Swift Trigger: 1033264

Presumed name: GRB 210217A

BAT	06^h 30^m 26.40^s, +68° 42′ 54.0″
position:	(97.610, +68.715 ± 180″)
XRT	06^h 30^m 20.09^s, +68° 43′ 30.4″
position:	(97.5837, 68.7251 ± 2.2″)
UVOT	06^h 30^m 19.92^s, +68° 43′ 30.4″
position:	(97.5830, +68.7251 ± 0.6″)
Galactic N_HI:	6.31×10⁰ cm^-2
Galactic E(B-V):	0.103 mag

Best RA:	06^h 30^m 19.92^s	= 97.5830 d
Best Dec:	+68° 43′ 30.4″	= +68.7251 d

Gal Lat:	23.28
Gal Long:	146.09

Sun angle:	113.56°, -8.4 hr East of Sun

¹Sper #4 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 4 SPER messages, and 1 objects have been found

- Object 1 - enhanced position.
- RA (J2000) : 06 30 20.02 (68.7251)
- Dec (J2000): +68 43 30.5 ( 68.72502)
- Error (90%): 2.2
- Counts in Source: 138

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
0.2′′	97.58304	68.72517	GCN #29521	GRB 210217A: Swift detection of a burst with an optical counterpart
0.3′′	97.58292	68.72517	GCN #29555	GRB 210217A: Swift/UVOT Detection
2.9′′	97.58507	68.72536	GCN #29525	GRB 210217A: Enhanced Swift-XRT position
35.7′′	97.57750	68.71539	GCN #29534	GRB 210217A: Swift-BAT refined analysis

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
75.8	97.5258	68.7267	TYC 4358-334-1	B=12.39, G=11.7934, H=10.46, J=10.704, K=10.415, V=11.45
146.8	97.6857	68.7422	TYC 4358-1464-1	B=11.85, G=10.9591, H=9.585, J=9.864, K=9.522, V=10.99

* 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
15.4	97.5779	68.7211		NED
16.7	97.5755	68.7215	R1=20.0, R2=20.3	USNO-B1
24.4	97.6008	68.7236		NED
25.3	97.5840	68.7181	I=18.5, R1=20.4	USNO-B1
33.1	97.5692	68.7328		NED
34.0	97.5617	68.7197		NED
34.7	97.5618	68.7197	B2=21.8, I=18.5	USNO-B1
35.3	97.5929	68.7161		NED
38.2	97.5775	68.7356		NED
40.6	97.5575	68.7317		NED

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

There are 309 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
15.8	97.5939	68.7227	B1=21.0, R1=19.3	USNO-B1
23.2	97.6009	68.7234	B2=21.9, I=18.6, R1=20.4	USNO-B1
25.3	97.6018	68.7226	B1=20.8, B2=21.4, R2=20.1	USNO-B1
38.4	97.5776	68.7355	h=15.3, j=15.9, k=15.3	2MASS
38.5	97.5759	68.7354	I=18.8, R1=19.4, R2=20.2	USNO-B1
38.8	97.5774	68.7356	B1=19.9, B2=18.5, I=16.6, R1=17.2, R2=17.1	USNO-B1
41.1	97.6010	68.7346	B1=20.4, B2=21.0, I=18.1, R1=18.9, R2=19.0	USNO-B1
47.2	97.5600	68.7152	B1=18.9, B2=16.8, I=16.4, R1=16.6, R2=16.8	USNO-B1
47.7	97.5588	68.7154	I=18.5, R1=17.0	USNO-B1
47.8	97.5599	68.7150	h=15.2, j=16.4, k=15.4	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 170 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.