Swift Trigger: 1191188

Presumed name: GRB 230911C

BAT	15^h 07^m 07.68^s, -41° 20′ 02.4″
position:	(226.782, -41.334 ± 180″)
XRT	15^h 07^m 11.53^s, -41° 19′ 47.0″
position:	(226.79804, -41.32973 ± 4.2″)
UVOT	No position available.
Galactic N_HI:	6.92×10²⁰ cm^-2
Galactic E(B-V):	0.096 mag

Best RA:	15^h 07^m 11.53^s	= 226.79804 d
Best Dec:	-41° 19′ 47.0″	= -41.32973 d

Gal Lat:	14.67
Gal Long:	328.61

Sun angle:	69.84°, -3.9 hr East of Sun

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 2 SPER messages, and 1 objects have been found

- Object 1
- RA (J2000) : 15 07 11.53 ( 226.79804)
- Dec (J2000): -41 19 47.0 ( -41.32973)
- Error (90%): 4.157"
- Counts in Source: 48

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	Date reported	Source	Misc	Query

Catalogue Searches. Searched 200′ 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
62.3	226.7845	-41.3157	2MFGC 12243	H=14.385, J=15.200, K=13.903
93.3	226.7992	-41.3038	Gaia DR3 6004882566405687680	G=15.449829
118.7	226.8418	-41.3270	TYC 7829-2776-1	B=12.65, G=11.437800, H=9.912, J=10.272, K=9.873, V=12.03
178.0	226.7961	-41.2803	TYC 7829-2448-1	B=11.27, G=10.672974, H=9.505, J=9.765, K=9.465, V=10.55
198.8	226.8300	-41.2800	HD 133718	B=11.5, V=10.1

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*		Catalogue
8.0	226.7988	-41.3275		NED
21.1	226.7904	-41.3289		NED
21.2	226.7902	-41.3290	B2=21.0, I=17.6, R1=18.6, R2=18.6	USNO-B1
22.2	226.8062	-41.3291	B=19.6, R2=17.9, i=17.5	SSS
22.3	226.8063	-41.3292		NED
28.1	226.7979	-41.3219		NED
30.9	226.8092	-41.3314		NED
35.1	226.7903	-41.3375	B=20.8, R2=18.7, i=18.3	SSS
35.8	226.7904	-41.3378		NED
38.8	226.7921	-41.3200		NED

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

There are 547 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
7.9	226.7970	-41.3277	B2=18.9, I=17.8, R1=18.0, R2=18.1	USNO-B1
8.1	226.7990	-41.3276	h=15.6, j=16.7, k=14.7	2MASS
21.1	226.7903	-41.3290	h=15.4, j=16.2, k=15.2	2MASS
21.6	226.8059	-41.3286	B2=20.0, R1=18.6	USNO-B1
22.3	226.8063	-41.3292	h=15.9, j=16.7, k=15.5	2MASS
22.4	226.8063	-41.3291	B2=19.5, I=17.6, R1=17.8, R2=17.7	USNO-B1
28.3	226.7981	-41.3219	B2=20.4, I=18.5, R1=18.7, R2=18.8	USNO-B1
29.4	226.8086	-41.3315	B2=19.2, I=18.1, R1=18.3, R2=18.5	USNO-B1
29.5	226.8068	-41.3346	B2=21.3, R1=19.7, R2=19.2	USNO-B1
34.4	226.7906	-41.3375	B2=20.9, R1=18.4, R2=18.5	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 485 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.