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Swift Trigger: 349510

Presumed name: GRB 090418A

Back to trigger list.

BAT 17h 57m 20.16s, +33° 24′ 32.4″
position:(269.334, +33.409 ± 180″)
XRT 17h 57m 15.10s, +33° 24′ 19.8″
position:(269.3129, 33.4055 ± 2.1″)
UVOT No position available.
Galactic NHI:0.00×100 cm-2
Galactic E(B-V):0.043 mag
Best RA:17h 57m 15.10s= 269.3129 d
Best Dec:+33° 24′ 19.8″= 33.4055 d
Gal Lat:
Gal Long:
Sun angle:not found

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

UVOT unknown image

unknown image

Blink images with DSS (link via GSFC)


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
0.0′′269.3129033.40550GCN #9149GRB 090418: Swift detection of a burst with optical afterglowVizier logo
1.2′′269.3131533.40577GCN #9166VLA radio detection of GRB 090418Vizier logo
1.3′′269.3131333.40581GCN #9211GRB090418A Rc-band photometryVizier logo
1.6′′269.3132133.40586GCN #9175GRB 090418A: Swift/UVOT ObservationsVizier logo
1.6′′269.3132133.40586GCN #9148GRB 090418 OA candidateVizier logo
1.6′′269.3132133.40587GCN #9179GRB 090418A: optical observationsVizier logo
2.3′′269.3132933.40606GCN #9163GRB 090418: Swift XRT refined analysisVizier logo
2.3′′269.3132933.40606GCN #9154GRB 090418: Enhanced Swift-XRT positionVizier logo
21.8′′269.3200033.40678GCN #9157GRB 090418: Swift-BAT refined analysisVizier logo
183.1′′269.3268733.35600GCN #32378Fermi GRB 220711B: Global MASTER-Net observations report Vizier logo

There are 18 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
1.6269.313233.4059GRB 090418AQuery vizier around this object
116.6269.351333.4008HD 163948B=7.790, H=4.842, J=5.282, K=4.762, U=8.380, V=6.880Query 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
1.2269.312933.4058NEDQuery vizier around this object
3.8269.314133.4052B=21.8, R=20.0APM-NQuery vizier around this object
4.3269.314333.4055B1=20.9, B2=20.8, R2=20.2USNO-B1Query vizier around this object
12.2269.313233.4021B=21.2, R=20.0APM-NQuery vizier around this object
20.1269.318033.4019B=21.3, R=18.9APM-NQuery vizier around this object
39.6269.324933.4009B1=20.7, R2=17.9USNO-B1Query vizier around this object
41.4269.300333.4009B2=20.9, I=18.7, R1=19.5USNO-B1Query vizier around this object
41.7269.299933.4014B=22.0, R=20.0APM-NQuery vizier around this object
60.9269.310533.4223B2=20.8, I=17.7, R1=18.7, R2=19.1USNO-B1Query vizier around this object
61.5269.332633.4007B1=20.4, I=16.9, R1=18.0USNO-B1Query vizier around this object


There are 93 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
20.4269.315833.4004B1=20.4, B2=20.7, R2=19.8USNO-B1Query vizier around this object
20.6269.317433.4098h=16.0, j=16.6, k=16.02MASSQuery vizier around this object
20.6269.317233.4100B1=18.6, B2=18.3, I=17.2, R1=17.4, R2=17.2USNO-B1Query vizier around this object
20.8269.317933.4015B1=20.8, B2=19.7, R1=18.9, R2=20.0USNO-B1Query vizier around this object
27.1269.319633.4004B2=20.3, I=18.6, R1=18.3USNO-B1Query vizier around this object
31.8269.321433.4002B2=20.1, I=18.5, R1=19.8, R2=19.4USNO-B1Query vizier around this object
31.8269.307633.3978B2=20.9, I=18.8USNO-B1Query vizier around this object
34.7269.322633.4003B1=20.8, B2=19.5, I=18.0, R1=19.5, R2=19.3USNO-B1Query vizier around this object
42.8269.310133.3938B1=17.3, B2=17.1, I=14.5, R1=15.3, R2=15.2USNO-B1Query vizier around this object
43.1269.310133.3938h=12.5, j=13.2, k=12.32MASSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 170 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.