GRB 260111A: Swift observation summary

Mission:	Swift/BAT
GRB RA:	229.573°
GRB Dec:	+51.975°
GRB Err:	5.0 arcmin
T0:	2026-01-11 16:33:14 UT
Galactic:	85.20° +53.00°
Galactic N_H:	1.69× 10²⁰ cm^-2
Galactic E(B-V):	0.01727543

Sun distance:	91.99°
Sun angle:	4.23 [hr](West of Sun)
Moon distance:	70.47°
Visibility of this field.

Data analysed so far:

ObsID: 00021897001 with 2.8 ks exposure.

About ToO analysis.

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Sources found so far

So far 2 sources have been found in the XRT data. 1 sources match catalogued sources.

#	RA (J2000)	Dec (J2000)	Err₉₀¹	Detection Flag²	Dist from Swift/BAT pos	Exposure	Notes
1 [details]	15h 18m 32.89s229.63703°	+51° 54′ 56.7″51.91575°	3.5′′	Good	4.3′	4.1 ks	Matches known X-ray source: LSXPS J151832.4+515500 (from LSXPS), 3.2″ away. Matches SIMBAD source: 2MASS J15183280+5154570, 4.8″ away.
Mean XRT rate: 1.44 (±0.22) ×10^-2 ct s^-1 Peak XRT rate: 1.9 (±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: 4.1 (±0.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 5.4 (±1.3) ×10^-13 erg cm^-1s^-1 Products: Light curve \| Spectrum \| Enhanced position \| Expected serendipitous sources: ~0.00×10⁺⁰ [What is this?]
2 [details]	15h 18m 20.60s229.58581°	+51° 58′ 24.8″51.97356°	6.3′′	Good	0.5′	4.1 ks
Mean XRT rate: 5.2 (+2.3, -1.9) ×10^-3 ct s^-1 Peak XRT rate: 5.2 (+2.3, -1.9) ×10^-3 ct s^-1 RASS PSPC 3-σ upper limit: 7.6×10^-3 ct s^-1 (XRT equiv count-rate) Mean XRT flux: 1.6 (+0.7, -0.6) ×10^-13 erg cm^-1s^-1 Peak XRT flux: 1.6 (+0.7, -0.6) ×10^-13 erg cm^-1s^-1 Products: Spectrum \| 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.