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Swift Trigger: 1247745

Presumed name: GRB 240809A

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BAT 15h 50m 12.24s, -02° 19′ 15.6″
position:(237.551, -2.321 ± 180″)
XRT 15h 50m 11.14s, -02° 19′ 04.1″
position:(237.5464, -2.3178 ± 12.0″)
UVOT 15h 50m 10.51s, -02° 19′ 03.0″
position:(237.5438, -2.3175 ± 0.6″)
Galactic NHI:7.67×1020 cm-2
Galactic E(B-V):0.280 mag
Best RA:15h 50m 10.51s= 237.5438 d
Best Dec:-02° 19′ 03.0″= -2.3175 d
Gal Lat:37.86
Gal Long:5.81
Sun angle:98.51°, -6.5 hr East of Sun

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 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).

SIMBAD

RA*Dec*SIMBAD name Query
178.8237.5000-2.3000[RLM94] 1547-021Query vizier around this object
195.7237.5308-2.3699AG-02 955B=11.02, G=9.662189, H=7.650, I=8.800, J=8.160, K=7.512, V=9.916Query 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.

Galaxies

RA*Dec*Redshift CatalogueQuery
17.3237.5429-2.3146R=22.2, g=22.8, i=21.7, u=22.0, z=20.8SDSSQuery vizier around this object
18.2237.5433-2.3125NEDQuery vizier around this object
21.6237.5453-2.3237B=21.9, R=19.5APM-NQuery vizier around this object
23.8237.5371-2.3167NEDQuery vizier around this object
24.1237.5450-2.3242NEDQuery vizier around this object
26.7237.5467-2.3106NEDQuery vizier around this object
28.1237.5467-2.3100R1=17.7, R2=20.6USNO-B1Query vizier around this object
28.6237.5543-2.3190B=22.1, R2=19.8, i=19.1SSSQuery vizier around this object
28.9237.5543-2.3192R=19.7, g=20.8, i=19.2, u=22.2, z=18.6SDSSQuery vizier around this object
32.7237.5541-2.3129R=22.4, g=23.4, i=21.7, u=24.8, z=21.0SDSSQuery vizier around this object

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

There are 485 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
14.4237.5502-2.3189I=21.0, R=21.4, g=22.7, u=23.5, z=20.4SDSSQuery vizier around this object
20.4237.5449-2.3232I=22.1, R=24.2, g=24.1, u=25.1, z=21.7SDSSQuery vizier around this object
22.4237.5451-2.3239B2=20.6, R2=19.7USNO-B1Query vizier around this object
22.6237.5453-2.3240I=17.8, R2=19.8USNO-B1Query vizier around this object
22.8237.5452-2.3240h=15.4, j=16.1, k=15.02MASSQuery vizier around this object
23.0237.5453-2.3241I=18.5, R=20.1, g=21.7, u=23.7, z=17.5SDSSQuery vizier around this object
23.6237.5452-2.3114B1=20.5, B2=20.7, R2=20.6USNO-B1Query vizier around this object
23.7237.5421-2.3128B1=20.7, B2=20.1, I=18.6, R2=19.2USNO-B1Query vizier around this object
25.6237.5446-2.3109I=20.3, R=20.6, g=21.2, u=21.9, z=20.1SDSSQuery vizier around this object
26.2237.5466-2.3105I=19.6, R=20.7, g=22.4, u=24.7, z=18.9SDSSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 383 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.