srclist overlap message for exposure 2 of trigger 887579
uvot_overlap.pl vrs. 2010-12-20b fem started at 190204d13h38m28s672452usUT
The observation of trigger 887579 started 2019-02-04T05:51:18.9
Examining file ./887579_g317_uvot_sky_srclist.fits
The exposure ID is 570952278
The exposure time is undefined.
The filter is U.
The uvot region is centered at (351.4773,54.8737) with a roll angle of 213.4
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 (351.5340,54.8830) with a radius of 3.000 arc min
This is 2.036 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 25.33 sq. arc min or 0.90 of the BAT error circle
The XRT error circle is centered at (351.4782,54.8764) with a radius of 0.025 arc min
This is 0.161 arc min from the center of the uvot region
The area of the XRT error circle is 0.002 sq. arc min
The UVOT/XRT overlap is 0.002 sq. arc min or 1.00 of the XRT error circle
srclist afterglow message for exposure 2 of trigger 887579
find_uvot_ag.pl vrs. 2017-02-17 fem started at 190204d13h38m51s122472usUT
Observation start time is 2019-02-04T05:51:18.9
Examining file ./887579_g317_uvot_catalog_srclist.fits
The exposure ID is 570952278
The exposure is 249.935 sec.
The bin size is 2 pixels
The filter is U
There are 176 detected source(s) for 887579_g317
Aspect correction adds 0.00047 degrees (0.113 sec of time = 0.98 arc sec) to RA
Aspect correction adds -0.00057 degrees (-2.07 arcsec) to Dec
Total aspect correction is 2.29 arcsec
Star catalogs centered at 351.4758 , 54.8741 with radius 6.31 arc min.
n_usno: 1818 n_gsc: 0
*** WARNING -- bright star catalog has 6 entries brighter than 12 mag
The brightest has mag 11.1276
RA DEC Mag Color
bright star 0: 351.47225 (23:25:53.34) 54.88890 (+54:53:20.0) 11.71 USNO-R
bright star 1: 351.41522 (23:25:39.65) 54.83517 (+54:50:06.6) 11.13 USNO-V
bright star 2: 351.46534 (23:25:51.68) 54.79204 (+54:47:31.3) 11.17 USNO-V
bright star 3: 351.35334 (23:25:24.80) 54.91869 (+54:55:07.3) 11.41 USNO-V
bright star 4: 351.32786 (23:25:18.69) 54.83314 (+54:49:59.3) 11.56 USNO-V
bright star 5: 351.42339 (23:25:41.61) 54.78024 (+54:46:48.9) 11.56 USNO-V
Mean distance difference (CAT_DELTA) for 178 matched entries is 0.715" for 887579_g317
Mean and std. dev of mag. difference (MAG_DELTA) are 1.432 and 0.727 for 887579_g317
Found 12 entries without IDs and 8 entries that are acceptable afterglow candidates for 887579_g317.
Acceptable entries have no ID, XRT distances < 5", and are > 0.8*(80 - 10*(mag-6))" from any bright star
from any bright star and >21.6" from other rejected sources.
1 sources matched bright stars.
Magnitude criteria will be applied later.
BAT distances are from RA=351.5340 (23:26:08.16) DEC=54.8830 (+54:52:58.8)
XRT distances are from RA=351.4782 (23:25:54.77) DEC=54.8764 (+54:52:34.9)
-----------------
Entry 1 in the list of sources is a candidate afterglow for 887579_g317 with 1x1 stamp
ra=351.47772 (23:25:54.65) dec=54.87631 (+54:52:34.7) +/- 1.1" mag=18.21+/-0.35
dist=1.0 REFID=122
src: 1 distr. of nearby unmatched sources: 0 0 0 0 0
Found 5 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
351.4788 54.8718 16.4 -1 USNO-B1 18.76 17.98 18.33
351.4785 54.8713 18.1 -1 USNO-B1 99.99 18.60 99.99
351.4756 54.8774 5.8 -1 USNO-B1 17.64 16.75 17.15
351.4709 54.8758 14.2 -1 USNO-B1 20.39 18.55 19.37
351.4800 54.8771 5.6 -1 USNO-B1 19.90 18.66 19.21
##### This source remains a candidate #####
It has no entries within 4" or brighter than 13 mag
-----------------
Entry 21 in the list of sources is a candidate afterglow for 887579_g317 with 3x3 stamp
ra=351.51282 (23:26:03.08) dec=54.88324 (+54:52:59.7) +/- 1.1" mag=17.47+/-0.35
dist=75.8 REFID=96
*** The position of this source is inconsistent with the XRT position.
The position is 43.9 arc sec from the BAT position.
