srclist overlap message for exposure 2 of trigger 1442056
uvot_overlap.pl vrs. 2010-12-20b fem started at 260118d11h46m38s967283usUT
The observation of trigger 1442056 started 2026-01-18T11:43:06.4
Examining file 1442056_g911_uvot_sky_srclist.fits
The exposure ID is 790429386
The exposure time is undefined.
The filter is U.
The uvot region is centered at (170.2507,-61.9206) with a roll angle of 134.4
It is square with sides of 12.05 arc min. for an area of 145.15 sq arc min
The BAT error circle is centered at (170.2300,-61.9090) with a radius of 3.000 arc min
This is 0.908 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 (170.2386,-61.9161) with a radius of 0.085 arc min
This is 0.434 arc min from the center of the uvot region
The area of the XRT error circle is 0.023 sq. arc min
The UVOT/XRT overlap is 0.023 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 1442056
find_uvot_ag.pl vrs. 2023-04-25a fem started at 260118d11h46m40s236809usUT
Observation start time is 2026-01-18T11:43:06.4
Examining file 1442056_g911_uvot_catalog_srclist.fits
The exposure ID is 790429386
The exposure is 250.000 sec.
The bin size is 2 pixels
The filter is U
There are 190 detected source(s) for 1442056_g911
*** WARNING -- the sources have filled the available telemetry buffer (190).
srclist_overlap returned: bat_overlap 1.000
srclist_overlap returned: xrt_overlap 1.000
Dimmest detected source in 1442056_g911 has mag 18.30
Aspect correction adds 0.00075 degrees (0.179 sec of time = 1.27 arc sec) to RA
Aspect correction adds -0.00099 degrees (-3.55 arcsec) to Dec
Total aspect correction is 3.77 arcsec
Star catalogs centered at 170.2863 , -61.9162 with radius 8.08 arc min.
n_usno: 3688 n_gsc: 5068
*** WARNING -- bright star catalog has 34 entries brighter than 12 mag
The brightest has mag 8.22
RA DEC Mag Color
bright star 0: 170.30284 (11:21:12.68) -61.92093 (-61:55:15.4) 11.11 USNO-V
bright star 1: 170.23847 (11:20:57.23) -61.91621 (-61:54:58.3) 11.85 USNO-V
bright star 2: 170.19354 (11:20:46.45) -61.95970 (-61:57:34.9) 11.88 USNO-V
bright star 3: 170.13721 (11:20:32.93) -61.92166 (-61:55:18.0) 11.70 USNO-V
bright star 4: 170.18508 (11:20:44.42) -61.97381 (-61:58:25.7) 10.35 USNO-V
bright star 5: 170.44346 (11:21:46.43) -61.93583 (-61:56:09.0) 11.37 USNO-V
bright star 6: 170.42660 (11:21:42.38) -61.96172 (-61:57:42.2) 11.05 USNO-V
bright star 7: 170.16478 (11:20:39.55) -61.98206 (-61:58:55.4) 10.81 USNO-V
bright star 8: 170.44958 (11:21:47.90) -61.95998 (-61:57:35.9) 11.49 USNO-V
bright star 9: 170.11621 (11:20:27.89) -61.87689 (-61:52:36.8) 9.81 USNO-V
bright star 10: 170.15963 (11:20:38.31) -61.98588 (-61:59:09.2) 8.95 USNO-V
