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Swift Trigger: 430094

Presumed name: GRB 100727A

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BAT 10h 16m 39.84s, -21° 21′ 51.8″
position:(154.166, -21.3644 ± 180″)
XRT 10h 16m 42.55s, -21° 23′ 25.1″
position:(154.1773, -21.3903 ± 2.3″)
UVOT No position available.
Galactic NHI:0.00×100 cm-2
Galactic E(B-V):0.050 mag
Best RA:10h 16m 42.55s= 154.1773 d
Best Dec:-21° 23′ 25.1″= -21.3903 d
Gal Lat:
Gal Long:
Sun angle:not found

GCN Notices for this burst.

View this region in Aladin.

Observability of this burst for Swift.

Sun angle for this burst.

UVOT data

UVOT unknown image

unknown image

UVOT unknown image

unknown image

Blink images with DSS (link via GSFC)


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
0.5′′154.17738-21.39042GCN #11000GRB 100727A: Enhanced Swift-XRT positionVizier logo
3.3′′154.17823-21.39002GCN #10998GRB 100727A: Swift detection of a burstVizier logo
101.5′′154.18700-21.41700GCN #11001GRB 100727A� 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

* 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
0.5154.1775-21.3906NEDQuery vizier around this object
34.1154.1726-21.3987B=21.7, R2=20.8SSSQuery vizier around this object
34.3154.1691-21.3846B2=20.5, I=17.8, R1=19.1, R2=18.8USNO-B1Query vizier around this object
46.6154.1818-21.4025B=20.7, R2=19.1, i=18.1SSSQuery vizier around this object
49.8154.1646-21.3831B1=20.7, B2=20.4, I=18.9, R1=16.0, R2=19.4USNO-B1Query vizier around this object
55.6154.1699-21.3765B=21.8, R2=19.5SSSQuery vizier around this object
55.7154.1626-21.3832B1=18.5, R1=16.2USNO-B1Query vizier around this object
64.3154.1962-21.3876B1=19.4, I=19.1USNO-B1Query vizier around this object
65.2154.1579-21.3894B=17.6, R2=17.2, i=17.0SSSQuery vizier around this object
71.6154.1584-21.3995B=22.0, R2=19.8SSSQuery vizier around this object


There are 100 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
8.3154.1781-21.3881B1=19.4, B2=21.6USNO-B1Query vizier around this object
33.1154.1865-21.3936B2=20.7, I=18.5, R1=19.5, R2=19.0USNO-B1Query vizier around this object
34.6154.1690-21.3845h=15.6, j=16.4, k=15.52MASSQuery vizier around this object
39.8154.1731-21.4007B1=21.0, B2=20.3, R1=20.0, R2=19.6USNO-B1Query vizier around this object
40.0154.1698-21.3816B1=17.5, B2=20.6USNO-B1Query vizier around this object
46.5154.1818-21.4025B2=20.4, I=18.2, R1=19.0, R2=19.0USNO-B1Query vizier around this object
55.6154.1700-21.3765B2=21.4, R2=19.2USNO-B1Query vizier around this object
60.2154.1618-21.3819B1=18.4, R1=16.7USNO-B1Query vizier around this object
62.9154.1779-21.3728B2=19.7, I=18.9, R1=19.1, R2=18.7USNO-B1Query vizier around this object
64.6154.1583-21.3934B1=20.6, B2=20.0, I=18.0, R1=18.5, R2=18.4USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 167 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.