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Home > GRB region information > 661253

Swift Trigger: 661253

Presumed name: GRB 151023A

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Related pages: Burst Analyser | Enhanced position | Light curve | Spectrum | Image | XRT Catalogue entry | Download obs data | GCN Notices

BAT	18h 04m 04.56s, -08° 19′ 22.8″
position:	(271.019, -8.323 ± 180″)
XRT	18h 03m 56.30s, -08° 18′ 59.0″
position:	(270.9846, -8.3164 ± 3.3″)
UVOT	No position available.
Galactic NHI:	2.66×100 cm-2
Galactic E(B-V):	1.208 mag

Best RA:	18h 03m 56.30s	= 270.9846 d
Best Dec:	-08° 18′ 59.0″	= -8.3164 d
Gal Lat:	6.62
Gal Long:	20.04
Sun angle:	62.51°, -4.2 hr East of Sun

¹Onboard position

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GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

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Sun angle for this burst.

UVOT data

Blink images with DSS (link via GSFC)

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XRT SPER data

SPER results page for this trigger.

There are 8 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 18 03 56.26 (-8.3166)
  • Dec (J2000): -08 18 59.8 ( -8.31570)
  • Error (90%): 2.8
  • Counts in Source: 22

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

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Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Date reported	Source	Misc	Query
0.1′′	270.98458	-8.31640		GCN #18459	GRB 151023A: Enhanced Swift-XRT position
0.5′′	270.98470	-8.31650		GCN #18450	GRB 151023A: Swift detection of a burst
138.8′′	271.01200	-8.28900		GCN #18469	GRB 151023A: Swift-BAT refined analysis

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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
171.5	270.9613	-8.2747	PMN J1803-0816
173.6	270.9527	-8.2800	2MASX J18034864-0816478	H=11.885, J=13.141, K=11.447
184.9	271.0048	-8.2691	2MASX J18040116-0816088	H=11.959, J=13.055, K=11.673
191.2	270.9691	-8.3673	IRAS 18011-0822

There are 4 SIMBAD objects within the position error. The full list is here.

* 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*	Redshift		Catalogue	Query
15.1	270.9812	-8.3138		I=17.4, R1=18.9, R2=18.6	USNO-B1
15.5	270.9813	-8.3136		B=21.7, R2=20.0, i=18.8	SSS
28.1	270.9883	-8.3233		I=17.8, R2=19.5	USNO-B1
33.9	270.9859	-8.3257		B=21.1, i=19.9	SSS
35.0	270.9772	-8.3227		B=21.0, R2=19.4, i=19.4	SSS
35.8	270.9746	-8.3151		I=17.2, R2=19.0	USNO-B1
41.1	270.9838	-8.3050		B2=20.9, I=17.7, R2=19.1	USNO-B1
41.5	270.9787	-8.3065		B=21.0, R2=19.4, i=19.0	SSS
44.2	270.9970	-8.3155		B2=18.5, I=15.8	USNO-B1
44.3	270.9796	-8.3051		B=21.0, R2=19.0, i=18.4	SSS

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

There are 183 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	Query
1.7	270.9843	-8.3160	h=15.7, j=16.5, k=15.6	2MASS
14.7	270.9808	-8.3149	h=15.5, j=16.2, k=15.1	2MASS
15.1	270.9813	-8.3138	h=15.0, j=15.8, k=14.7	2MASS
17.6	270.9850	-8.3115	h=13.0, j=13.8, k=12.9	2MASS
17.8	270.9851	-8.3115	B1=17.9, B2=18.1, I=15.2, R1=15.7, R2=15.9	USNO-B1
19.9	270.9861	-8.3111	B2=19.4, I=17.4, R2=18.6	USNO-B1
25.2	270.9901	-8.3120	h=15.7, j=16.3, k=15.1	2MASS
26.4	270.9902	-8.3116	B2=20.4, I=17.8, R2=18.8	USNO-B1
26.7	270.9819	-8.3233	h=14.5, j=15.4, k=14.3	2MASS
26.9	270.9819	-8.3234	I=17.3, R1=18.4, R2=18.5	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 657 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.