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Swift Trigger: 1156572

Presumed name: GRB 230228A

Back to trigger list.

BAT 01h 13m 36.72s, +44° 29′ 20.4″
position:(18.403, 44.489 ± 180″)
XRT 01h 13m 30.78s, +44° 28′ 58.5″
position:(18.37824, 44.48293 ± 1.9″)
UVOT No position available.
Galactic NHI:7.56×1020 cm-2
Galactic E(B-V):0.078 mag
Best RA:01h 13m 30.78s= 18.37824 d
Best Dec:+44° 28′ 58.5″= 44.48293 d
Gal Lat:-18.21
Gal Long:127.07
Sun angle:62.70°, -2.5 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.


SPER results page for this trigger.

Image of the SPER data

There are 10 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
0.3′′18.3781344.48292GCN #33382GRB 230228A: Enhanced Swift-XRT positionVizier logo
0.5′′18.3780444.48289GCN #33380GRB 230228A: Miryang Arirang Astronomical Observatory (MAAO) 0.7-m telescope optical upper limitVizier logo
0.5′′18.3780444.48289GCN #33379GRB 230228A: Prompt enhanced Swift-XRT positionVizier logo
1.6′′18.3777644.48321GCN #33378GRB 230228A: Swift detection of a possibly short burstVizier logo
64.9′′18.3970044.49500GCN #33393GRB 230228A: Swift-BAT refined analysisVizier logo
133.2′′18.3973644.44853GCN #33383GRB 230228A: Mondy optical upper limitVizier logo

There are 13 matches in total. See the full table for details.

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).


RA*Dec*SIMBAD name Query
193.218.330644.4414BD+43 250B=9.72, G=9.218011, H=8.262, J=8.459, K=8.162, V=9.33Query 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
15.118.379244.4869NEDQuery vizier around this object
26.118.382544.4764NEDQuery vizier around this object
27.118.375844.4756NEDQuery vizier around this object
27.418.382144.4758NEDQuery vizier around this object
28.418.381744.4756NEDQuery vizier around this object
31.018.378944.4743B2=20.6, R1=18.2, R2=18.6USNO-B1Query vizier around this object
32.718.367944.4881NEDQuery vizier around this object
32.718.374544.4742B1=13.4, B2=12.6, I=11.1, R1=11.4, R2=11.8USNO-B1Query vizier around this object
33.918.374244.4739NEDQuery vizier around this object
36.618.390044.4772NEDQuery vizier around this object


There are 264 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
26.118.382744.4764h=14.5, j=14.8, k=14.42MASSQuery vizier around this object
27.118.375844.4756h=15.1, j=15.3, k=15.12MASSQuery vizier around this object
27.318.382044.4758B1=14.8, B2=14.5, I=13.1, R1=14.2, R2=14.1USNO-B1Query vizier around this object
28.418.381844.4754h=14.1, j=14.2, k=14.22MASSQuery vizier around this object
30.218.378344.4745B1=19.4, B2=19.9, R2=17.9USNO-B1Query vizier around this object
33.918.374244.4740h=10.8, j=11.1, k=10.72MASSQuery vizier around this object
35.918.390044.4775I=18.6, R2=19.2USNO-B1Query vizier around this object
44.918.360844.4839B2=21.5, I=18.4, R1=19.3, R2=19.1USNO-B1Query vizier around this object
45.218.361444.4792B1=19.8, B2=19.6, I=18.8, R1=17.9, R2=18.0USNO-B1Query vizier around this object
48.318.385844.4706h=15.7, j=16.4, k=15.72MASSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 196 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.