Skip banner and navigation tools.

 |  site map

Sky images|
UVOT images|
SPER data|

[Hide] [Trigger list]

Swift Trigger: 1031636

Presumed name: GRB 210209A

Back to trigger list.

BAT 21h 52m 23.04s, +43° 33′ 32.4″
position:(328.096, +43.559 ± 180″)
XRT 21h 52m 29.72s, +43° 33′ 25.6″
position:(328.12384, 43.55710 ± 3.5″)
UVOT No position available.
Galactic NHI:2.34×100 cm-2
Galactic E(B-V):0.335 mag
Best RA:21h 52m 29.72s= 328.12384 d
Best Dec:+43° 33′ 25.6″= 43.55710 d
Gal Lat:-8.28
Gal Long:91.91
Sun angle:58.19°, -0.3 hr East of Sun

1Sper #6 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 6 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
2.5′′328.1230043.55744GCN #29442GRB 210209A: Swift detection of a burstVizier logo
4.2′′328.1222543.55698GCN #29443GRB 210209A: Enhanced Swift-XRT positionVizier logo
82.5′′328.0970043.54500GCN #29479GRB 210209A: 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
75.5328.131543.5369TYC 3197-2086-2B=12.99, V=12.18Query vizier around this object
76.4328.131143.5365TYC 3197-2086-1B=11.26, G=10.510, H=9.102, J=9.469, K=9.152, V=10.76Query vizier around this object
88.5328.157543.5539TYC 3197-2141-1B=12.87, G=10.1285, H=6.452, J=7.302, K=6.153, V=11.20Query vizier around this object
164.8328.176243.5314TYC 3197-2246-1B=11.68, G=11.2249, H=10.29, J=10.451, K=10.223, V=11.09Query vizier around this object

There are 4 SIMBAD objects within the position error. The full list is here.

* 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
11.6328.123843.5603NEDQuery vizier around this object
11.9328.123743.5604I=15.1, R1=16.3, R2=16.2USNO-B1Query vizier around this object
12.3328.123343.5605B1=17.8, B2=18.2, I=16.4, R2=17.9USNO-B1Query vizier around this object
20.0328.130443.5542NEDQuery vizier around this object
20.3328.129243.5531NEDQuery vizier around this object
20.7328.118343.5614NEDQuery vizier around this object
21.3328.119443.5620I=18.3, R1=18.9USNO-B1Query vizier around this object
24.4328.120743.5507B1=21.0, B2=20.5, I=17.9, R1=19.0USNO-B1Query vizier around this object
35.5328.134243.5508NEDQuery vizier around this object
36.2328.136343.5614NEDQuery vizier around this object


There are 431 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
11.6328.124043.5603h=14.6, j=15.1, k=14.42MASSQuery vizier around this object
19.9328.130343.5541B1=15.2, B2=15.4, I=12.4, R1=14.2, R2=13.6USNO-B1Query vizier around this object
20.0328.130443.5542h=11.3, j=12.0, k=11.22MASSQuery vizier around this object
20.3328.129243.5530h=15.7, j=15.9, k=13.22MASSQuery vizier around this object
20.7328.118443.5613h=15.9, j=16.7, k=16.62MASSQuery vizier around this object
21.1328.118343.5614B2=20.7, I=17.9, R1=18.7, R2=18.7USNO-B1Query vizier around this object
25.6328.118043.5514B1=19.9, B2=20.4, I=18.0, R1=18.3, R2=18.5USNO-B1Query vizier around this object
26.5328.130443.5627B1=20.9, B2=20.5, I=18.1, R1=18.6, R2=18.7USNO-B1Query vizier around this object
28.2328.130143.5507B1=17.6, B2=20.6, R1=19.2USNO-B1Query vizier around this object
29.9328.128043.5648B1=21.1, B2=20.7, I=18.3, R1=19.5, R2=19.0USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 506 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.