src: 21 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
351.5043 54.8843 18.0 -1 USNO-B1 17.42 15.88 16.57
351.5051 54.8840 16.2 -1 USNO-B1 16.94 15.80 16.31
351.5120 54.8829 2.1 -1 USNO-B1 15.12 13.53 14.23 *
351.5149 54.8796 13.8 -1 USNO-B1 18.00 16.61 17.23
351.5181 54.8808 14.0 -1 USNO-B1 20.60 19.58 20.03
351.5135 54.8875 15.3 -1 USNO-B1 16.99 15.82 16.34
351.5146 54.8880 17.5 -1 USNO-B1 17.64 16.84 17.20
351.5188 54.8838 12.5 -1 USNO-B1 20.15 18.88 19.44
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 81 in the list of sources is a candidate afterglow for 887579_g317 with 1x1 stamp
ra=351.53807 (23:26:09.14) dec=54.84690 (+54:50:48.8) +/- 1.1" mag=17.89+/-0.35
dist=163.2 REFID=130
*** The position of this source is inconsistent with the XRT position.
The position is 130.2 arc sec from the BAT position.
src: 81 distr. of nearby unmatched sources: 4 1 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
351.5291 54.8453 19.4 -1 USNO-B1 17.88 16.65 17.20
351.5341 54.8469 8.3 -1 USNO-B1 19.46 18.46 18.90
351.5397 54.8502 12.4 -1 USNO-B1 18.57 17.48 17.97
351.5432 54.8511 18.5 -1 USNO-B1 19.54 17.82 18.59
351.5385 54.8459 3.7 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 9.2 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 10.3 -1 USNO-B1 16.92 15.66 16.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 84 in the list of sources is a candidate afterglow for 887579_g317 with 1x1 stamp
ra=351.53851 (23:26:09.24) dec=54.84672 (+54:50:48.2) +/- 1.1" mag=16.55+/-0.35
dist=164.3 REFID=149
*** The position of this source is inconsistent with the XRT position.
The position is 131.0 arc sec from the BAT position.
src: 84 distr. of nearby unmatched sources: 4 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
351.5341 54.8469 9.2 -1 USNO-B1 19.46 18.46 18.90
351.5397 54.8502 12.9 -1 USNO-B1 18.57 17.48 17.97
351.5432 54.8511 18.6 -1 USNO-B1 19.54 17.82 18.59
351.5385 54.8459 2.9 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 8.2 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 9.2 -1 USNO-B1 16.92 15.66 16.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 86 in the list of sources is a candidate afterglow for 887579_g317 with 1x1 stamp
ra=351.53933 (23:26:09.44) dec=54.84698 (+54:50:49.1) +/- 1.1" mag=16.85+/-0.35
dist=165.0 REFID=138
*** The position of this source is inconsistent with the XRT position.
The position is 130.1 arc sec from the BAT position.
src: 86 distr. of nearby unmatched sources: 4 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
351.5341 54.8469 10.9 -1 USNO-B1 19.46 18.46 18.90
351.5397 54.8502 11.7 -1 USNO-B1 18.57 17.48 17.97
351.5432 54.8511 16.9 -1 USNO-B1 19.54 17.82 18.59
351.5385 54.8459 4.2 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 7.1 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 8.1 -1 USNO-B1 16.92 15.66 16.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 88 in the list of sources is a candidate afterglow for 887579_g317 with 3x3 stamp
ra=351.53894 (23:26:09.35) dec=54.84654 (+54:50:47.5) +/- 1.1" mag=16.07+/-0.35
dist=165.4 REFID=38
*** The position of this source is inconsistent with the XRT position.
The position is 131.7 arc sec from the BAT position.
src: 88 distr. of nearby unmatched sources: 4 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
351.5341 54.8469 10.2 -1 USNO-B1 19.46 18.46 18.90
351.5397 54.8502 13.3 -1 USNO-B1 18.57 17.48 17.97
351.5432 54.8511 18.7 -1 USNO-B1 19.54 17.82 18.59
351.5385 54.8459 2.4 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 7.1 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 8.2 -1 USNO-B1 16.92 15.66 16.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 94 in the list of sources is a candidate afterglow for 887579_g317 with 3x3 stamp
ra=351.53783 (23:26:09.08) dec=54.84509 (+54:50:42.3) +/- 1.1" mag=18.01+/-0.35
dist=167.2 REFID=82
*** The position of this source is inconsistent with the XRT position.
The position is 136.7 arc sec from the BAT position.
