Coordinates

RA: 16^h57^m49^s.809
DEC: +35^∘20'32''.361
Position-uncertainty [arcsec]: 1.694 × 10^-5
Galactic-longitude [deg]: 58.15
Galactic-latitude [deg]: 37.52
Coordinate-Reference

Binary System

Alternative Name: 2A 1655+353
X-ray Type: XP, EB, DS
Mean Distance [kpc]: 7.09^[1]
Distance Range [kpc]: 6.46 - 7.95^[1]
Hydrogen Column density [10²² cm⁻²]: 14.0
^[1]
G-band Absorption [mag]: 48.78
^[1]

Compact Object

Mass[M_☉]: 1.5^[1]

Orbital Period [d]: 1.7^[1]
Pulse Period [s]: 1.24^[1]

soft energy band: 0.2-12.0 keV
soft-band flux [10^-12 erg cm^-2 s^-1]:12.44 - 1398.82
soft X-ray variability: 112.45
hard energy band: 20.0-60.0 keV

Optical Counterpart

Gaia DR3 Name: 1338822021487330304

Spectral Type: B3/6ep^[1]
G [mag]: 13.618(0.020)
^[1]
V [mag]: 13.630000114440918
^[1]
J [mag]: 13.729(0.029)
^[1]
H [mag]: 13.609(0.031)
^[1]
K [mag]: 13.628(0.034)
^[1]
W1 [mag]: 13.222(0.015)
^[1]
W2 [mag]: 13.172(0.012)
^[1]