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Swift Trigger: 854578

Presumed name: GRB 180821A

Back to trigger list.

BAT 00h 31m 03.12s, -38° 37′ 08.4″
position:(7.763, -38.619 ± 180″)
XRT 00h 31m 09.20s, -38° 37′ 35.8″
position:(7.78834, -38.62661 ± 3.7″)
UVOT No position available.
Galactic NHI:2.01×100 cm-2
Galactic E(B-V):0.017 mag
Best RA:00h 31m 09.20s= 7.78834 d
Best Dec:-38° 37′ 35.8″= -38.62661 d
Gal Lat:-77.74
Gal Long:321.91
Sun angle:137.59°, 9.5 hr West

1Sper #2 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

No UVOT images are currently available.


XRT SPER data

SPER results page for this trigger.

Image of the SPER data

There are 2 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
0.0′′7.78833-38.62661GCN #23158GRB 180821A: Swift detection of a burstVizier logo
4.4′′7.78750-38.62764GCN #23168GRB 180821A: VLT observationsVizier logo
5.3′′7.79011-38.62713GCN #23162GRB 180821A: Enhanced Swift-XRT positionVizier logo
148.4′′7.73900-38.61200GCN #23166GRB 180821A: 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).

SIMBAD

RA*Dec*SIMBAD name Query
82.37.8146-38.6367LCRS B002848.7-385446Query 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
4.77.7879-38.6278Mag=19.7NEDQuery vizier around this object
30.87.7932-38.6189B=21.5SSSQuery vizier around this object
55.97.7904-38.6419Mag=19.0NEDQuery vizier around this object
56.07.7903-38.6421B=21.1, R2=19.1, i=18.2SSSQuery vizier around this object
60.17.7710-38.6363B=22.4SSSQuery vizier around this object
64.27.7654-38.6261Mag=19.0NEDQuery vizier around this object
64.37.7655-38.6262B2=20.4, R1=19.9, R2=23.2USNO-B1Query vizier around this object
65.27.7671-38.6342Mag=19.0NEDQuery vizier around this object
65.97.7766-38.6425B=21.8, R2=20.4SSSQuery vizier around this object
72.27.8122-38.6341B=22.4SSSQuery vizier around this object

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

There are 128 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
4.57.7876-38.6277B2=20.4, R1=19.9, R2=20.7USNO-B1Query vizier around this object
31.77.7936-38.6188B2=19.7, R1=19.8USNO-B1Query vizier around this object
40.27.7955-38.6363B2=20.3, R1=19.8USNO-B1Query vizier around this object
52.27.8065-38.6296R1=19.9, R2=23.3USNO-B1Query vizier around this object
55.67.7903-38.6420B2=20.5, I=18.8, R1=19.3, R2=19.2USNO-B1Query vizier around this object
65.87.7766-38.6424B2=19.6, R1=19.9, R2=20.7USNO-B1Query vizier around this object
77.27.7836-38.6055B2=20.1, R1=19.9, R2=20.6USNO-B1Query vizier around this object
81.77.7786-38.6480B2=19.9, R1=19.8, R2=23.9USNO-B1Query vizier around this object
82.67.8147-38.6366B2=19.7, I=17.9, R1=17.5, R2=17.9USNO-B1Query vizier around this object
87.77.7580-38.6210B2=20.6, R1=19.7, R2=20.2USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 58 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.