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Swift Trigger: 826428

Presumed name: GRB 180418A

Back to trigger list.

BAT 11h 20m 26.88s, +24° 57′ 21.6″
position:(170.112, 24.956 ± 180″)
XRT 11h 20m 28.94s, +24° 55′ 57.9″
position:(170.12059, 24.93276 ± 3.9″)
UVOT No position available.
Galactic NHI:1.02×100 cm-2
Galactic E(B-V):0.017 mag
Best RA:11h 20m 28.94s= 170.12059 d
Best Dec:+24° 55′ 57.9″= 24.93276 d
Gal Lat:69.48
Gal Long:213.94
Sun angle:130.05°, -9.6 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 white image

white image

Blink images with DSS (link via GSFC)


SPER results page for this trigger.

Image of the SPER data

There are 11 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′′170.1205924.93276GCN #22649GRB 180418A: Swift-XRT observationsVizier logo
3.3′′170.1215324.93309GCN #22650GRB 180418A: Enhanced Swift-XRT positionVizier logo
3.6′′170.1216724.93300GCN #22647GRB 180418A: KAIT Optical Afterglow CandidateVizier logo
3.9′′170.1217124.93311GCN #22665GRB 180418A: Swift/UVOT DetectionVizier logo
46.4′′170.1316724.92469GCN #22658GRB 180418A: Swift-BAT refined analysis Vizier logo
88.1′′170.1125024.95611GCN #22646GRB 180418A: Swift detection of a short burstVizier 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
10.9170.119224.93001.135000Mag=21.2NEDQuery vizier around this object
11.1170.119124.9300B=20.9, R=19.9APM-NQuery vizier around this object
13.4170.122924.9297Mag=25.5NEDQuery vizier around this object
16.5170.125624.9331R=22.3, g=23.3, i=22.5, u=22.9, z=22.9SDSSQuery vizier around this object
16.6170.125424.93310.242000Mag=22.6NEDQuery vizier around this object
24.7170.125724.9277R=24.5, g=25.0, i=25.5, u=24.1, z=20.6SDSSQuery vizier around this object
26.2170.112524.9339Mag=23.1NEDQuery vizier around this object
29.1170.112524.92940.695000Mag=22.6NEDQuery vizier around this object
29.4170.117524.94060.729000Mag=23.7NEDQuery vizier around this object
29.5170.126324.93920.320000Mag=23.0NEDQuery vizier around this object


There are 677 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
10.7170.119324.9300B1=20.7, B2=21.1, R2=19.9USNO-B1Query vizier around this object
10.8170.119324.9300I=20.8, R=20.9, g=21.1, u=21.3, z=20.8SDSSQuery vizier around this object
13.4170.122824.9296I=23.6, R=23.1, g=25.6, u=25.3, z=22.9SDSSQuery vizier around this object
39.1170.126324.9423I=21.0, R=21.2, g=22.0, u=23.0, z=20.4SDSSQuery vizier around this object
40.5170.132724.9305I=20.8, R=20.8, g=21.0, u=21.3, z=20.7SDSSQuery vizier around this object
43.2170.108324.9282I=25.0, R=22.9, g=25.5, u=25.4, z=23.4SDSSQuery vizier around this object
44.2170.133724.9296I=22.4, R=24.8, g=24.7, u=23.9, z=23.3SDSSQuery vizier around this object
48.0170.134024.9274B1=18.7, B2=18.9, I=15.4, R1=16.2, R2=16.3USNO-B1Query vizier around this object
48.0170.134024.9273h=13.9, j=14.5, k=13.72MASSQuery vizier around this object
48.2170.134124.9273I=16.1, R=16.8, g=18.2, u=20.6, z=15.8SDSSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 114 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.