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Swift Trigger: 766081

Presumed name: GRB 170803A

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BAT 11h 39m 48.00s, -16° 18′ 39.6″
position:(174.950, -16.311 ± 180″)
XRT 11h 39m 44.11s, -16° 18′ 36.4″
position:(174.9338, -16.3101 ± 2.0″)
UVOT 11h 39m 44.11s, -16° 18′ 37.8″
position:(174.9338, -16.3105 ± 0.8″)
Galactic NHI:3.10×100 cm-2
Galactic E(B-V):0.041 mag
Best RA:11h 39m 44.11s= 174.9338 d
Best Dec:-16° 18′ 37.8″= -16.3105 d
Gal Lat:43.21
Gal Long:279.02
Sun angle:52.73°, -2.7 hr East of Sun

1Sper #9 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 u image

u image

UVOT white image

white image

UVOT white image

white image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

Image of the SPER data

There are 14 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′′174.93379-16.31053GCN #21405GRB 170803A: Swift detection of a burst with an optical counterpartVizier logo
0.2′′174.93379-16.31056GCN #21411GRB 170803A: Swift/UVOT DetectionVizier logo
2.5′′174.93433-16.31003GCN #21407GRB 170803A: Enhanced Swift-XRT positionVizier logo
44.6′′174.94667-16.31164GCN #21412GRB 170803A: 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
35.1174.9254-16.3046B=22.2SSSQuery vizier around this object
35.4174.9436-16.3073B2=22.0, I=18.4USNO-B1Query vizier around this object
48.9174.9475-16.3068B=21.0, R2=20.2SSSQuery vizier around this object
52.0174.9312-16.2959B=22.2, i=17.2SSSQuery vizier around this object
53.6174.9183-16.3102B=22.3SSSQuery vizier around this object
68.9174.9321-16.2914NEDQuery vizier around this object
73.2174.9388-16.3299B=21.8, R2=20.3SSSQuery vizier around this object
73.8174.9321-16.2897B2=20.8, R2=19.4USNO-B1Query vizier around this object
79.4174.9559-16.3041B=21.6, R2=20.6SSSQuery vizier around this object
87.3174.9092-16.3046B=21.9SSSQuery vizier around this object


There are 42 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
28.3174.9313-16.3176B1=18.4, B2=18.1, I=17.3, R1=16.9, R2=17.2USNO-B1Query vizier around this object
28.9174.9404-16.3051B2=20.4, R2=20.1USNO-B1Query vizier around this object
29.1174.9312-16.3178h=16.0, j=16.3, k=15.42MASSQuery vizier around this object
29.4174.9406-16.3150h=14.6, j=15.2, k=14.22MASSQuery vizier around this object
29.4174.9407-16.3149B2=20.8, I=16.8, R1=19.4, R2=18.7USNO-B1Query vizier around this object
38.9174.9298-16.3000B2=21.7, R2=20.1USNO-B1Query vizier around this object
46.9174.9357-16.3230B1=17.1, B2=17.1, I=15.3, R1=15.2, R2=15.9USNO-B1Query vizier around this object
47.0174.9357-16.3230h=14.1, j=14.7, k=14.02MASSQuery vizier around this object
47.6174.9474-16.3080B1=23.1, B2=20.3, R1=20.3, R2=20.2USNO-B1Query vizier around this object
52.3174.9315-16.2957B2=21.6, I=17.9USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 76 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.