Skip banner and navigation tools.

Home > GRB region information > 1002158

Swift Trigger: 1002158

Presumed name: GRB 201027A

Back to trigger list.

Related pages: Burst Analyser | Enhanced position | Light curve | Spectrum | Image | XRT Catalogue entry | Download obs data | GCN Notices

BAT	10h 23m 53.76s, -05° 30′ 53.6″
position:	(155.974, -5.5149 ± 180″)
XRT	10h 23m 52.80s, -05° 30′ 36.4″
position:	(155.9700, -5.5101 ± 2.3″)
UVOT	No position available.
Galactic NHI:	4.06×100 cm-2
Galactic E(B-V):	0.043 mag

Best RA:	10h 23m 52.80s	= 155.9700 d
Best Dec:	-05° 30′ 36.4″	= -5.5101 d
Gal Lat:	41.66
Gal Long:	249.82
Sun angle:	55.52°, 3.72 hr West

¹Sper #4 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.

---

XRT SPER data

SPER results page for this trigger.

There are 12 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 10 23 52.80 (-5.5101)
  • Dec (J2000): -05 30 36.2 ( -5.50919)
  • Error (90%): 2.0
  • Counts in Source: 394

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	Dec	Date reported	Source	Misc	Query
0.0′′	155.97000	-5.51010		GCN #28788	GRB 201027A: Swift detection of a burst
0.9′′	155.96975	-5.51003		GCN #28792	GRB 201027A: Enhanced Swift-XRT position
22.7′′	155.97400	-5.51500		GCN #28787	Swift GRB201027.05: Global MASTER-Net observations report
69.2′′	155.95417	-5.49911		GCN #28801	GRB 201027A: Swift-BAT refined analysis

---

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).

SIMBAD

	RA*	Dec*	SIMBAD name		Query
136.3	155.9850	-5.4753	2dFGRS TGN098Z007	B=18.503, R=17.348
170.4	156.0162	-5.4990	TYC 4911-891-1	B=12.03, G=11.3348, H=10.401, J=10.594, K=10.424, V=11.68
179.6	156.0187	-5.5218	LCRS B102133.3-051605

There are 3 SIMBAD objects within the position error. The full list is here.

* RA/Dec in equinox J2000

X-ray sources

	RA*	Dec*		Source table2	Observatory	Query

Queried the X-ray MASTER catalogue.

* RA/Dec in equinox J2000

¹Energy band for count-rate is mission specific.

Galaxies

	RA*	Dec*	Redshift		Catalogue	Query
14.3	155.9658	-5.5094			NED
14.4	155.9660	-5.5094		R1=19.7, R2=20.0	USNO-B1
27.8	155.9621	-5.5108			NED
29.8	155.9646	-5.5039			NED
30.6	155.9646	-5.5167			NED
31.9	155.9696	-5.5011			NED
34.6	155.9746	-5.5186			NED
36.5	155.9738	-5.5007		B1=20.7, B2=20.8, R1=20.0	USNO-B1
36.7	155.9733	-5.5003			NED
41.0	155.9733	-5.5208			NED

Queried APM-N, SDSS, PSCz, SSS, NED, 2MASSX, USNO-B1.

There are 180 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

Stars

	RA*	Dec*		Catalogue	Query
22.6	155.9650	-5.5139	B1=20.5, B2=20.4, I=18.6, R1=19.9, R2=19.7	USNO-B1
41.1	155.9735	-5.5210	h=13.4, j=14.1, k=13.2	2MASS
41.1	155.9735	-5.5210	B1=18.2, B2=18.0, I=15.0, R1=15.8, R2=16.1	USNO-B1
48.6	155.9610	-5.5202	B1=20.1, B2=19.4, I=18.4, R1=18.7, R2=18.6	USNO-B1
50.1	155.9662	-5.4967	I=18.4, R1=19.5, R2=19.2	USNO-B1
53.9	155.9722	-5.5249	h=13.6, j=13.8, k=13.3	2MASS
54.0	155.9723	-5.5249	B1=15.5, B2=15.7, I=14.2, R1=14.1, R2=14.6	USNO-B1
68.5	155.9528	-5.5183	B1=20.5, B2=20.8, R1=20.0, R2=19.7	USNO-B1
69.2	155.9887	-5.5053	B1=20.2, B2=19.4, I=18.1, R1=18.2, R2=18.5	USNO-B1
72.4	155.9899	-5.5065	B1=20.9, B2=20.7, I=18.7, R2=19.4	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 78 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.