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) | +6.05[2] |
Characteristics | |
Spectral type | G2.5IV |
U−B color index | +0.22[3] |
B−V color index | +0.66[3] |
Astrometry | |
Radial velocity (Rv) | −4.00 ± 0.92[4] 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[4] | |
Mass | 1.317 ± 0.083 M☉ |
Radius | 1.456 ± 0.024 R☉ |
Luminosity | 2.24 L☉ |
Surface gravity (log g) | 4.23 cgs |
Temperature | 5849 K |
Metallicity [Fe/H] | 0.18 dex |
Rotational velocity (v sin i) | 3.1 km/s |
Age | 4.6 (4.2 - 5.6) Gyr |
Other designations | |
Database references | |
SIMBAD | data |
Exoplanet Archive | data |
Extrasolar Planets Encyclopaedia | data |
ρ Indi, Latinised as 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.
Planetary system
On September 17, 2002, this star was found to have a planet, Rho Indi b.[5]
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 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357.Vizier catalog entry
- ↑ Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- 1 2 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV data. Bibcode:1986EgUBV........0M.
- 1 2 Valenti, Jeff A.; Fischer, Debra A. (2005). "Spectroscopic Properties of Cool Stars (SPOCS). I. 1040 F, G, and K Dwarfs from Keck, Lick, and AAT Planet Search Programs". The Astrophysical Journal Supplement Series. 159: 141. Bibcode:2005ApJS..159..141V. doi:10.1086/430500.
- ↑ 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. Bibcode:2002MNRAS.337.1170J. arXiv:astro-ph/0206216 . 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. Bibcode:2006ApJ...646..505B. arXiv:astro-ph/0607493 . doi:10.1086/504701.
External links
Coordinates: 22h 54m 39.4833s, −70° 04′ 25.352″
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