Coordinates

RA: 16^h39^m05^s.466
DEC: -46^∘42'12''.592
Position-uncertainty [arcsec]: 1.006 × 10⁰
Galactic-longitude [deg]: 338.0
Galactic-latitude [deg]: 0.08
Coordinate-Reference

Binary System

Alternative Name: AX J163904-4642
X-ray Type: CL,SG,XB,XP
Mean Distance [kpc]: 12.0^[1]
Distance Range [kpc]: 11.7 - 12.3^[1]
Hydrogen Column density [10²¹ cm⁻²]: 653.2

Compact Object

Orbital Period [d]: 4.24^{[1][2][3][4][5]}
Pulse Period [s]: 908.79^{[1][2][3][4][5]}
CRSF energy [keV]: 29^[1]
XMM-Newton flux [10^-12 erg cm^-2 s^-1]:12.98 - 45.74 (0.2-12.0 keV)
Chandra flux [10^-12 erg cm^-2 s^-1]:9.75 (0.5-7.0 keV)
Swift/XRT flux [10^-12 erg cm^-2 s^-1]:32.39 (0.3-10.0 keV)
Swift/BAT flux [10^-12 erg cm^-2 s^-1]:71.02 (14-195 keV)

Optical Counterpart

Counterpart: not identified
Spectral Type: BIV-V(OB)$^dag$^[1]

Comments

Alternative orbital period: 3.69 d , Superorbital period: 14.99 d

Other references

2001ApJS..134...77S