GRB 260127B: Swift observation summary

Mission:	Fermi/GBM
GRB RA:	192.470°
GRB Dec:	+66.750°
GRB Err:	5 arcsec
T0:	2026-01-27 20:02:32 UT
Galactic:	123.17° +50.38°
Galactic N_H:	2.02× 10²⁰ cm^-2
Galactic E(B-V):	0.02059977

Sun distance:	117.56°
Sun angle:	7.84 [hr](West of Sun)
Moon distance:	82.72°
Visibility of this field.

Data analysed so far:

ObsID: 00021900001 with 1.0 ks exposure.

About ToO analysis.

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Sources found so far

So far 1 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Fermi/GBM pos	Exposure	Notes	Vizier
1 [details]	12h 50m 24.42s192.60173°	+66° 55′ 26.0″66.92390°	8.9′′	Good	10.9′	985 s	Matches known X-ray source: LSXPS J125024.0+665524 (from LSXPS), 9.8″ away. Matches SIMBAD source: V* OV Dra, 11.2″ away.
Mean XRT rate: 1.6 (+0.6, -0.5) ×10^-2 ct s^-1 Peak XRT rate: 1.6 (+0.6, -0.5) ×10^-2 ct s^-1 RASS PSPC 3-σ upper limit: 0.0×10⁰ ct s^-1 (XRT equiv count-rate) Mean XRT flux: 7.7 (+2.9, -2.4) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 7.7 (+2.9, -2.4) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]

¹ Radius, 90% confidence.
² Indicates how likely the source is to be real. See the 1SXPS documentation.
^* The position was enhanced using astrometry derived from the Swift UVOT.
^† The position was astrometrically corrected using the XRT sources and the 2MASS catalogue.

Image

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FITS image.

Exposure map

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FITS exposure map.