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Swift Trigger: 1164980

Presumed name: GRB 230420A

Back to trigger list.

BAT 10h 44m 03.12s, +32° 05′ 13.2″
position:(161.013, 32.087 ± 180″)
XRT 10h 44m 11.67s, +32° 06′ 28.0″
position:(161.04864, 32.10777 ± 1.9″)
UVOT No position available.
Galactic NHI:1.61×1020 cm-2
Galactic E(B-V):0.020 mag
Best RA:10h 44m 11.67s= 161.04864 d
Best Dec:+32° 06′ 28.0″= 32.10777 d
Gal Lat:62.01
Gal Long:194.96
Sun angle:117.71°, -8.9 hr East of Sun

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 7 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

Catalogue Searches. Searched 200′ 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

* 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
9.4161.051232.1092NEDQuery vizier around this object
12.6161.048732.1042Mag=23.5NEDQuery vizier around this object
12.6161.049032.1043R=22.2, g=23.7, i=21.7, u=24.2, z=22.0SDSSQuery vizier around this object
23.6161.054232.1031Mag=23.1NEDQuery vizier around this object
23.7161.054132.1031R=22.1, g=22.8, i=22.4, u=23.7, z=21.6SDSSQuery vizier around this object
29.1161.044632.1003Mag=23.3NEDQuery vizier around this object
29.1161.044732.1004R=22.3, g=23.3, i=21.9, u=22.9, z=21.1SDSSQuery vizier around this object
33.3161.042232.1152R=21.1, g=22.9, i=20.0, u=26.1, z=19.4SDSSQuery vizier around this object
33.3161.042132.11530.607709Mag=22.7NEDQuery vizier around this object
34.3161.058332.1028NEDQuery vizier around this object


There are 481 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
50.9161.052832.1215I=25.0, R=25.1, g=23.6, u=24.1, z=22.4SDSSQuery vizier around this object
57.1161.034032.1177B1=20.7, R1=20.1USNO-B1Query vizier around this object
58.2161.048232.0916I=21.9, R=22.1, g=22.4, u=22.8, z=21.8SDSSQuery vizier around this object
58.4161.051332.0917B1=20.6, B2=20.3, I=18.9, R1=19.4, R2=19.0USNO-B1Query vizier around this object
58.6161.065132.0993I=20.5, R=21.3, g=22.7, u=24.7, z=20.0SDSSQuery vizier around this object
60.2161.029032.1093I=22.3, R=23.0, g=24.5, u=24.4, z=21.5SDSSQuery vizier around this object
67.5161.064632.1208I=24.3, R=23.8, g=25.9, u=24.3, z=20.8SDSSQuery vizier around this object
67.5161.049732.1265I=22.3, R=25.1, g=25.5, u=25.6, z=23.6SDSSQuery vizier around this object
70.8161.026232.1129B1=20.4, B2=20.8USNO-B1Query vizier around this object
72.2161.043232.0882B2=20.3, I=18.6, R1=19.4, R2=18.9USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 149 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.