bright star 11: 170.32134 (11:21:17.12) -61.82640 (-61:49:35.1) 11.79 USNO-V
bright star 12: 170.15934 (11:20:38.24) -61.98756 (-61:59:15.2) 11.40 USNO-V
bright star 13: 170.15642 (11:20:37.54) -61.98761 (-61:59:15.4) 9.55 USNO-V
bright star 14: 170.46600 (11:21:51.84) -61.96013 (-61:57:36.5) 11.24 USNO-V
bright star 15: 170.23529 (11:20:56.47) -62.01040 (-62:00:37.4) 11.39 GSC-V
bright star 16: 170.07997 (11:20:19.19) -61.94581 (-61:56:44.9) 9.54 USNO-V
bright star 17: 170.23007 (11:20:55.22) -62.01569 (-62:00:56.5) 11.53 USNO-V
bright star 18: 170.16136 (11:20:38.73) -61.83078 (-61:49:50.8) 11.03 USNO-R
bright star 19: 170.51735 (11:22:04.16) -61.92836 (-61:55:42.1) 10.67 USNO-V
bright star 20: 170.52673 (11:22:06.42) -61.92407 (-61:55:26.6) 11.30 USNO-V
bright star 21: 170.42500 (11:21:42.00) -62.00925 (-62:00:33.3) 11.58 USNO-V
bright star 22: 170.52467 (11:22:05.92) -61.94620 (-61:56:46.3) 11.85 USNO-V
bright star 23: 170.04884 (11:20:11.72) -61.87153 (-61:52:17.5) 8.22 USNO-R
bright star 24: 170.54276 (11:22:10.26) -61.91027 (-61:54:37.0) 11.07 USNO-V
bright star 25: 170.48095 (11:21:55.43) -61.83131 (-61:49:52.7) 10.93 USNO-V
bright star 26: 170.31511 (11:21:15.63) -62.04107 (-62:02:27.8) 10.58 USNO-V
bright star 27: 170.41323 (11:21:39.18) -62.02696 (-62:01:37.0) 11.40 USNO-V
bright star 28: 170.34794 (11:21:23.51) -62.03996 (-62:02:23.8) 11.17 USNO-V
bright star 29: 170.54118 (11:22:09.88) -61.95998 (-61:57:35.9) 10.73 USNO-B
bright star 30: 170.16055 (11:20:38.53) -61.98492 (-61:59:05.7) 11.90 GSC-V
bright star 31: 170.44794 (11:21:47.50) -61.99522 (-61:59:42.8) 11.87 GSC-V
bright star 32: 170.30040 (11:21:12.10) -62.04092 (-62:02:27.3) 9.82 GSC-V
bright star 33: 170.36041 (11:21:26.50) -61.78644 (-61:47:11.2) 11.76 GSC-V
Mean distance difference (CAT_DELTA) for 144 matched entries is 0.872" for 1442056_g911
Mean and std. dev of mag. difference (MAG_DELTA) are 2.720 and 0.768 for 1442056_g911
Found 50 entries without IDs and 7 entries that are acceptable afterglow candidates for 1442056_g911.
Acceptable entries have no ID, XRT distances < 12.75", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
34 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=170.2300 (11:20:55.20) DEC=-61.9090 (-61:54:32.4)
XRT distances are from RA=170.2386 (11:20:57.26) DEC=-61.9161 (-61:54:58.0)
*** WARNING 26 per cent of entries have no IDs.
-----------------
Entry 2 in the list of sources is a candidate afterglow for 1442056_g911 with 1x1 stamp
ra=170.24372 (11:20:58.49) dec=-61.90966 (-61:54:34.8) +/- 1.1" mag=18.12+/-0.35
dist=24.8 REFID=189
*** The position of this source is inconsistent with the XRT position.
The position is 23.4 arc sec from the BAT position.
