Swift Trigger: 540255

Presumed name: GRB 121202A

BAT	17^h 07^m 15.60^s, +23° 57′ 07.2″
position:	(256.815, +23.952 ± 180″)
XRT	17^h 07^m 11.29^s, +23° 56′ 55.9″
position:	(256.79704, 23.94886 ± 3.7″)
UVOT	No position available.
Galactic N_HI:	3.91×10²⁰ cm^-2
Galactic E(B-V):	NED unavailable

Best RA:	17^h 07^m 11.29^s	= 256.79704 d
Best Dec:	+23° 56′ 55.9″	= 23.94886 d

Gal Lat:	32.85
Gal Long:	45.18

Sun angle:	46.62°, -0.5 hr East of Sun

¹Sper #3 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

white image

Blink images with DSS (link via GSFC)

XRT SPER data

SPER results page for this trigger.

There are 17 SPER messages, and 1 objects have been found

- Object 1
- RA (J2000) : 17 07 11.29 ( 256.79705)
- Dec (J2000): +23 56 55.7 ( 23.94881)
- Error (90%): 3.529"
- Counts in Source: 600

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
0.0′′	256.79704	23.94886	GCN #14036	GRB 121202A: Swift-XRT observations
2.5′′	256.79689	23.94818	GCN #14038	GRB 121202A: Enhanced Swift-XRT position
32.0′′	256.79042	23.94236	GCN #14037	GRB 121202A: Swift-BAT refined analysis
60.2′′	256.81500	23.95200	GCN #14032	GRB 121202A: Swift detection of a burst

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
101.6	256.8273	23.9547	TYC 2060-325-1	B=12.24, V=11.60
129.1	256.8170	23.9180	IRAS F17051+2358

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table²	Observatory	Query
175.2	256.7710	23.9064	6.340e+0 +/- 1.800e-1	0.000e+0	XTEASSCAT

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*		Catalogue
14.4	256.7931	23.9505	R=21.4, g=22.3, i=21.1, u=23.0, z=20.3	SDSS
14.4	256.7929	23.9506	Mag=22.2	NED
14.4	256.7930	23.9505	R=21.4, g=22.6, i=21.0, u=23.6, z=20.3	SDSS
17.0	256.7920	23.9479	R=22.2, g=23.5, i=22.0, u=24.6, z=21.2	SDSS
17.3	256.7946	23.9531	Mag=23.5	NED
17.4	256.7947	23.9532	R=22.8, g=23.0, i=23.6, u=24.7, z=21.7	SDSS
21.4	256.8014	23.9533	R=23.3, g=23.9, i=22.1, u=24.5, z=21.8	SDSS
21.6	256.8014	23.9533	R=22.0, g=24.7, i=21.2, u=22.6, z=21.6	SDSS
27.2	256.7949	23.9562	R=20.7, g=21.6, i=20.4, u=22.6, z=20.2	SDSS
27.2	256.7950	23.9561	Mag=21.7	NED

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

There are 795 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
17.4	256.7947	23.9532	I=22.8, R=22.6, g=23.4, u=24.4, z=23.8	SDSS
18.6	256.8015	23.9520	I=22.5, R=22.6, g=24.2, u=23.8, z=21.9	SDSS
27.8	256.7906	23.9438	I=21.6, R=21.8, g=22.4, u=23.4, z=22.0	SDSS
27.9	256.7906	23.9438	I=21.6, R=22.0, g=22.6, u=23.1, z=21.4	SDSS
32.0	256.8028	23.9417	I=20.6, R=20.8, g=21.4, u=22.6, z=20.6	SDSS
32.0	256.8028	23.9417	I=20.5, R=20.7, g=21.3, u=22.7, z=20.5	SDSS
32.0	256.8028	23.9417	B2=20.7, R2=20.2	USNO-B1
32.5	256.8006	23.9573	I=21.1, R=22.3, g=23.5, u=26.2, z=20.5	SDSS
32.7	256.8006	23.9573	I=21.1, R=22.2, g=23.6, u=25.0, z=20.3	SDSS
37.2	256.7875	23.9544	I=18.9, R=19.1, g=19.8, u=21.3, z=18.7	SDSS

Queried USNO-B1, SDSS, 2MASS.

There are 731 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.