Coordinates
RA: 19h58m21s.671
DEC: +35∘12'05''.684
Position-uncertainty [arcsec]: 1.696 × 10-5
Galactic-longitude [deg]: 71.33
Galactic-latitude [deg]: 3.07
Coordinate-Reference
Binary System
Alternative Name: HD 226868
X-ray Type: BH,MQ,RS,SG,US
Mean Distance [kpc]: 2.1
Distance Range [kpc]: 1.98 - 2.24
Hydrogen Column density [1021 cm−2]: 0.43
Compact Object
Mean Mass[M☉]: 21.2[1]
Mass Range [M☉]: 19.0 - 23.4[1]
Orbital Period [d]: 5.0[1]
Swift/XRT flux [10-12 erg cm-2 s-1]:99360.0 (0.3-10.0 keV)
Swift/BAT flux [10-12 erg cm-2 s-1]:17234.2 (14-195 keV)
Optical Counterpart
Gaia DR3 Name: 2059383668236814720
Counterpart: confirmed
Spectral Type: O9.7Iabpvar[1]
G [mag]: 8.5366(0.0029)
V [mag]: 8.91
J [mag]: 6.872(0.023)
H [mag]: 6.652(0.018)
K [mag]: 6.501(0.020)
W1 [mag]: 7.054(0.033)
W2 [mag]: 6.570(0.017)
Effective stellar temperature [K]: 20879.5
