Coordinates

RA: 18^h58^m041^s.58
DEC: +22^∘39'0029''.4
Position-uncertainty [arcsec]: 5.000 × 10^-2
Galactic-longitude [deg]: 54.05
Galactic-latitude [deg]: 8.61
Coordinate-Reference

Binary System

Alternative Name: J1858+2230
X-ray Type: SH, RP, XT, BH, MQ?
Mean Distance [kpc]: 4.2^[1]
Distance Range [kpc]: 3.7 - 4.7^[1]
Hydrogen Column density [10²² cm⁻²]: 0.6
^[1]
G-band Absorption [mag]: 2.09
^[1]

Compact Object

Mass[M_☉]: 5.400000095367432^[1]

Orbital Period [d]: 0.38166666666666665^[1]


soft energy band: 0.3-8.0 keV
soft-band flux [10^-12 erg cm^-2 s^-1]:0.0 - 8630.0
soft X-ray variability: 5753333.33
hard energy band: 20.0-60.0 keV

Optical Counterpart

Spectral Type: G5V-K0V^[1]

V [mag]: 18.840(0.030)
^[1]