Swift Trigger: 1011980

Presumed name: GRB 201209A

BAT	01^h 32^m 25.44^s, -01° 45′ 46.8″
position:	(23.106, -1.763 ± 180″)
XRT	01^h 32^m 21.82^s, -01° 45′ 12.9″
position:	(23.09092, -1.75359 ± 3.5″)
UVOT	No position available.
Galactic N_HI:	3.22×10⁰ cm^-2
Galactic E(B-V):	0.035 mag

Best RA:	01^h 32^m 21.82^s	= 23.09092 d
Best Dec:	-01° 45′ 12.9″	= -1.75359 d

Gal Lat:	-62.8
Gal Long:	145.78

Sun angle:	122.75°, -8.5 hr East of Sun

¹Sper #7 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 11 SPER messages, and 1 objects have been found

- Object 1
- RA (J2000) : 01 32 21.84 ( 23.09102)
- Dec (J2000): -01 45 13.0 ( -1.75361)
- Error (90%): 3.500"
- Counts in Source: 743

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
0.6′′	23.09079	-1.75347	GCN #29005	GRB 201209A: Swift detection of a burst
4.0′′	23.09071	-1.75467	GCN #29009	GRB 201209A: Enhanced Swift-XRT position
4.3′′	23.09067	-1.75476	GCN #29013	GRB 201209A: Xinglong-2.16m likely optical afterglow detection
35.4′′	23.09600	-1.76200	GCN #29021	GRB 201209A: Swift-BAT refined analysis
64.0′′	23.10600	-1.76300	GCN #29004	Swift GRB201209.24: Global MASTER-Net observations report

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
28.5	23.0833	-1.7516	LEDA 1111036	g=17.314, i=16.029, r=16.487, u=18.909, z=15.696
118.5	23.1052	-1.7239	SDSS J013225.24-014326.1	g=21.8078, i=21.2235, r=21.6046, u=21.7878, z=21.2468
129.8	23.1223	-1.7714	SDSS J013229.35-014617.0	g=21.2575, i=21.0922, r=21.1351, u=21.5164, z=20.4740
142.4	23.0700	-1.7200	PHL 7262	B=18.0
168.6	23.0954	-1.8002	G 271-89	B=15.7, G=13.0151, H=9.845, J=10.392, K=9.584

There are 5 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
23.6	23.0964	-1.7573		B=21.6, R2=20.0	SSS
24.1	23.0904	-1.7469			NED
24.7	23.0842	-1.7525			NED
25.4	23.0967	-1.7575			NED
28.0	23.0835	-1.7514		B=17.4, R=15.6	APM-N
28.6	23.0833	-1.7514	0.077609	Mag=17.99	NED
28.7	23.0832	-1.7516		B=17.9, R2=16.5, i=15.9	SSS
29.1	23.0831	-1.7515		h=13.9, j=14.6, k=13.3	2MASS
29.6	23.0962	-1.7472		Mag=17.99	NED
31.7	23.0862	-1.7611		Mag=17.99	NED

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

There are 250 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
23.9	23.0965	-1.7572	B2=21.0, R2=20.4	USNO-B1
28.1	23.0833	-1.7520	B1=17.8, B2=14.3, I=18.7, R2=14.6	USNO-B1
28.4	23.0833	-1.7516	h=14.6, j=15.2, k=14.0	2MASS
28.7	23.0832	-1.7515	B1=15.3, B2=15.6, I=15.0, R1=13.8, R2=13.3	USNO-B1
39.2	23.0951	-1.7435	B1=20.1, B2=22.0, I=18.7, R1=18.9, R2=18.8	USNO-B1
45.2	23.0787	-1.7566	B2=23.9, R2=18.8	USNO-B1
51.5	23.0901	-1.7679	B1=19.6, B2=20.6, I=18.7, R2=20.0	USNO-B1
58.1	23.0899	-1.7697	B2=21.6, R1=19.7, R2=19.7	USNO-B1
70.7	23.0890	-1.7731	B1=19.6, B2=21.5, I=18.5, R1=18.5, R2=18.6	USNO-B1
76.4	23.0826	-1.7731	B2=23.9, R1=19.3, R2=20.6	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 101 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.