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Swift Trigger: 994165

Presumed name: GRB 200901B

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BAT 14h 31m 30.96s, -38° 42′ 57.6″
position:(217.879, -38.716 ± 180″)
XRT 14h 31m 25.73s, -38° 42′ 42.1″
position:(217.8572, -38.7117 ± 5.5″)
UVOT No position available.
Galactic NHI:8.63×100 cm-2
Galactic E(B-V):0.108 mag
Best RA:14h 31m 25.73s= 217.8572 d
Best Dec:-38° 42′ 42.1″= -38.7117 d
Gal Lat:20.13
Gal Long:323.49
Sun angle:70.81°, -3.8 hr East of Sun

1Sper #0 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.

No SPER data received yet. Refresh this page to check again.

Known transients within 5′ of the GRB

Click on the offset to view the transient announcement.

Offset (′′)RA DecDate reportedSource MiscQuery
0.0′′217.85720-38.71170GCN #28337GRB 200901B: Swift detection of a burstVizier logo
5.4′′217.85911-38.71147GCN #28339GRB 200901B: Enhanced Swift-XRT positionVizier logo
28.4′′217.86042-38.70422GCN #28345GRB 200901B: 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
75.6217.8487-38.6918TYC 7806-2258-1B=12.488, G=11.8327, H=10.594, I=11.297, J=10.872, K=10.551, R=11.44, V=11.974, g=12.173, i=11.764, r=11.856Query vizier around this object
172.6217.8417-38.7581LEDA 605551Query 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
6.8217.8563-38.7136NEDQuery vizier around this object
11.7217.8575-38.7083NEDQuery vizier around this object
20.6217.8550-38.7172B2=17.8, I=16.1, R1=16.8, R2=16.9USNO-B1Query vizier around this object
20.6217.8550-38.7172NEDQuery vizier around this object
21.2217.8621-38.7161NEDQuery vizier around this object
23.1217.8494-38.7096B=21.8SSSQuery vizier around this object
23.6217.8646-38.7147NEDQuery vizier around this object
25.9217.8492-38.7152B2=20.8, R1=19.0USNO-B1Query vizier around this object
26.1217.8489-38.7150B=21.3SSSQuery vizier around this object
28.8217.8475-38.7143B=20.7, R2=19.3SSSQuery vizier around this object


There are 372 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
6.8217.8564-38.7135h=16.3, j=16.6, k=16.92MASSQuery vizier around this object
7.4217.8562-38.7136B2=20.6, I=18.0, R1=18.4, R2=19.3USNO-B1Query vizier around this object
9.8217.8604-38.7128B2=21.5, R1=18.9, R2=20.3USNO-B1Query vizier around this object
11.7217.8574-38.7085B2=16.8, I=15.4, R1=15.8, R2=15.9USNO-B1Query vizier around this object
11.7217.8575-38.7085h=14.9, j=15.4, k=14.92MASSQuery vizier around this object
20.6217.8550-38.7172h=15.8, j=16.0, k=15.52MASSQuery vizier around this object
26.4217.8531-38.7051B2=19.8, I=18.2, R1=17.9, R2=18.7USNO-B1Query vizier around this object
28.6217.8502-38.7175B2=19.0, I=18.6, R1=18.1, R2=18.8USNO-B1Query vizier around this object
28.6217.8478-38.7147B2=20.8, R2=19.6USNO-B1Query vizier around this object
28.8217.8475-38.7143B2=20.5, R1=17.8, R2=19.2USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 321 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.