Coordinates

RA: 15^h57^m48^s.304
DEC: -54^∘24'53''.036
Position-uncertainty [arcsec]: 1.143 × 10⁰
Galactic-longitude [deg]: 327.94
Galactic-latitude [deg]: -0.86
Coordinate-Reference

Binary System

Alternative Name: H 1553-542
X-ray Type: BE,CL,HT,XP
Mean Distance [kpc]: 20.0^[1]
Distance Range [kpc]: 16.0 - 24.0^[1]
Hydrogen Column density [10²¹ cm⁻²]: 37.26

Compact Object

Orbital Period [d]: 30.6^[1]
Pulse Period [s]: 9.28^[1][2]
CRSF energy [keV]: 23-27^[1]
Chandra flux [10^-12 erg cm^-2 s^-1]:0.01 (0.5-7.0 keV)
Swift/XRT flux [10^-12 erg cm^-2 s^-1]:1633.0 (0.3-10.0 keV)

Optical Counterpart

Counterpart: not identified
Spectral Type: B1-2V^[1]
W1 [mag]: 11.629(0.008)
W2 [mag]: 11.575(0.006)