Swift Trigger: 929981

Presumed name: GRB 191017B

BAT	16^h 20^m 36.24^s, -73° 33′ 39.6″
position:	(245.151, -73.561 ± 180″)
XRT	16^h 20^m 29.88^s, -73° 32′ 26.2″
position:	(245.1245, -73.5406 ± 2.1″)
UVOT	No position available.
Galactic N_HI:	7.16×10⁰ cm^-2
Galactic E(B-V):	0.102 mag

Best RA:	16^h 20^m 29.88^s	= 245.1245 d
Best Dec:	-73° 32′ 26.2″	= -73.5406 d

Gal Lat:	-16.44
Gal Long:	316.44

Sun angle:	69.11°, -2.9 hr East of Sun

¹Sper #6 auto processing.

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

No UVOT images are currently available.

XRT SPER data

SPER results page for this trigger.

There are 6 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 16 20 29.91 (-73.5405)
- Dec (J2000): -73 32 25.7 ( -73.54052)
- Error (90%): 2.1
- Counts in Source: 134

See the SPER page for details of how this position was produced.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Source	Misc
0.7′′	245.12493	-73.54074	GCN #26022	GRB 191017B: Enhanced Swift-XRT position
1.2′′	245.12550	-73.54040	GCN #26021	GRB 191017B: Swift detection of a burst
151.7′′	245.13042	-73.58269	GCN #26030	GRB 191017B: Swift-BAT refined analysis

Catalogue Searches. Searched 3.33′ around XRT position

Click on the distance to view the full details (not available for sources from the SSS catalogue). Click on the column headers to sort the table on that column (click again to invert sort order).

SIMBAD

	RA*	Dec*	SIMBAD name		Query
85.7	245.0426	-73.5460	RAVE J162010.3-733246	B=11.9, G=11.3975, H=10.178, I=10.866, J=10.447, K=10.129, R=11.41, g=11.770, i=11.233, r=11.356
192.5	244.9769	-73.5073	UCAC2 980237	B=13.86, H=10.697, I=11.80, J=11.112, K=10.567, R=12.55, V=12.83, g=13.29, i=12.19, r=12.48

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table²	Observatory	Query

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
4.4	245.1208	-73.5400		NED
5.2	245.1197	-73.5411	B=20.4, R2=18.7	SSS
9.3	245.1333	-73.5403		NED
9.5	245.1336	-73.5401	B=19.4, R2=18.6, i=17.9	SSS
10.7	245.1294	-73.5380	B=21.1, R2=20.8	SSS
17.4	245.1250	-73.5358		NED
17.4	245.1293	-73.5360	B2=19.8, I=18.5, R1=18.6, R2=19.0	USNO-B1
20.5	245.1337	-73.5356		NED
21.0	245.1437	-73.5386		NED
21.6	245.1442	-73.5384	B=21.2, R2=19.3, i=18.4	SSS

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

There are 388 galaxies within the position error. The full list is here.

* RA/Dec in equinox J2000

Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example

Stars

	RA*	Dec*		Catalogue
4.3	245.1208	-73.5400	B2=17.8, I=15.6, R1=15.4, R2=15.9	USNO-B1
4.4	245.1210	-73.5399	h=14.4, j=15.0, k=14.4	2MASS
4.9	245.1198	-73.5409	B2=19.4, I=17.9, R1=16.4, R2=17.2	USNO-B1
9.8	245.1339	-73.5402	B2=19.1, I=18.5, R1=17.9, R2=18.4	USNO-B1
11.4	245.1215	-73.5436	B2=19.4, I=18.6, R1=18.0, R2=19.0	USNO-B1
13.3	245.1360	-73.5424	B2=19.4, I=18.6, R1=17.8, R2=18.5	USNO-B1
20.2	245.1338	-73.5356	B2=17.5, I=16.3, R1=16.0, R2=16.4	USNO-B1
20.5	245.1340	-73.5356	h=15.3, j=15.6, k=14.9	2MASS
21.7	245.1442	-73.5383	B2=20.5, R1=18.7	USNO-B1
23.9	245.1033	-73.5378	R1=19.3, R2=20.2	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 405 stars within the position error. The full list is here.

* RA/Dec in equinox J2000

Magnitudes depend on the catalogue. e.g. For Sloan, R is the Sloan r mag, not the Johnson R from APM, for example.