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Swift Trigger: 1015919

Presumed name: GRB 210104B

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Related pages: Burst Analyser | Enhanced position | Light curve | Spectrum | Image | XRT Catalogue entry | Download obs data | GCN Notices

BAT	03h 34m 24.24s, +37° 55′ 51.6″
position:	(53.601, +37.931 ± 180″)
XRT	03h 34m 12.89s, +37° 55′ 48.7″
position:	(53.5537, 37.9302 ± 2.3″)
UVOT	No position available.
Galactic NHI:	1.36×100 cm-2
Galactic E(B-V):	0.563 mag

Best RA:	03h 34m 12.89s	= 53.5537 d
Best Dec:	+37° 55′ 48.7″	= 37.9302 d
Gal Lat:	-14.59
Gal Long:	155.03
Sun angle:	133.16°, -8.5 hr East of Sun

¹Sper #4 auto processing.

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GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

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Sun angle for this burst.

UVOT data

No UVOT images are currently available.

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XRT SPER data

SPER results page for this trigger.

There are 6 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 03 34 12.86 (37.9304)
  • Dec (J2000): +37 55 49.4 ( 37.92984)
  • Error (90%): 2.1
  • Counts in Source: 199

See the SPER page for details of how this position was produced.

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Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)	RA	Dec	Date reported	Source	Misc	Query
0.5′′	53.55387	37.93019		GCN #29243	GRB 210104B: Swift detection of a burst
2.4′′	53.55296	37.93050		GCN #29253	GRB 210104B: Enhanced Swift-XRT position
77.7′′	53.56100	37.95100		GCN #29266	GRB 210104B: Swift-BAT refined analysis
134.3′′	53.60100	37.93100		GCN #29242	Swift GRB210104.88: Global MASTER-Net observations report

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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
187.3	53.5000	37.9000	LBN 155.13-14.65

* 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	Query
6.6	53.5558	37.9311			NED
17.9	53.5479	37.9283			NED
18.5	53.5588	37.9270		B2=20.8, R1=19.9, R2=19.9	USNO-B1
24.4	53.5508	37.9367			NED
24.8	53.5608	37.9342			NED
27.5	53.5567	37.9228			NED
30.1	53.5500	37.9381			NED
38.1	53.5421	37.9250			NED
38.5	53.5417	37.9252		B2=20.7, I=18.1, R2=19.1	USNO-B1
39.6	53.5408	37.9258			NED

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

There are 228 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	Query
22.7	53.5604	37.9336	B1=20.2, I=18.3, R2=18.6	USNO-B1
38.1	53.5420	37.9250	h=15.5, j=16.5, k=15.5	2MASS
40.0	53.5406	37.9260	B1=20.1, B2=19.5, I=16.6, R1=17.4, R2=17.5	USNO-B1
40.2	53.5406	37.9260	h=14.9, j=15.4, k=14.6	2MASS
41.4	53.5527	37.9187	h=15.5, j=16.3, k=15.3	2MASS
45.0	53.5560	37.9426	h=13.8, j=14.3, k=13.6	2MASS
45.4	53.5560	37.9427	B1=18.3, B2=17.9, I=15.2, R1=15.6, R2=16.0	USNO-B1
46.1	53.5674	37.9371	R1=19.8, R2=19.9	USNO-B1
53.8	53.5726	37.9293	B1=20.2, B2=19.5, I=16.4, R1=17.3, R2=17.1	USNO-B1
53.9	53.5726	37.9293	h=14.4, j=15.1, k=14.1	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 168 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.