Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
HD 102365 A | |
Right ascension | 11h 46m 31.07253s[1] |
Declination | −40° 30′ 01.2859″[1] |
Apparent magnitude (V) | 4.88[2] |
HD 102365 B | |
Right ascension | 11h 46m 32.68988s[3] |
Declination | −40° 29′ 47.6048″[3] |
Apparent magnitude (V) | 15[4] |
Characteristics | |
Spectral type | G2V[5] + M4V[6] |
U−B color index | 0.10[2] |
B−V color index | 0.67[2] |
Astrometry | |
HD 102365 A | |
Radial velocity (Rv) | 16.94±0.12[1] km/s |
Proper motion (μ) | RA: −1530.971 mas/yr[1] Dec.: +403.287 mas/yr[1] |
Parallax (π) | 107.3024 ± 0.0873 mas[1] |
Distance | 30.40 ± 0.02 ly (9.319 ± 0.008 pc) |
Absolute magnitude (MV) | 5.07[7] |
HD 102365 B | |
Radial velocity (Rv) | 17.23±0.27[3] km/s |
Proper motion (μ) | RA: −1534.679 mas/yr[3] Dec.: +381.396 mas/yr[3] |
Parallax (π) | 107.4237 ± 0.0351 mas[3] |
Distance | 30.362 ± 0.010 ly (9.309 ± 0.003 pc) |
Details | |
A | |
Mass | 0.889[8] M☉ |
Radius | 0.96[8] R☉ |
Luminosity | 0.85[9] L☉ |
Surface gravity (log g) | 4.51[5] cgs |
Temperature | 5,643[9] K |
Metallicity [Fe/H] | −0.28[9] dex |
Rotational velocity (v sin i) | 0.5[10] km/s |
Age | 4.5–5.7[11] Gyr |
Other designations | |
Database references | |
SIMBAD | A |
B | |
ARICNS | data |
HD 102365 (66 G. Centauri) is a binary star system that is located in the northeastern part of the Centaurus constellation, at a distance of about 30.4 light-years (9.3 parsecs) from the Solar System. The larger member of the system is a G-type star that is smaller than the Sun but of similar mass. It has a common proper motion companion that was discovered by W. J. Luyten in 1960.[6] This M-type star appears to be in a wide orbit around the primary at a current separation of about 211 astronomical units (AU),[6] (or 211 times the separation of the Earth from the Sun). By comparison, Neptune orbits at an average distance of 30 AU.
GaiaDR3a
was invoked but never defined (see the help page).ibsh8_30
was invoked but never defined (see the help page).GaiaDR3b
was invoked but never defined (see the help page).rmaa28_1_43
was invoked but never defined (see the help page).apj132_1_161
was invoked but never defined (see the help page).aphs190_1_1
was invoked but never defined (see the help page).aaa501_3_941
was invoked but never defined (see the help page).apjss168_2_297
was invoked but never defined (see the help page).ab6_2_308
was invoked but never defined (see the help page).aaa493_3_1099
was invoked but never defined (see the help page).apj687_2_1264
was invoked but never defined (see the help page).SIMBAD
was invoked but never defined (see the help page).