Coordinates


RA: 04h40m059s.33
DEC: +4431'49''.239
Position-uncertainty [arcsec]: 1.457 × 10-5
Galactic-longitude [deg]: 159.85
Galactic-latitude [deg]: -1.27
Coordinate-Reference

Binary System


Alternative Name: RX J0440.9+4431
X-ray Type: BE,CL,XP
Mean Distance [kpc]: 2.29
Distance Range [kpc]: 1.94 - 2.52
Hydrogen Column density [1021 cm−2]: 8.42

Compact Object




Orbital Period [d]: 155.0[1]
Pulse Period [s]: 202.5[1][2][3]
CRSF energy [keV]: 32[1][2]
XMM-Newton flux [10-12 erg cm-2 s-1]:56.98 (0.2-12.0 keV)
Swift/XRT flux [10-12 erg cm-2 s-1]:124.6 (0.3-10.0 keV)
INTEGRAL flux [10-12 erg cm-2 s-1]:57.34 (17-60 keV)

Optical Counterpart


Gaia DR3 Name: 252878401557369088
Counterpart: confirmed
Spectral Type: B0e[1]
G [mag]: 10.4039(0.0035)
V [mag]: 10.73
J [mag]: 9.500(0.023)
H [mag]: 9.317(0.030)
K [mag]: 9.182(0.018)
W1 [mag]: 8.248(0.019)
W2 [mag]: 8.004(0.014)
Effective stellar temperature [K]: 32531.7