HD 154577
From Infogalactic: the planetary knowledge core
| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Ara |
| Right ascension | 17h 10m 10.35091s[1] |
| Declination | −60° 43′ 43.5757″[1] |
| Apparent magnitude (V) | 7.385[2] |
| Characteristics | |
| Spectral type | K2.5Vk:[3] |
| U−B color index | +0.53[4] |
| B−V color index | +0.89[4] |
| Astrometry | |
| Radial velocity (Rv) | +8.8[5] km/s |
| Proper motion (μ) | RA: 70.96[1] mas/yr Dec.: 589.86[1] mas/yr |
| Parallax (π) | 73.41 ± 0.70[1] mas |
| Distance | 44.4 ± 0.4 ly (13.6 ± 0.1 pc) |
| Absolute magnitude (MV) | 6.71[2] |
| Details | |
| Mass | 0.68[6] M☉ |
| Radius | 0.68[7] R☉ |
| Surface gravity (log g) | 4.70[3] cgs |
| Temperature | 4,850[3] K |
| Metallicity [Fe/H] | −0.70[8] dex |
| Rotational velocity (v sin i) | 0.2[9] km/s |
| Age | 3.2[10] Gyr |
| Other designations | |
HD 154577 (Gliese 656) is a solar-type star in the southern constellation of Ara. It is a high proper motion star and is located about 44 light years from the Sun. This star has only 68% of the Sun's mass and radius, a effective temperature of 4,850 K and a stellar classification of K2V, which indicates it is a K-type main sequence star. As of 2005, this star is not known to host any planets.[6] No excess of infrared radiation has been detected of the type that would indicate the presence of an orbiting debris disk.[10]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found. Note: see VizieR catalogue V/130.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 10.0 10.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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