src: 2 srclist_match has ID
src: 2 distr. of nearby unmatched sources: 0 0 0 0 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
170.2507 -61.9135 18.1 -1 USNO-B1 99.99 16.59 99.99
170.2435 -61.9141 15.8 -1 USNO-B1 15.59 14.26 14.85
170.2488 -61.9056 17.0 -1 USNO-B1 17.83 16.98 17.35
170.2479 -61.9055 16.4 -1 USNO-B1 16.86 15.91 16.33
170.2428 -61.9098 1.6 -1 USNO-B1 15.74 14.77 15.20 *
170.2449 -61.9060 13.3 -1 USNO-B1 17.11 15.60 16.27
170.2389 -61.9122 12.2 -1 USNO-B1 16.09 15.00 15.49
170.2358 -61.9111 14.5 -1 USNO-B1 99.99 18.31 99.99
170.2336 -61.9106 17.4 -1 USNO-B1 16.56 15.86 16.17
170.2351 -61.9060 19.7 -1 USNO-B1 18.14 17.57 17.83
170.2325 -61.9085 19.5 -1 USNO-B1 18.87 17.34 18.02
170.2436 -61.9142 16.2 -1 GSC2.3 15.68 99.99 15.86
170.2477 -61.9053 17.0 -1 GSC2.3 17.11 99.99 17.41
170.2433 -61.9096 0.8 -1 GSC2.3 15.36 99.99 15.63 *
170.2443 -61.9060 13.3 -1 GSC2.3 16.30 99.99 17.05
170.2387 -61.9120 12.0 -1 GSC2.3 15.65 99.99 16.04
170.2332 -61.9105 18.1 -1 GSC2.3 16.32 99.99 16.92
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 21 in the list of sources is a candidate afterglow for 1442056_g911 with 1x1 stamp
ra=170.15856 (11:20:38.06) dec=-61.92101 (-61:55:15.6) +/- 1.1" mag=18.21+/-0.35
dist=136.8 REFID=162
*** The position of this source is inconsistent with the XRT position.
The position is 128.6 arc sec from the BAT position.
src: 21 srclist_match has ID
src: 21 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
170.1665 -61.9222 14.1 -1 USNO-B1 17.78 17.37 17.55
170.1624 -61.9195 8.5 -1 USNO-B1 16.95 15.16 15.95
170.1614 -61.9250 15.2 -1 USNO-B1 16.76 15.33 15.96
170.1597 -61.9205 2.5 -1 USNO-B1 16.77 14.75 15.64 *
170.1603 -61.9245 13.1 -1 USNO-B1 99.99 16.63 99.99
170.1542 -61.9168 16.9 -1 USNO-B1 18.62 17.77 18.15
170.1536 -61.9181 13.3 -1 USNO-B1 18.35 17.85 18.07
170.1663 -61.9221 13.6 -1 GSC2.3 99.99 99.99 99.99
170.1620 -61.9195 8.1 -1 GSC2.3 15.68 99.99 16.31
170.1614 -61.9251 15.6 -1 GSC2.3 16.36 99.99 16.89
170.1588 -61.9208 0.7 -1 GSC2.3 15.19 99.99 15.74 *
170.1538 -61.9169 16.9 -1 GSC2.3 99.99 99.99 99.99
170.1534 -61.9183 13.2 -1 GSC2.3 99.99 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 24 in the list of sources is a candidate afterglow for 1442056_g911 with 1x1 stamp
ra=170.23909 (11:20:57.38) dec=-61.87543 (-61:52:31.5) +/- 1.1" mag=17.54+/-0.35
dist=146.4 REFID=127
*** The position of this source is inconsistent with the XRT position.
The position is 121.8 arc sec from the BAT position.
src: 24 srclist_match has ID
src: 24 distr. of nearby unmatched sources: 0 0 0 0 0
Found 8 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
170.2365 -61.8789 13.2 -1 USNO-B1 18.71 18.38 18.53
170.2354 -61.8768 8.0 -1 USNO-B1 17.21 16.79 16.98
170.2386 -61.8748 2.3 -1 USNO-B1 99.99 13.91 99.99 *
170.2389 -61.8729 9.0 -1 USNO-B1 16.10 14.18 15.03
170.2349 -61.8767 8.5 -1 GSC2.3 17.18 99.99 99.99
170.2388 -61.8754 0.5 -1 GSC2.3 15.21 99.99 15.61 *
170.2367 -61.8741 6.2 -1 GSC2.3 16.32 99.99 16.76
170.2389 -61.8726 10.2 -1 GSC2.3 14.81 99.99 15.44
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 26 in the list of sources is a candidate afterglow for 1442056_g911 with 1x1 stamp
ra=170.22511 (11:20:54.03) dec=-61.87423 (-61:52:27.2) +/- 1.1" mag=17.45+/-0.35
dist=152.5 REFID=111
*** The position of this source is inconsistent with the XRT position.
The position is 125.4 arc sec from the BAT position.
