4U 1538-52 History from Nov 21, 2015 to Dec 14, 2018

4U 1538-52 Short Frequency History

4U 1538-52 Full History

4U 1538-52 Full History

Fits Version of Full History: 4U 1538-52


4U 1538-52

The parameters below are used for this source in the GBM epoch-folding monitor

Source Monitor Parameters
RA
235.5971 deg
Decl
-52.3861 deg
Orbital Parameters
Orbital Period
3.7283749 days
Period Deriv.
0.0000E+00 days/day
Tπ/2
2451442.48900 (JED)
axsin(i)
56.600 light-sec
Long. of periastron
64.00 deg
Eccentricity
0.1740
Egress
0.08
Ingress
0.92

Notes:

Orbit elements from Clark, 2000, ApJ, 542, L131, with corrected epoch and orbital period. Eclipse phases from Rubin et al. 1997.


Modification date: 14 Dec, 2018

Author Valerie Connaughton
Responsible Manager Stephen Elrod
Site Curator Valerie Connaughton