The Neil Gehrels Swift Observatory

General Information:

Swift Name:SWIFT J2129.9+1209
RA:322.4927 (J2000)
Dec:12.1709 (J2000)
S/N:57.33
Counterpart Name:4U 2129+12
Ctpt RA:322.4929 (J2000)
Ctpt Dec:12.1674 (J2000)
Flux:81.63 (78.96, 84.38) × 10-12 ergs s-1 cm-2, (14-195 keV)
Gamma:2.54 (2.48, 2.60)
Chi2r:0.79
Redshift:NA
Luminosity:NA log[ergs s-1] (14-195 keV)
AS:1
Class:14
Type:LMXB

BAT 157-Month Lightcurve:

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J2129.9+1209

Crab Weighted Monthly Mosaic Lightcurve for SWIFT J2129.9+1209

Lightcurve:

BAT 157-Month Spectrum:

BAT Spectrum for SWIFT J2129.9+1209

BAT Spectrum for SWIFT J2129.9+1209

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