Coordinates

RA: 13^h01^m17^s.087
DEC: -61^∘36'06''.641
Position-uncertainty [arcsec]: 1.414 × 10^-5
Galactic-longitude [deg]: 304.1
Galactic-latitude [deg]: 1.25
Coordinate-Reference

Binary System

Alternative Name: 4U 1258-61
X-ray Type: BE,CL,XP,XT
Mean Distance [kpc]: 1.85
Distance Range [kpc]: 1.8 - 1.91
Hydrogen Column density [10²¹ cm⁻²]: 11.0

Compact Object

Orbital Period [d]: 133.0^[1][2]
Pulse Period [s]: 272.0^[1][2]
CRSF energy [keV]: 51^[1]
Swift/XRT flux [10^-12 erg cm^-2 s^-1]:117.4 (0.3-10.0 keV)
Swift/BAT flux [10^-12 erg cm^-2 s^-1]:529.05 (14-195 keV)
INTEGRAL flux [10^-12 erg cm^-2 s^-1]:21.45 (17-60 keV)

Optical Counterpart

Gaia DR3 Name: 5863533199843070208
Counterpart: confirmed
Spectral Type: B2 Vne^[1]
G [mag]: 12.6477(0.0029)
V [mag]: 14.40(0.10)
J [mag]: 9.798(0.022)
H [mag]: 9.297(0.022)
K [mag]: 9.040(0.021)