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Swift Trigger: 500914

Presumed name: GRB 110818A

Back to trigger list.

BAT 21h 09m 32.16s, -63° 58′ 12.0″
position:(317.384, -63.970 ± 180″)
XRT 21h 09m 21.05s, -63° 58′ 52.3″
position:(317.3377, -63.9812 ± 2.0″)
UVOT No position available.
Galactic NHI:0.00×100 cm-2
Galactic E(B-V):0.035 mag
Best RA:21h 09m 21.05s= 317.3377 d
Best Dec:-63° 58′ 52.3″= -63.9812 d
Gal Lat:
Gal Long:
Sun angle:128.58°, -11.3 hr East of Sun

1Sper #7 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

UVOT unknown image

unknown image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

Image of the SPER data

There are 16 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
0.1′′317.33767-63.98119GCN #12284GRB 110818A: Optical afterglow and redshift from VLT/X-shooterVizier logo
0.4′′317.33780-63.98130GCN #12283GRB 110818A: Swift-XRT refined AnalysisVizier logo
1.1′′317.33820-63.98140GCN #12279GRB 110818A: Swift detection of a burstVizier logo
1.2′′317.33705-63.98105GCN #12285GRB 110818A: Enhanced Swift-XRT positionVizier logo
55.8′′317.37300-63.98100GCN #12281GRB 110818A� Swift-BAT refined analysisVizier logo

There are 12 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
135.3317.4170-63.9670IRAS F21055-6410Query 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
73.1317.3334-64.0014B2=20.5, R1=19.9USNO-B1Query vizier around this object
104.8317.3009-64.0054B2=19.8, I=18.6, R2=21.4USNO-B1Query vizier around this object
122.8317.3578-64.0142B2=19.2, I=18.2, R1=18.5, R2=18.6USNO-B1Query vizier around this object
136.3317.4171-63.9667NEDQuery vizier around this object
149.3317.2473-63.9691B2=18.6, I=18.5, R1=18.4USNO-B1Query vizier around this object
158.9317.2874-64.0194B=19.1, R2=17.9, i=17.1SSSQuery vizier around this object
169.1317.3063-63.9363R1=20.3, R2=20.4USNO-B1Query vizier around this object
169.7317.3928-64.0217B2=20.2, R2=19.8USNO-B1Query vizier around this object
170.2317.2686-64.0175B2=15.0, I=13.3, R1=13.6, R2=13.7USNO-B1Query vizier around this object
173.0317.2760-64.0209B=21.4SSSQuery vizier around this object


There are 18 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
12.5317.3316-63.9834B2=19.8, I=18.7, R1=19.2, R2=19.0USNO-B1Query vizier around this object
23.7317.3464-63.9758B2=19.2, I=18.2, R1=19.1, R2=19.2USNO-B1Query vizier around this object
26.7317.3235-63.9853B2=19.1, I=18.3, R1=18.9, R2=18.9USNO-B1Query vizier around this object
28.0317.3297-63.9881B2=18.8, I=18.8, R1=18.7, R2=18.4USNO-B1Query vizier around this object
30.7317.3183-63.9806B2=19.6, R1=20.0, R2=20.0USNO-B1Query vizier around this object
37.3317.3361-63.9915B2=20.7, R2=21.9USNO-B1Query vizier around this object
40.3317.3229-63.9903B2=18.5, I=15.2, R1=16.2, R2=16.1USNO-B1Query vizier around this object
40.4317.3228-63.9903h=13.6, j=14.2, k=13.42MASSQuery vizier around this object
40.9317.3546-63.9726h=15.6, j=16.4, k=15.32MASSQuery vizier around this object
40.9317.3544-63.9725B2=20.3, I=17.9, R1=19.4, R2=19.2USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 128 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.