src: 26 srclist_match has ID
src: 26 distr. of nearby unmatched sources: 0 0 0 0 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
170.2354 -61.8768 19.7 -1 USNO-B1 17.21 16.79 16.98
170.2212 -61.8765 10.6 -1 USNO-B1 17.67 15.98 16.73
170.2239 -61.8746 2.5 -1 USNO-B1 14.57 13.30 13.87 *
170.2349 -61.8767 18.9 -1 GSC2.3 17.18 99.99 99.99
170.2367 -61.8741 19.7 -1 GSC2.3 16.32 99.99 16.76
170.2219 -61.8756 7.4 -1 GSC2.3 15.45 99.99 15.96
170.2245 -61.8742 1.1 -1 GSC2.3 14.23 99.99 14.76 *
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 27 in the list of sources is a candidate afterglow for 1442056_g911 with 1x1 stamp
ra=170.28514 (11:21:08.43) dec=-61.87902 (-61:52:44.5) +/- 1.1" mag=17.76+/-0.35
dist=155.1 REFID=159
*** The position of this source is inconsistent with the XRT position.
The position is 142.8 arc sec from the BAT position.
src: 27 srclist_match has ID
src: 27 distr. of nearby unmatched sources: 0 0 0 0 0
Found 8 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
170.2788 -61.8830 18.0 -1 USNO-B1 17.34 16.87 17.08
170.2885 -61.8814 10.3 -1 USNO-B1 18.73 17.89 18.27
170.2846 -61.8799 3.3 -1 USNO-B1 14.89 13.34 14.03 *
170.2798 -61.8779 9.9 -1 USNO-B1 17.43 16.95 17.17
170.2786 -61.8831 18.2 -1 GSC2.3 99.99 99.99 99.99
170.2828 -61.8805 6.7 -1 GSC2.3 15.26 99.99 16.05
170.2853 -61.8795 1.7 -1 GSC2.3 14.66 99.99 15.14 *
170.2792 -61.8776 11.3 -1 GSC2.3 17.40 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 35 in the list of sources is a candidate afterglow for 1442056_g911 with 3x3 stamp
ra=170.31765 (11:21:16.24) dec=-61.88808 (-61:53:17.1) +/- 1.1" mag=17.10+/-0.35
dist=167.8 REFID=79
*** The position of this source is inconsistent with the XRT position.
The position is 166.6 arc sec from the BAT position.
src: 35 srclist_match has ID
src: 35 distr. of nearby unmatched sources: 0 0 0 0 0
Found 8 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
170.3120 -61.8895 11.0 -1 USNO-B1 18.43 18.70 18.58
170.3183 -61.8886 2.0 -1 USNO-B1 14.89 13.80 14.28 *
170.3252 -61.8896 13.9 -1 USNO-B1 17.78 17.18 17.45
170.3239 -61.8865 12.2 -1 USNO-B1 17.67 16.36 16.94
170.3178 -61.8883 0.9 -1 GSC2.3 14.03 99.99 14.46 *
170.3250 -61.8896 13.6 -1 GSC2.3 99.99 99.99 99.99
170.3124 -61.8846 15.5 -1 GSC2.3 99.99 99.99 99.99
170.3236 -61.8865 11.5 -1 GSC2.3 16.85 99.99 17.58
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 37 in the list of sources is a candidate afterglow for 1442056_g911 with 3x3 stamp
ra=170.25691 (11:21:01.66) dec=-61.96253 (-61:57:45.1) +/- 1.1" mag=17.01+/-0.35
dist=170.0 REFID=66
*** The position of this source is inconsistent with the XRT position.
The position is 198.0 arc sec from the BAT position.
