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Swift Trigger: 279935

Presumed name: GRB 070521

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BAT 16h 10m 40.56s, +30° 14′ 27.6″
position:(242.669, +30.241 ± 180″)
XRT 16h 10m 38.47s, +30° 15′ 18.7″
position:(242.6603, +30.2552 ± 3.6″)
UVOT No position available.
Galactic NHI:0.00×100 cm-2
Galactic E(B-V):0.027 mag
Best RA:16h 10m 38.47s= 242.6603 d
Best Dec:+30° 15′ 18.7″= +30.2552 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
3.5′′242.6608330.25606GCN #6452GRB 070521: Swift-XRT refined analysisVizier logo
4.6′′242.6614730.25599GCN #6451GRB 070521: Keck imagingVizier logo
9.0′′242.6606330.25769GCN #6444GRB 070521: Subaru observations and possible host detectionVizier logo
9.6′′242.6604230.25786GCN #6431GRB 070521: Swift detection of a burstVizier logo
19.8′′242.6587530.26053GCN #6440GRB 070521� Swift-BAT refined analysisVizier logo
29.5′′242.6697930.25514GCN #6433GRB070521: Bright SDSS Galaxy Near XRT Error CircleVizier logo
57.8′′242.6690030.24100GCN #6432GRB070521 - SDSS Pre-Burst ObservationsVizier logo

There are 13 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
4.3242.660830.2563GRB 070521Query vizier around this object
29.8242.669930.25522MASX J16104077+3015188H=12.411, J=13.118, K=12.23Query 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
4.3242.660830.2564NEDQuery vizier around this object
6.5242.662030.2563R=23.9, g=24.6, i=22.4, u=24.2, z=23.2SDSSQuery vizier around this object
9.4242.663330.2556B=22.2, R=19.9APM-NQuery vizier around this object
13.1242.664430.2543R=22.9, g=23.5, i=21.4, u=23.8, z=22.0SDSSQuery vizier around this object
14.5242.655630.2551B=22.1, R=20.0APM-NQuery vizier around this object
14.5242.655630.2555B1=21.4, R1=20.1USNO-B1Query vizier around this object
16.1242.665130.2569R=22.6, g=23.9, i=22.0, u=24.7, z=22.8SDSSQuery vizier around this object
24.7242.664330.2493R=22.5, g=23.4, i=21.6, u=23.6, z=22.2SDSSQuery vizier around this object
27.5242.658130.2626R=21.3, g=22.0, i=21.3, u=22.8, z=20.5SDSSQuery vizier around this object
27.5242.657930.2625Mag=22.1NEDQuery vizier around this object


There are 473 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
29.7242.669830.2551h=13.2, j=13.8, k=12.92MASSQuery vizier around this object
29.7242.669830.2551B1=14.8, B2=12.6, I=11.3, R1=12.5, R2=12.4USNO-B1Query vizier around this object
31.8242.663730.2635R1=18.9, R2=19.9USNO-B1Query vizier around this object
34.0242.671130.2567B1=20.0, B2=18.6USNO-B1Query vizier around this object
34.2242.651230.2605I=22.2, R=23.0, g=23.2, u=23.2, z=22.9SDSSQuery vizier around this object
44.2242.663930.2671I=18.0, R=19.3, g=20.7, u=23.5, z=17.3SDSSQuery vizier around this object
44.3242.647830.2610B2=20.5, I=18.6, R1=18.8, R2=19.1USNO-B1Query vizier around this object
44.3242.663930.2671h=15.6, j=16.0, k=15.02MASSQuery vizier around this object
44.6242.664030.2672B2=21.0, I=17.7, R1=18.9, R2=19.1USNO-B1Query vizier around this object
44.8242.674730.2550I=23.3, R=23.6, g=23.1, u=23.7, z=22.9SDSSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 255 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.