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Swift Trigger: 1033264

Presumed name: GRB 210217A

Back to trigger list.

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


SPER results page for this trigger.

Image of the SPER data

There are 4 SPER messages, and 1 objects have been found

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 DecDate reportedSource MiscQuery
0.2′′97.5830468.72517GCN #29521GRB 210217A: Swift detection of a burst with an optical counterpartVizier logo
0.3′′97.5829268.72517GCN #29555GRB 210217A: Swift/UVOT DetectionVizier logo
2.9′′97.5850768.72536GCN #29525GRB 210217A: Enhanced Swift-XRT positionVizier logo
35.7′′97.5775068.71539GCN #29534GRB 210217A: Swift-BAT refined analysisVizier logo

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).


RA*Dec*SIMBAD name Query
75.897.525868.7267TYC 4358-334-1B=12.39, G=11.7934, H=10.46, J=10.704, K=10.415, V=11.45Query vizier around this object
146.897.685768.7422TYC 4358-1464-1B=11.85, G=10.9591, H=9.585, J=9.864, K=9.522, V=10.99Query vizier around this object

* RA/Dec in equinox J2000

X-ray sources

RA*Dec* Source table2Observatory Query

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

1Energy band for count-rate is mission specific.


RA*Dec*Redshift CatalogueQuery
15.497.577968.7211NEDQuery vizier around this object
16.797.575568.7215R1=20.0, R2=20.3USNO-B1Query vizier around this object
24.497.600868.7236NEDQuery vizier around this object
25.397.584068.7181I=18.5, R1=20.4USNO-B1Query vizier around this object
33.197.569268.7328NEDQuery vizier around this object
34.097.561768.7197NEDQuery vizier around this object
34.797.561868.7197B2=21.8, I=18.5USNO-B1Query vizier around this object
35.397.592968.7161NEDQuery vizier around this object
38.297.577568.7356NEDQuery vizier around this object
40.697.557568.7317NEDQuery vizier around this object


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


RA*Dec* CatalogueQuery
15.897.593968.7227B1=21.0, R1=19.3USNO-B1Query vizier around this object
23.297.600968.7234B2=21.9, I=18.6, R1=20.4USNO-B1Query vizier around this object
25.397.601868.7226B1=20.8, B2=21.4, R2=20.1USNO-B1Query vizier around this object
38.497.577668.7355h=15.3, j=15.9, k=15.32MASSQuery vizier around this object
38.597.575968.7354I=18.8, R1=19.4, R2=20.2USNO-B1Query vizier around this object
38.897.577468.7356B1=19.9, B2=18.5, I=16.6, R1=17.2, R2=17.1USNO-B1Query vizier around this object
41.197.601068.7346B1=20.4, B2=21.0, I=18.1, R1=18.9, R2=19.0USNO-B1Query vizier around this object
47.297.560068.7152B1=18.9, B2=16.8, I=16.4, R1=16.6, R2=16.8USNO-B1Query vizier around this object
47.797.558868.7154I=18.5, R1=17.0USNO-B1Query vizier around this object
47.897.559968.7150h=15.2, j=16.4, k=15.42MASSQuery vizier around this object

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.