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Summary|
Sky images|
UVOT images|
SPER data|
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[Hide] [Trigger list]

Swift Trigger: 780845;

Presumed name: GRB 171020A

Back to trigger list.

BAT	02^h 37^m 02.88^s, +15° 11′ 09.6″
position:	(39.262, 15.186 ± 180″)
XRT	02^h 36^m 59.57^s, +15° 12′ 13.7″
position:	(39.2482, 15.2038 ± 2.2″)
UVOT	No position available.
Galactic N_HI:	9.70×10⁰ cm^-2
Galactic E(B-V):	0.179 mag

Best RA:	02^h 36^m 59.57^s	= 39.2482 d
Best Dec:	+15° 12′ 13.7″	= 15.2038 d

Gal Lat:	-40.52
Gal Long:	157.28

Sun angle:	165.85°, 11.1 hr West

¹Sper #2 auto processing.

Galaxies within 3.33 of XRT position

	RA*	Dec*	Redshift		Catalogue	Query
24.5	39.2475	15.1970		B1=21.1, B2=20.6, I=17.0, R1=18.7, R2=18.5	USNO-B1
25.4	39.2474	15.1968		B=21.3, R=18.3	APM-N
38.0	39.2395	15.2102		B1=17.9, B2=17.4, I=16.3, R1=16.9, R2=16.6	USNO-B1
58.4	39.2333	15.1964		B=21.8, R=19.2	APM-N
91.2	39.2615	15.1819		B=21.8, R=19.6	APM-N
100.7	39.2193	15.2010		B=21.8, R=19.8	APM-N
112.5	39.2438	15.1728		B=21.8, R=20.0	APM-N
115.7	39.2236	15.1821		I=18.6, R2=19.5	USNO-B1
119.3	39.2216	15.2248		B=21.6, R=19.5	APM-N
149.4	39.2054	15.1998		B=21.8, R=20.0	APM-N
178.7	39.2421	15.1545		B=21.8, R=20.0	APM-N
185.1	39.1952	15.1987		B1=21.2, I=18.5, R2=19.9	USNO-B1
198.3	39.1931	15.1895		B=21.1, R=20.0	APM-N

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

* 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