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Swift Trigger: 350184

Presumed name: GRB 090423

Back to trigger list.

BAT 09h 55m 34.80s, +18° 09′ 36.0″
position:(148.895, +18.160 ± 180″)
XRT 09h 55m 33.10s, +18° 08′ 58.9″
position:(148.8879, 18.1497 ± 2.3″)
UVOT No position available.
Galactic NHI:0.00×100 cm-2
Galactic E(B-V):0.029 mag
Best RA:09h 55m 33.10s= 148.8879 d
Best Dec:+18° 08′ 58.9″= 18.1497 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′′148.8879018.14970GCN #9198GRB 090423: Swift detection of a burstVizier logo
1.8′′148.8882918.14936GCN #9322GRB 090423: 250 GHz upper limit for a z=8.2 GRB with MAMBO-2 at the IRAM 30mVizier logo
1.8′′148.8882918.14936GCN #9205GRB 090423: Enhanced Swift-XRT positionVizier logo
3.0′′148.8887118.14939GCN #9202GRB 090423: UKIRT K-band observationsVizier logo
3.4′′148.8887518.14919GCN #9218GRB 090423: Near infrared observation at Okayama ObservatoryVizier logo
56.1′′148.8910018.16500GCN #9204GRB 090423: Swift-BAT refined analysisVizier logo

There are 11 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
1.8148.888318.1494GRB 090423Query vizier around this object
31.8148.897118.15112MASS J09553530+1809038H=13.97, J=14.52, K=13.77, g=19.276, i=16.549, r=17.785, u=22.16, z=15.911Query vizier around this object
152.2148.866318.1867TYC 1414-418-1B=11.7, H=8.469, J=8.987, K=8.351, V=10.8Query vizier around this object
170.0148.923418.1166HD 85947B=9.92, H=7.932, J=8.210, K=7.890, V=9.30Query vizier around this object

There are 4 SIMBAD objects within the position error. The full list is here.

* 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
0.2148.887918.1497NEDQuery vizier around this object
4.5148.887318.1508R=21.6, g=22.6, i=21.4, u=22.8, z=21.9SDSSQuery vizier around this object
4.5148.887118.1508Mag=22.8NEDQuery vizier around this object
9.5148.890218.1483R=24.3, g=25.6, i=23.8, u=24.7, z=20.5SDSSQuery vizier around this object
13.9148.885418.1467Mag=22.3NEDQuery vizier around this object
13.9148.885418.1467R=21.6, g=22.1, i=21.3, u=24.8, z=21.0SDSSQuery vizier around this object
22.6148.890418.1556Mag=25.3NEDQuery vizier around this object
22.6148.893318.1464Mag=22.2NEDQuery vizier around this object
24.2148.890818.1558B=19.1, R=20.0APM-NQuery vizier around this object
24.5148.887818.1565R=23.1, g=24.9, i=21.7, u=23.8, z=22.0SDSSQuery vizier around this object


There are 354 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
7.3148.887918.1477I=24.1, R=25.7, g=24.3, u=24.2, z=20.9SDSSQuery vizier around this object
22.5148.890518.1554I=23.6, R=22.8, g=25.4, u=25.2, z=22.1SDSSQuery vizier around this object
22.6148.893618.1464I=20.4, R=20.9, g=22.1, u=23.6, z=20.1SDSSQuery vizier around this object
25.9148.880418.1489I=23.7, R=24.9, g=24.8, u=24.5, z=20.8SDSSQuery vizier around this object
27.8148.881218.1453I=22.0, R=22.4, g=23.2, u=23.3, z=22.2SDSSQuery vizier around this object
31.6148.897018.1511I=16.5, R=17.8, g=19.3, u=22.2, z=15.9SDSSQuery vizier around this object
31.9148.897118.1512B1=20.4, B2=19.1, I=15.6, R1=17.8, R2=17.3USNO-B1Query vizier around this object
31.9148.897118.1511h=14.0, j=14.5, k=13.82MASSQuery vizier around this object
33.9148.883318.1414I=23.8, R=23.9, g=26.0, u=22.3, z=23.2SDSSQuery vizier around this object
35.6148.897418.1456B2=20.9, I=18.6, R1=19.8, R2=19.5USNO-B1Query vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 165 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.