Coordinates

RA: 04^h21^m42^s.723
DEC: +32^∘54'26''.939
Position-uncertainty [arcsec]: 1.004 × 10^-2
Galactic-longitude [deg]: 165.88
Galactic-latitude [deg]: -11.91
Coordinate-Reference

Binary System

Alternative Name: V518 Per
X-ray Type: XT, RP, BH, PSH
Mean Distance [kpc]: 2.49^[1]
Distance Range [kpc]: 2.3 - 2.65^[1]
Hydrogen Column density [10²² cm⁻²]: 0.2
^[1]
G-band Absorption [mag]: 0.7
^[1]

Compact Object

Mass[M_☉]: 2.7^[1]

Orbital Period [d]: 0.21216666666666664^[1]


soft energy band: 0.2-10.0 keV
soft-band flux [10^-12 erg cm^-2 s^-1]:0.01 - 4800.0
soft X-ray variability: 751255.5
hard energy band: 40.0-150.0 keV

Optical Counterpart

Gaia DR3 Name: 172650748928103552
Mass[M_☉]: 0.46^[1]
Spectral Type: M1-M5^[1]
G [mag]: 20.80(0.04)
^[1]
V [mag]: 13.199999809265137
^[1]



W1 [mag]: 16.63(0.04)
^[1]
W2 [mag]: 16.84(0.17)
^[1]