Coordinates

RA: 21^h03^m35^s.705
DEC: +45^∘45'05''.518
Position-uncertainty [arcsec]: 1.506 × 10^-5
Galactic-longitude [deg]: 87.13
Galactic-latitude [deg]: -0.68
Coordinate-Reference

Binary System

Alternative Name: ATO J315.8987+45.7515
X-ray Type: BE,XP,XT
Mean Distance [kpc]: 5.37
Distance Range [kpc]: 3.57 - 6.8
Hydrogen Column density [10²¹ cm⁻²]: 28.0

Compact Object

Orbital Period [d]: 12.68^[1]
Pulse Period [s]: 358.61^[1][2]

Chandra flux [10^-12 erg cm^-2 s^-1]:0.22 (0.5-7.0 keV)
Swift/XRT flux [10^-12 erg cm^-2 s^-1]:111.6 (0.3-10.0 keV)
Swift/BAT flux [10^-12 erg cm^-2 s^-1]:68.15 (14-195 keV)
INTEGRAL flux [10^-12 erg cm^-2 s^-1]:97.95 (17-60 keV)

Optical Counterpart

Gaia DR3 Name: 2162805896614571904
Counterpart: confirmed
Spectral Type: B0Ve^[1]
G [mag]: 13.774(0.005)
V [mag]: 14.2
J [mag]: 11.842(0.021)
H [mag]: 11.535(0.021)
K [mag]: 11.362(0.023)
W1 [mag]: 10.716(0.013)
W2 [mag]: 10.653(0.010)
Effective stellar temperature [K]: 29372.9