Skip banner and navigation tools.

Home > GRB region information > 735326

Swift Trigger: 735326

Presumed name: GRB 170127A

Back to trigger list.

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

BAT	11h 37m 20.64s, -45° 51′ 07.2″
position:	(174.336, -45.852 ± 180″)
XRT	11h 37m 26.40s, -45° 50′ 08.9″
position:	(174.3600, -45.8358 ± 2.2″)
UVOT	No position available.
Galactic NHI:	6.30×100 cm-2
Galactic E(B-V):	0.093 mag

Best RA:	11h 37m 26.40s	= 174.3600 d
Best Dec:	-45° 50′ 08.9″	= -45.8358 d
Gal Lat:	15.13
Gal Long:	289.69
Sun angle:	104.29°, 9.0 hr West

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

Blink images with DSS (link via GSFC)

---

XRT SPER data

SPER results page for this trigger.

There are 10 SPER messages, and 1 objects have been found

• • Object 1 - enhanced position.
  • RA (J2000) : 11 37 26.41 (-45.8358)
  • Dec (J2000): -45 50 08.7 ( -45.83570)
  • Error (90%): 2.2
  • Counts in Source: 131

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′′	174.36000	-45.83580		GCN #20539	GRB 170127A: Prompt enhanced Swift-XRT position
0.9′′	174.35970	-45.83565		GCN #20548	GRB 170127A: Enhanced Swift-XRT position
1.0′′	174.35975	-45.83603		GCN #20538	GRB 170127A: Swift detection of a burst
62.2′′	174.38167	-45.82739		GCN #20565	GRB 170127A: 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
106.8	174.3272	-45.8169	UCAC2 12208853	B=14.133, H=8.42, I=10.49, J=9.238, K=8.133, R=12.10, V=12.537, g=13.263, i=11.046, r=11.911

* 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
10.1	174.3565	-45.8344		I=18.7, R1=20.5	USNO-B1
36.2	174.3555	-45.8454		B2=20.3, I=18.2, R1=18.6, R2=18.9	USNO-B1
40.6	174.3741	-45.8302		B=21.3, R2=19.3, i=18.4	SSS
40.9	174.3514	-45.8261		B2=21.1, R1=19.9, R2=19.7	USNO-B1
44.7	174.3537	-45.8242		B2=19.8, I=18.2, R1=18.4, R2=19.1	USNO-B1
44.7	174.3536	-45.8242		B=19.7, R2=19.0, i=18.3	SSS
45.5	174.3425	-45.8389			NED
51.1	174.3425	-45.8286		B=20.4, R2=19.1, i=18.5	SSS
53.7	174.3416	-45.8435		B2=21.7, R1=20.3	USNO-B1
54.5	174.3571	-45.8508			NED

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

There are 97 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
15.4	174.3637	-45.8324	B2=20.1, I=18.6, R1=19.0, R2=19.0	USNO-B1
16.9	174.3533	-45.8354	B2=20.7, R1=19.7, R2=19.6	USNO-B1
18.8	174.3667	-45.8335	B2=19.1, I=17.9, R1=18.1, R2=18.6	USNO-B1
21.7	174.3668	-45.8321	B2=20.5, I=17.9, R1=19.2, R2=19.2	USNO-B1
23.6	174.3550	-45.8414	B2=18.1, I=17.1, R1=17.2, R2=17.3	USNO-B1
23.8	174.3549	-45.8414	h=15.8, j=16.4, k=15.7	2MASS
31.1	174.3565	-45.8275	h=14.6, j=15.2, k=14.3	2MASS
31.2	174.3565	-45.8275	B2=19.4, I=16.4, R1=17.2, R2=17.6	USNO-B1
31.6	174.3500	-45.8305	B2=18.2, I=16.6, R1=16.8, R2=17.0	USNO-B1
31.6	174.3716	-45.8325	B2=18.8, I=17.7, R1=17.7, R2=18.1	USNO-B1

Queried USNO-B1, SDSS, 2MASS.

There are 382 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.