Skip banner and navigation tools.

Home > GRB region information > 652334

Swift Trigger: 652334

Presumed name: GRB 150817A

Back to trigger list.

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

BAT	16h 38m 34.32s, -12° 03′ 57.6″
position:	(249.643, -12.066 ± 180″)
XRT	16h 38m 31.92s, -12° 03′ 10.8″
position:	(249.6330, -12.0530 ± 2.4″)
UVOT	No position available.
Galactic NHI:	1.43×100 cm-2
Galactic E(B-V):	0.482 mag

Best RA:	16h 38m 31.92s	= 249.6330 d
Best Dec:	-12° 03′ 10.8″	= -12.0530 d
Gal Lat:	22.44
Gal Long:	5.19
Sun angle:	105.88°, -6.9 hr East of Sun

¹Sper #1 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

Blink images with DSS (link via GSFC)

---

XRT SPER data

SPER results page for this trigger.

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

• • Object 1
  • RA (J2000) : 16 38 32.04 ( 249.63352)
  • Dec (J2000): -12 03 12.1 ( -12.05336)
  • Error (90%): 3.795"
  • Counts in Source: 89

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
1.1′′	249.63325	-12.05319		GCN #18144	GRB 150817A: RATIR Optical Afterglow Candidate
2.2′′	249.63350	-12.05336		GCN #18143	GRB 150817A: Swift detection of a burst
6.1′′	249.63129	-12.05267		GCN #18145	GRB 150817A: Continued RATIR Observations� Revised Candidate
6.8′′	249.63108	-12.05292		GCN #18146	GRB 150817A: Enhanced Swift-XRT position
10.7′′	249.63458	-12.05047		GCN #18148	GRB 150817A: 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
58.4	249.6492	-12.0494	PMN J1638-1203
176.3	249.6700	-12.0200	OHIO S -159.8

* 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
30.7	249.6248	-12.0559		I=18.9, R2=19.8	USNO-B1
31.2	249.6395	-12.0589		B=21.3, R2=19.7, i=19.3	SSS
48.8	249.6268	-12.0409		B=21.8	SSS
51.2	249.6324	-12.0672		B=17.7, R2=17.0, i=15.8	SSS
51.4	249.6323	-12.0673		B1=17.7, I=15.9, R1=15.6, R2=16.0	USNO-B1
55.3	249.6173	-12.0543		B1=19.6, B2=18.0, I=15.2, R1=16.1, R2=16.2	USNO-B1
59.2	249.6492	-12.0494			NED
61.4	249.6161	-12.0571		B=21.2, R2=19.8, i=19.3	SSS
62.0	249.6191	-12.0424		B=22.0	SSS
62.7	249.6196	-12.0645		B=19.9, R2=19.0, i=18.5	SSS

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

There are 66 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
8.0	249.6317	-12.0512	I=18.6, R2=20.1	USNO-B1
22.8	249.6265	-12.0534	h=15.4, j=16.0, k=15.3	2MASS
22.9	249.6265	-12.0534	B1=19.7, B2=18.5, I=17.1, R1=17.7, R2=17.6	USNO-B1
29.1	249.6337	-12.0450	h=12.7, j=13.1, k=12.6	2MASS
29.1	249.6337	-12.0449	B1=16.7, B2=16.0, I=14.0, R1=14.8, R2=14.7	USNO-B1
30.4	249.6393	-12.0588	B1=20.4, B2=20.4, I=18.5, R1=19.3, R2=19.3	USNO-B1
31.9	249.6394	-12.0593	B2=21.0, R1=19.3	USNO-B1
39.7	249.6270	-12.0437	B2=21.6, R2=19.7	USNO-B1
44.7	249.6205	-12.0507	B1=20.4, B2=19.7, I=17.9, R1=18.2, R2=19.1	USNO-B1
50.2	249.6323	-12.0669	h=13.9, j=14.4, k=13.7	2MASS

Queried USNO-B1, SDSS, 2MASS.

There are 224 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.