Rho Indi
From Infogalactic: the planetary knowledge core
Observation data Epoch J2000.0 Equinox J2000.0 |
|
---|---|
Constellation | Indus |
Right ascension | 22h 54m 39.482s[1] |
Declination | –70° 04′ 25.35″[1] |
Apparent magnitude (V) | +6.064 |
Characteristics | |
Spectral type | G2.5IV |
Variable type | none |
Astrometry | |
Radial velocity (Rv) | –3.0 km/s |
Proper motion (μ) | RA: -43.89 ± 0.26[1] mas/yr Dec.: 73.04 ± 0.24[1] mas/yr |
Parallax (π) | 37.39 ± 0.36[1] mas |
Distance | 87.2 ± 0.8 ly (26.7 ± 0.3 pc) |
Absolute magnitude (MV) | +3.948 |
Details | |
Mass | 1.07 M☉ |
Radius | 1.1 R☉ |
Luminosity | 1.09 L☉ |
Surface gravity (log g) | 4.29 cgs |
Temperature | 5636 K |
Metallicity | 0.3 (200%) |
Rotational velocity (v sin i) | 3.13 km/s |
Age | 12.96 × 109 years |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
Extrasolar Planets Encyclopaedia |
data |
Other designations | |
Rho Indi (Bright Star designation HR 8701) is a yellow subgiant star in the constellation Indus. It is, barely, a naked eye star, not visible in the northern hemisphere outside the tropics. The age of the star is almost 13 Gya and it will soon die away as a planetary nebula.
Planetary system
On September 17, 2002, this star was found to have a planet, Rho Indi b.[2]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | >2.26 ± 0.19 MJ | 2.54 ± 0.15 | 1353 ± 25 | 0.319 ± 0.025 | — | — |
See also
References
External links
Coordinates: 22h 54m 39.4833s, −70° 04′ 25.352″
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