Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Centaurus |
Right ascension | 14h 07m 47.92976s[1] |
Declination | −39° 45′ 42.7671″[1] |
Apparent magnitude (V) | 12.2–15.6[2] |
Characteristics | |
Evolutionary stage | Pre-main sequence[3] |
Spectral type | K5 IVe Li[3][4] |
Variable type | rotational T Tau and eclipsing[2] |
Astrometry | |
Radial velocity (Rv) | 5.904±0.151[4] km/s |
Proper motion (μ) | RA: −23.108±0.015 mas/yr[1] Dec.: −21.048±0.017 mas/yr[1] |
Parallax (π) | 7.2351 ± 0.0140 mas[1] |
Distance | 450.8 ± 0.9 ly (138.2 ± 0.3 pc) |
Details | |
Mass | Gaia DR3 with magnetism:[5] 0.977+0.023 −0.045 M☉ Gaia DR3 without magnetism:[5] 0.891+0.062 −0.144 M☉ Gaia DR2:[6]: 2 0.95±0.10 M☉ |
Radius | 1.0661+0.0062 −0.0139[7] R☉ |
Luminosity | 0.3431+0.0067 −0.0064[7] L☉ |
Surface gravity (log g) | 4.302+0.0243 −0.0243[7] cgs |
Temperature | 4343+24 −29[7] K |
Metallicity [Fe/H] | −0.1903+0.0448 −0.0422[7] dex |
Rotation | 3.206±0.002 d[8]: 6 [a] |
Rotational velocity (v sin i) | 14.6±0.4[9] km/s |
Age | ~16[3] or 21.38+4.30 −7.60[6]: 2 Myr |
Other designations | |
Database references | |
SIMBAD | data |
V1400 Centauri, also known as 1SWASP J140747.93−394542.6 or simply J1407, is a young, pre-main-sequence star that was eclipsed by the likely free-floating substellar object J1407b in April–June 2007. With an age around 20 million years, the star is about as massive as the Sun and is located in the constellation Centaurus at a distance of 451 light-years away from the Sun. V1400 Centauri is a member of Upper Centaurus–Lupus subgroup of the Scorpius–Centaurus association, a group of young, comoving stars close to the Sun.
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