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Swift Trigger: 948361

Presumed name: GRB 200109A

Back to trigger list.

BAT 20h 28m 41.04s, +53° 00′ 10.8″
position:(307.171, +53.003 ± 180″)
XRT 20h 28m 30.19s, +52° 59′ 35.5″
position:(307.1258, 52.9932 ± 2.2″)
UVOT No position available.
Galactic NHI:2.59×100 cm-2
Galactic E(B-V):0.385 mag
Best RA:20h 28m 30.19s= 307.1258 d
Best Dec:+52° 59′ 35.5″= 52.9932 d
Gal Lat:8.28
Gal Long:89.26
Sun angle:76.79°, -1.2 hr East of Sun

1Sper #3 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 9 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
0.0′′307.1258052.99320GCN #26678GRB 200109A: Swift detection of a burstVizier logo
3.0′′307.1246252.99363GCN #26681GRB 200109A: Enhanced Swift-XRT positionVizier logo
28.3′′307.1160052.98800GCN #26692GRB 200109A: Swift-BAT refined analysisVizier logo
104.1′′307.1710053.00300GCN #26679Swift GRB200109.07: Global MASTER-Net observations report Vizier logo
141.0′′307.1595053.02672GCN #26680Fermi trigger No 600227156: Global MASTER-Net observations report Vizier logo

There are 23 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).


RA*Dec*SIMBAD name Query
149.6307.118752.95192MASS J20282849+5257067G=11.5466, H=9.503, J=9.998, K=9.404Query vizier around this object

* RA/Dec in equinox J2000

X-ray sources

RA*Dec* Source table2Observatory Query
156.6307.195052.98070.0070500001311302185 +/- 0.0017000000225380063ROSATQuery vizier around this object

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

1Energy band for count-rate is mission specific.


RA*Dec*Redshift CatalogueQuery
13.6307.124252.9969NEDQuery vizier around this object
16.2307.133252.9940B2=19.3, I=17.5, R1=17.7, R2=18.5USNO-B1Query vizier around this object
16.6307.133352.9933NEDQuery vizier around this object
17.3307.133752.9928NEDQuery vizier around this object
17.8307.117652.9935B2=20.9, I=18.1, R1=19.0, R2=19.5USNO-B1Query vizier around this object
17.9307.126052.9982B2=20.5, I=18.1, R1=18.6, R2=19.6USNO-B1Query vizier around this object
19.1307.127852.9880B1=19.0, B2=19.0, I=17.5, R1=17.8, R2=18.3USNO-B1Query vizier around this object
19.6307.127552.9878NEDQuery vizier around this object
21.8307.116752.9958NEDQuery vizier around this object
22.9307.135352.9903B1=20.0, B2=20.0, I=17.9, R1=18.6, R2=19.4USNO-B1Query vizier around this object


There are 721 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
11.7307.122052.9955B2=20.9, R2=20.2USNO-B1Query vizier around this object
13.6307.124052.9968h=14.5, j=14.9, k=14.52MASSQuery vizier around this object
13.8307.124052.9969B1=17.3, B2=17.3, I=15.6, R1=15.8, R2=16.6USNO-B1Query vizier around this object
16.3307.133252.9938B1=18.7, B2=18.5, I=16.3, R1=16.8, R2=17.6USNO-B1Query vizier around this object
16.8307.133652.9931B2=18.2, I=16.9, R2=17.5USNO-B1Query vizier around this object
17.3307.133852.9929h=15.5, j=16.4, k=16.22MASSQuery vizier around this object
21.5307.116952.9958I=18.0, R2=19.3USNO-B1Query vizier around this object
21.9307.128452.9991I=18.2, R1=19.3, R2=19.3USNO-B1Query vizier around this object
22.6307.116152.9908B1=20.9, B2=20.3, R2=20.0USNO-B1Query vizier around this object
30.1307.121052.9854h=12.3, j=12.9, k=12.22MASSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 448 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.