The Neil Gehrels Swift Observatory

General Information:

Swift Name:SWIFT J1240.9+2735
RA:190.2419 (J2000)
Dec:27.6250 (J2000)
S/N:5.60
Counterpart Name:KUG 1238+278A
Ctpt RA:190.1934 (J2000)
Ctpt Dec:27.5650 (J2000)
Flux:6.80 (4.63, 9.37) × 10-12 ergs s-1 cm-2, (14-195 keV)
Gamma:2.38 (1.86, 3.07)
Chi2r:0.50
Redshift:0.0565
Luminosity:43.73 log[ergs s-1] (14-195 keV)
AS:1
Class:5
Type:Sy1.9

BAT 157-Month Lightcurve:

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1240.9+2735

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J1240.9+2735

Lightcurve:

BAT 157-Month Spectrum:

BAT Spectrum for SWIFT J1240.9+2735

BAT Spectrum for SWIFT J1240.9+2735

Data last modified: 15 Sep 2025
Page last modified: 03 Jun 2025