Swift Trigger: 1038247

Presumed name: GRB 210323A

BAT	21^h 11^m 48.48^s, +25° 22′ 40.8″
position:	(317.952, +25.378 ± 180″)
XRT	21^h 11^m 47.06^s, +25° 22′ 11.6″
position:	(317.94609, 25.36990 ± 3.5″)
UVOT	No position available.
Galactic N_HI:	8.14×10⁰ cm^-2
Galactic E(B-V):	0.121 mag

Best RA:	21^h 11^m 47.06^s	= 317.94609 d
Best Dec:	+25° 22′ 11.6″	= 25.36990 d

Gal Lat:	-15.48
Gal Long:	72.83

Sun angle:	49.58°, 3.0 hr West

¹Sper #2 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 7 SPER messages, and 2 objects have been found

- Object 1
- RA (J2000) : 21 11 47.04 ( 317.94598)
- Dec (J2000): +25 22 12.1 ( 25.37003)
- Error (90%): 3.500"
- Counts in Source: 356
- Object 2
- RA (J2000) : 21 12 01.20 ( 318.00501)
- Dec (J2000): +25 19 59.8 ( 25.33328)
- Error (90%): 5.130"
- Counts in Source: 9

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′′	317.94609	25.36990	GCN #29699	GRB 210323A: Swift detection of a short burst
2.8′′	317.94665	25.36930	GCN #29704	GRB 210323A: Enhanced Swift-XRT position
4.1′′	317.94725	25.36947	GCN #29720	GRB 210323A: Gemini-North Optical Source Detection
4.4′′	317.94721	25.36922	GCN #29703	GRB 210323A: NOT optical afterglow candidate
4.5′′	317.94729	25.36928	GCN #29708	GRB 210323A: Mondy optical observations� counterpart detection
63.1′′	317.94458	25.35242	GCN #29721	GRB 210323A: Swift-BAT refined analysis

There are 11 matches in total. See the full table for details.

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
109.8	317.9353	25.3410	TYC 2177-2376-1	B=13.03, G=12.2007, H=10.746, J=11.069, K=10.681, V=12.23
150.7	317.9821	25.3963	HD 201913	B=9.27, G=9.2350, V=9.26

* 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
13.3	317.9471	25.3664		NED
24.1	317.9394	25.3727	B2=21.2, R2=20.0	USNO-B1
25.2	317.9533	25.3675		NED
26.2	317.9496	25.3633		NED
26.7	317.9490	25.3630	B1=20.4, B2=19.9, I=18.2, R1=19.1, R2=19.1	USNO-B1
29.1	317.9392	25.3750		NED
30.6	317.9508	25.3772		NED
32.3	317.9363	25.3722		NED
38.0	317.9350	25.3733		NED
39.3	317.9454	25.3589		NED

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

There are 274 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
24.9	317.9533	25.3675	B1=18.9, B2=18.0, I=16.9, R1=17.6, R2=17.3	USNO-B1
25.2	317.9533	25.3674	h=15.8, j=16.3, k=15.5	2MASS
29.0	317.9393	25.3752	B1=18.6, B2=17.7, I=15.9, R1=16.7, R2=16.5	USNO-B1
29.1	317.9392	25.3751	h=14.7, j=15.2, k=14.5	2MASS
29.4	317.9493	25.3775	B1=20.2, B2=20.0, I=18.3, R1=19.1, R2=18.8	USNO-B1
30.5	317.9509	25.3772	B2=21.0, I=18.2, R1=19.3, R2=19.3	USNO-B1
30.6	317.9510	25.3772	h=16.0, j=16.9, k=15.6	2MASS
32.3	317.9365	25.3721	h=12.8, j=13.5, k=12.7	2MASS
32.8	317.9363	25.3723	B1=18.0, B2=17.2, I=14.5, R1=15.5, R2=15.3	USNO-B1
36.7	317.9565	25.3660	B1=20.6, B2=20.9, I=19.0, R2=19.6	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 317 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.