src: 94 distr. of nearby unmatched sources: 1 4 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
351.5291 54.8453 18.1 -1 USNO-B1 17.88 16.65 17.20
351.5341 54.8469 10.2 -1 USNO-B1 19.46 18.46 18.90
351.5397 54.8502 18.9 -1 USNO-B1 18.57 17.48 17.97
351.5385 54.8459 3.3 -1 USNO-B1 14.29 12.96 13.56 *
351.5422 54.8459 9.4 -1 USNO-B1 16.37 15.46 15.86
351.5427 54.8458 10.4 -1 USNO-B1 16.92 15.66 16.22
Due to star catalog entries marked with *, this is probably NOT the afterglow
These entries are within 4" or brighter than 13 mag
-----------------
Entry 177 in the list of sources is a candidate afterglow for 887579_g317 with 1x1 stamp
ra=351.58972 (23:26:21.53) dec=54.84539 (+54:50:43.4) +/- 1.1" mag=18.41+/-0.35
dist=256.6 REFID=126
*** The position of this source is inconsistent with the XRT position.
The position is 178.0 arc sec from the BAT position.
src: 177 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
351.5891 54.8459 2.0 -1 USNO-B1 16.28 15.05 15.60 *
351.5914 54.8420 12.7 -1 USNO-B1 20.34 18.93 19.55
351.5949 54.8445 11.3 -1 USNO-B1 18.61 17.39 17.93
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
351.4756 54.8774 6.6 -1 USNO-B1 17.64 16.75 17.15
351.4800 54.8771 4.7 -1 USNO-B1 19.90 18.66 19.21
The closest star is 4.66" away.
List UVOT sources within 10" of the XRT position:
Matched source ra=351.47555 (23:25:54.13) dec=54.87756 (+54:52:39.2) +/- 1.1" mag=18.04+/-0.35 dist=7.0 REFID=118
Unmatched source ra=351.47772 (23:25:54.65) dec=54.87631 (+54:52:34.7) +/- 1.1" mag=18.21+/-0.35 dist=1.0 REFID=122
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 < 5",
are > ~(80 - 10*(mag-6))" from any bright star, and have had duplicates removed.
SUMMARY: 0 good candidate(s) found.
srclist paragraph message for exposure 2 of trigger 887579
Catalogued source 4.7" from XRT position may affect AG photometry.
------ Start for Possible Stand-alone Circular ----
In response to GRB190204 (Swift/BAT trigger 887579) at 05:46:00 UT,
---- UVOT paragraph for Joint or Stand-alone Circular ----
UVOT took a finding chart exposure of 250 seconds with the U filter starting
295 seconds after the BAT trigger. There is a candidate afterglow in the
rapidly available 2.7'x2.7' sub-image at
RA(J2000) = 23:25:54.58 = 351.47742
DEC(J2000) = +54:52:34.9 = 54.87637
with a 90%-confidence error radius of about 0.63 arc sec. This position is 1.6
arc sec. from the center of the XRT error circle. The estimated magnitude is
17.76 with a 1-sigma error of about 0.15. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.38.
------- notes for trigger 887579 ------
uvot_gcn_auto.pl vrs. 2016-09-07 fem at 190204d13h38m56s493870usUT
Command line: /Home/eud/uvot_tdrss/perl/uvot_gcn_auto.pl -trig=887579
-expid=570952278 -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/887579/
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 570952278.94334 or about 2019:035:05:51:13 UT
Found 1814 stars in largest star catalog for srclist region. The stars will
eliminate afterglows from about 31% of the srclist region. Found 176 sources in
srclist catalog. Found 12 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 40 source(s) in Genie image catalog. 2 source(s) are within 10.0" of the
xrt position. Found 2 Genie image source(s) without IDs. There are 1 good
candidate(s) in the Genie image catalog. Good candidates must be brighter than
20.28 mag. Found 333 stars in largest star catalog for Genie image region. The
stars will eliminate afterglows from about 32% of the Genie image region.
Found 2 srclist source(s) within 10.0" of the XRT position.
The brightest such source has ra= 351.4777 dec= 54.8763 mag=18.21 sep=1.02".
The closest srclist source has ra= 351.4777 dec= 54.8763 mag=18.21 sep=1.02".
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?
570952278 294 U 351.47772 54.87631 18.21/18.1 1.0 srclist Yes
570952278 294 U 351.47742 54.87637 17.76/20.3 1.6 image Yes
List afterglow candidates for other finding charts.
570952066 82 WHITE 351.47704 54.87647 17.71/19.2 2.5 srclist Yes
570952066 82 WHITE image found no candidates.
570952857 873 WHITE srclist found no candidates.
570952857 873 WHITE image found no candidates.
------- Tokens for Quick GCN -------
CATALOG_TYPE: IMAGE
FILTER: u
GRB_DEC: 54.87637
GRB_ERROR: 0.63
GRB_RA: 351.47742
IMAGE_START_TIME: 05:51:13
MAGNITUDE: 17.76
MAG_ERROR: 0.15
MESSAGE_TYPE: ACK
SOURCE: XRT