HIP 79431
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000.0 Equinox J2000.0 |
|
|---|---|
| Constellation | Scorpius |
| Right ascension | 16h 12m 41.77s |
| Declination | −18° 52′ 31.8″ |
| Apparent magnitude (V) | 11.337 |
| Characteristics | |
| Spectral type | M3V |
| Apparent magnitude (B) | 14.39 |
| Apparent magnitude (R) | 10.46 |
| Apparent magnitude (I) | 9.37 |
| Apparent magnitude (J) | 7.555 |
| Apparent magnitude (H) | 6.855 |
| Apparent magnitude (K) | 6.589 |
| B−V color index | 3.05 |
| V−R color index | 0.88 |
| R−I color index | 1.09 |
| Variable type | none |
| Astrometry | |
| Proper motion (μ) | RA: 24.12 mas/yr Dec.: −210.89 mas/yr |
| Parallax (π) | 69.46 ± 3.12[1] mas |
| Distance | 47 ± 2 ly (14.4 ± 0.6 pc) |
| Absolute magnitude (MV) | 10.47 |
| Details | |
| Mass | 0.49 ± 0.05 M☉ |
| Temperature | 3,689 ± 20[2] K |
| Metallicity [Fe/H] | +0.46 ± 0.17[2] dex |
| Other designations | |
|
LP 804-27, NLTT 42226
|
|
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | data |
| Extrasolar Planets Encyclopaedia |
data |
HIP 79431 is an 11th magnitude M-type main sequence star located approximately 47 light years away in the constellation Scorpius. This star is smaller, cooler, dimmer, and less massive than our Sun. Also its metal content is 2.5 times as much as the Sun. In 2010, a superjovian planet was found in orbit around the star. This planet is one of the most massive found around a red dwarf star.
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥2.1 MJ | 0.36 | 111.7 ± 0.7 | 0.29 ± 0.02 | — | — |
See also
References
- ↑ Validation of the new Hipparcos reduction, van Leeuwen, F. 2007
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found. (web preprint)
Coordinates: 
16h 12m 41.77s, −1852° 31.8′ 49″
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