src: 37 srclist_match has ID
src: 37 distr. of nearby unmatched sources: 0 0 0 0 0
Found 10 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
170.2639 -61.9617 12.2 -1 USNO-B1 18.28 17.35 17.76
170.2516 -61.9604 11.8 -1 USNO-B1 17.62 17.37 17.48
170.2581 -61.9628 2.1 -1 USNO-B1 14.55 13.52 13.97 *
170.2584 -61.9629 2.8 -1 USNO-B1 14.67 13.33 13.92 *
170.2639 -61.9639 12.8 -1 USNO-B1 15.20 14.43 14.77
170.2524 -61.9662 15.2 -1 USNO-B1 17.89 16.79 17.28
170.2514 -61.9603 12.2 -1 GSC2.3 99.99 99.99 99.99
170.2573 -61.9625 0.6 -1 GSC2.3 13.84 99.99 14.24 *
170.2635 -61.9640 12.3 -1 GSC2.3 15.06 99.99 15.44
170.2520 -61.9662 15.6 -1 GSC2.3 99.99 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 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
170.2385 -61.9162 0.4 -1 USNO-B1 12.61 11.24 11.85
170.2382 -61.9167 2.3 -1 GSC2.3 11.26 99.99 12.06
The closest star is 0.44" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=170.23875 (11:20:57.30) dec=-61.91672 (-61:55:00.2) +/- 1.1" mag=14.06+/-0.35 dist=2.2 REFID=6
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 18.12, XRT distances < 12.75",
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 2 of trigger 1442056
THIS MESSAGE IS *NOT* READY FOR DISTRIBUTION.
MORE ANALYSIS IS REQUIRED TO DETERMINE WHETHER THERE IS AN AFTERGLOW CANDIDATE.
IMAGE PROBLEM: no image afterglow info
SRCLIST PROBLEM: srclist filled telemetry buffer
See notes for more details.
WARNING -- because of the LARGE EXTINCTION, results should be used cautiously.
------ Start for Possible Stand-alone Circular ----
In response to GRB260118 (Swift/BAT trigger 1442056) at 11:27:54 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of nominal 250.000 seconds with the U filter
starting 874 seconds after the BAT trigger. No credible afterglow candidate has
been found in the initial data products. Data from the 2.7'x2.7' sub-image are
not available at this time. The 8'x8' region for the list of sources generated
on-board covers 100% of the XRT error circle. The list of sources is typically
complete to about 18.0 mag. No correction has been made for the large, but
uncertain, extinction expected.
------- notes for trigger 1442056 ------
uvot_gcn_auto.pl vrs. 2023-03-28 fem at 260118d11h46m44s267895usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=1442056
-expid=790429386 -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/1442056/
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.
*** Warning -- no exposure found, using srclist assumed value.
XRT position found for srclist. BAT position found.
UVOT exposure began at MET 790429386.40804 or about 0000:11706:11:43:10 UT
Found 3684 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 39% of the srclist region. Found 190 sources in
srclist catalog. WARNING -- srclist catalog buffer filled. Found 50 srclist
source(s) without IDs. There are 0 good candidate(s) in the srclist catalog.
Good candidates must be brighter than 18.12 mag.
The number of srclist sources filled the available telemetry. The weakest
source detected was 18.30 mag.
Found 1 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 170.2388 dec= -61.9167 mag=14.06 sep=2.24".
The closest srclist source has ra= 170.2388 dec= -61.9167 mag=14.06 sep=2.24".
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 nominal 250.000 seconds with the U filter
starting 874 seconds after the BAT trigger. There is a candidate afterglow in
the list of sources generated on-board at
RA(J2000) = 11:20:57.30 = 170.23875
DEC(J2000) = -61:55:00.2 = -61.91672
with a 90%-confidence error radius of about 1.10 arc sec. This position is 2.24
arc sec. from the center of the XRT error circle. The estimated magnitude is
14.06 with a 1-sigma error of about 0.35. 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?
790429386 874 U srclist found no candidates.
790429386 874 ? image data are not available.
List afterglow candidates for other finding charts.
790428700 188 U srclist found no candidates.
790428700 188 U image found no candidates.
------- Tokens for Quick GCN -------