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Swift Trigger: 1340561

Presumed name: GRB 250807B

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BAT 01h 02m 20.40s, -59° 05′ 38.4″
position:(15.585, -59.094 ± 180″)
XRT 01h 02m 33.07s, -59° 07′ 07.0″
position:(15.6378, -59.1186 ± 5.6″)
UVOT 01h 02m 32.98s, -59° 07′ 07.7″
position:(15.6374, -59.1188 ± 0.8″)
Galactic NHI:1.77×1020 cm-2
Galactic E(B-V):0.019 mag
Best RA:01h 02m 32.98s= 15.6374 d
Best Dec:-59° 07′ 07.7″= -59.1188 d
Gal Lat:-57.95
Gal Long:300.24
Sun angle:120.11°, 8.1 hr West

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.

XRT SPER data

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

Catalogue Searches. Searched 200′ around UVOT 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).

SIMBAD

RA*Dec*SIMBAD name Query
123.115.6981-59.1329GALEX J010247.4-590759G=19.804470Query vizier around this object
163.415.5490-59.1170CD-59 187BB=11.66, V=11.07Query vizier around this object
163.715.5489-59.1170CD-59 187B=11.091, G=10.264741, H=8.836, J=9.176, K=8.744, R=10.354, V=10.507, g=10.861, r=10.363Query vizier around this object
163.915.5488-59.1170CD-59 187AB=12.02, V=10.95Query 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.

Galaxies

RA*Dec*Redshift CatalogueQuery
1.615.6379-59.1186NEDQuery vizier around this object
12.515.6438-59.1175NEDQuery vizier around this object
17.815.6279-59.1203NEDQuery vizier around this object
29.615.6225-59.1219NEDQuery vizier around this object
31.315.6396-59.1275NEDQuery vizier around this object
34.015.6275-59.1108NEDQuery vizier around this object
38.415.6400-59.1083NEDQuery vizier around this object
44.015.6379-59.1311NEDQuery vizier around this object
49.015.6125-59.1236NEDQuery vizier around this object
55.815.6613-59.1092Mag=19.2NEDQuery vizier around this object

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

There are 190 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

Stars

RA*Dec* CatalogueQuery
48.615.6126-59.1233R1=19.6, R2=19.9USNO-B1Query vizier around this object
55.815.6608-59.1090B2=21.2, I=18.1, R1=19.1, R2=19.9USNO-B1Query vizier around this object
56.315.6613-59.1091h=15.2, j=16.0, k=15.32MASSQuery vizier around this object
56.415.6301-59.1340B2=20.1, I=18.2, R1=19.4, R2=19.6USNO-B1Query vizier around this object
57.015.6549-59.1057B2=18.9, I=18.8, R1=18.6, R2=18.7USNO-B1Query vizier around this object
69.515.6019-59.1125B2=21.4, R1=19.6USNO-B1Query vizier around this object
70.515.6014-59.1123B2=21.4, R1=19.6USNO-B1Query vizier around this object
70.715.6069-59.1069B2=20.6, R1=19.2, R2=19.3USNO-B1Query vizier around this object
75.315.6560-59.1374B2=21.4, I=18.6, R1=19.6, R2=20.0USNO-B1Query vizier around this object
75.915.6027-59.1075B2=19.9, I=19.1, R1=18.6, R2=18.6USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 93 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.