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Swift Trigger: 868427

Presumed name: GRB 181023A

Back to trigger list.

BAT 16h 33m 18.96s, +19° 33′ 50.4″
position:(248.329, +19.564 ± 180″)
XRT 16h 33m 18.98s, +19° 34′ 12.0″
position:(248.3291, 19.5700 ± 2.1″)
UVOT No position available.
Galactic NHI:4.99×100 cm-2
Galactic E(B-V):0.058 mag
Best RA:16h 33m 18.98s= 248.3291 d
Best Dec:+19° 34′ 12.0″= 19.5700 d
Gal Lat:38.91
Gal Long:36.95
Sun angle:50.81°, -2.7 hr East of Sun

1Sper #5 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.


SPER results page for this trigger.

Image of the SPER data

There are 9 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
2.6′′248.3287119.57061GCN #23369GRB 181023A: Enhanced Swift-XRT positionVizier logo
5.5′′248.3297919.57139GCN #23366GRB 181023A: Swift detection of a burstVizier logo
45.1′′248.3225019.58089GCN #23377GRB 181023A: Swift-BAT refined analysis Vizier 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
65.8248.312419.57922MASS J16331496+1934454B=16.4, G=15.2291, H=13.023, J=13.605, K=12.934, R=14.8Query vizier around this object
95.2248.322319.5444GPM 248.322193+19.544644B=13.5, G=12.8893, H=11.666, J=11.908, K=11.611, V=13.0Query vizier around this object
105.2248.307219.59072MASS J16331374+1935268B=16.2, G=15.5911, H=14.061, J=14.395, K=14.012, R=15.1Query vizier around this object
110.5248.325419.6005GPM 248.325384+19.600486B=15.1, G=14.6163, H=13.163, J=13.471, K=13.079, V=14.8Query vizier around this object
140.5248.320219.6081Pul -3 1310387B=16.6, G=16.6579, H=14.556, J=15.062, K=14.500Query vizier around this object
150.6248.291219.59182MASS J16330989+1935307B=16.6, G=16.4421, H=14.597, J=14.986, K=14.509Query vizier around this object
159.2248.368219.5455GPM 248.368155+19.545502B=15.3, G=14.4325, H=12.615, J=13.092, K=12.568, V=14.7Query vizier around this object
191.8248.337719.62272MASS J16332104+1937217B=17.0, G=16.5683, H=15.017, J=15.399, K=14.971, R=16.1Query vizier around this object
198.5248.332319.62512MASS J16331974+1937303B=16.3, G=15.6424, H=14.203, J=14.550, K=14.170, R=15.1Query vizier around this object
198.7248.385119.5538WISEA J163332.35+193313.4G=16.3766, H=13.104, J=13.606, K=12.861Query vizier around this object

There are 10 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
2.3248.329719.5697R=21.5, g=22.6, i=21.5, u=22.6, z=21.9SDSSQuery vizier around this object
10.0248.329919.5727R=21.2, g=23.1, i=20.6, u=23.6, z=20.0SDSSQuery vizier around this object
16.6248.332719.5731R=21.8, g=22.5, i=21.5, u=23.9, z=21.1SDSSQuery vizier around this object
23.2248.322519.5681NEDQuery vizier around this object
27.6248.337119.5684R=23.0, g=23.6, i=22.0, u=23.5, z=22.2SDSSQuery vizier around this object
31.7248.335119.5632R=22.9, g=23.3, i=22.9, u=22.6, z=21.5SDSSQuery vizier around this object
33.3248.325219.5615R=25.0, g=26.4, i=23.7, u=24.0, z=20.5SDSSQuery vizier around this object
35.7248.329519.5799R=22.7, g=23.1, i=23.0, u=23.5, z=21.8SDSSQuery vizier around this object
37.5248.336719.5625NEDQuery vizier around this object
39.0248.319719.5762R=22.6, g=24.7, i=22.3, u=24.3, z=22.6SDSSQuery vizier around this object


There are 352 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
12.8248.330119.5666I=19.0, R=19.4, g=20.5, u=22.9, z=18.9SDSSQuery vizier around this object
13.0248.330119.5665B1=21.6, B2=20.8, I=18.5, R1=19.1, R2=19.2USNO-B1Query vizier around this object
23.2248.322619.5680h=14.6, j=15.3, k=14.42MASSQuery vizier around this object
23.2248.322619.5679I=17.0, R=17.6, g=19.1, u=22.0, z=16.6SDSSQuery vizier around this object
23.3248.322619.5680B1=20.3, B2=19.4, I=16.6, R1=17.2, R2=17.4USNO-B1Query vizier around this object
25.0248.325419.5760I=20.6, R=21.2, g=22.7, u=25.5, z=20.0SDSSQuery vizier around this object
25.8248.332419.5635I=21.4, R=22.7, g=24.1, u=25.0, z=21.0SDSSQuery vizier around this object
27.8248.334419.5759I=21.7, R=21.8, g=22.2, u=22.9, z=21.8SDSSQuery vizier around this object
28.6248.322219.5655I=20.1, R=21.3, g=22.6, u=23.8, z=19.5SDSSQuery vizier around this object
31.5248.321119.5745I=21.9, R=23.7, g=24.9, u=24.3, z=21.2SDSSQuery vizier around this object

Queried USNO-B1, SDSS, 2MASS.

There are 392 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.