1" mag=19.72+/-0.35
dist=196.0 REFID=114
*** The position of this source is inconsistent with the XRT position.
The position is 175.2 arc sec from the BAT position.
src: 82 distr. of nearby unmatched sources: 1 1 0 0 0
Found 6 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
51.7225 74.6228 7.3 -1 USNO-B1 16.91 14.73 15.70
51.7233 74.6219 3.9 -1 USNO-B1 17.30 16.10 16.63 *
51.7229 74.6183 9.3 -1 USNO-B1 99.99 18.87 99.99
51.7225 74.6230 8.1 -1 GSC2.3 15.48 17.08 15.18
51.7239 74.6214 2.2 -1 GSC2.3 16.94 18.24 99.99 *
51.7241 74.6178 10.8 -1 GSC2.3 19.82 99.99 99.99
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
Found 0 entries in star catalog(s) within 10" of the XRT position.
List UVOT sources within 10" of the XRT position:
Unmatched source ra=51.87355 (03:27:29.65) dec=74.65937 (+74:39:33.7) +/- 1.1" mag=18.33+/-0.35 dist=3.4 REFID=41
Good candidates have no ID, acceptable profiles,
mag between 9.01 and 19.22, XRT distances < 5.5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 1 good candidate(s) found.
srclist paragraph message for exposure 1 of trigger 1351790
------ Start for Possible Stand-alone Circular ----
In response to GRB250924 (Swift/BAT trigger 1351790) at 08:18:29 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 192 seconds after the BAT trigger. There is a candidate afterglow in
the rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 03:27:29.62 = 51.87340
DEC(J2000) = +74:39:34.0 = 74.65945
with a 90%-confidence error radius of about 0.62 arc sec. This position is 3.7
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.74 with a 1-sigma error of about 0.14. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.316.
------- notes for trigger 1351790 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 250924d21h36m48s800314usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1351790
-expid=780394938 -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/1351790/
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 780394938.3878 or about 2025:268:08:22:13 UT
Found 668 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 10% of the srclist region. Found 127 sources in
srclist catalog. Found 21 srclist source(s) without IDs. There are 1 good
candidate(s) in the srclist catalog. Good candidates must be brighter than
19.22 mag.
Found 31 source(s) in Genie image catalog. 1 source(s) are within 10.0" of the
xrt position. Found 5 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.90 mag. Found 143 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 12% of the Genie image region.
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?
780394938 192 WHITE 51.87355 74.65937 18.33/19.2 3.4 srclist Yes
780394938 192 WHITE 51.87340 74.65945 17.74/20.9 3.7 image Yes
List afterglow candidates for other finding charts.
780395096 350 U 51.87258 74.65915 18.79/18.1 0.3 srclist Yes
780395096 350 U 51.87351 74.65943 18.03/20.6 1.6 image Yes
780395604 858 WHITE srclist found no candidates.
780395604 858 WHITE 51.87320 74.65940 19.44/20.4 1.3 image Yes
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: white
GRB_DEC: 74.65945
GRB_ERROR: 0.62
GRB_RA: 51.87340
IMAGE_START_TIME: 08:22:13
MAGNITUDE: 17.74
MAG_ERROR: 0.14
MESSAGE_TYPE: ACK
SOURCE: XRT