Rho Indi
| 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
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- ↑ Jones, Hugh R. A. et al. (2002). "Extrasolar planets around HD 196050, HD 216437 and HD 160691". Monthly Notices of the Royal Astronomical Society 337 (4): 1170–1178. arXiv:astro-ph/0206216. Bibcode:2002MNRAS.337.1170J. doi:10.1046/j.1365-8711.2002.05787.x.
- ↑ Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
External links
Coordinates: 
22h 54m 39.4833s, −70° 04′ 25.352″
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