LP 816-60
Star in the constellation Capricornus
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LP 816-60 is a single[13] red dwarf star of spectral type M4, located in constellation Capricornus at 18.33 light-years from Earth.[2]
  LP 816-60 Location of LP 816-60 in the constellation Capricornus | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Capricornus[1] |
| Right ascension | 20h 52m 33.01660s[2] |
| Declination | −16° 58′ 29.0033″[2] |
| Apparent magnitude (V) | 11.458[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4] |
| Spectral type | M4V[5] |
| Astrometry | |
| Radial velocity (Rv) | 8.5[6] km/s |
| Proper motion (μ) | RA: -309.115 mas/yr[2] Dec.: 37.051 mas/yr[2] |
| Parallax (π) | 177.9312±0.0365 mas[2] |
| Distance | 18.330 ± 0.004 ly (5.620 ± 0.001 pc) |
| Absolute magnitude (MV) | +12.63[1] |
| Details[7] | |
| Mass | 0.224±0.022 M☉ |
| Radius | 0.266±0.012 R☉ |
| Surface gravity (log g) | 4.584[8] cgs |
| Temperature | 3030±27[4] K |
| Metallicity [Fe/H] | -0.11±0.07[4] dex |
| Rotation | 67.6±0.1 d.[9] |
| Rotational velocity (v sin i) | 2.70±0.66[8] km/s |
| Age | 2.57+8.15 −1.95 Gyr |
| Other designations | |
| HIP 103039[10], LP 816-60, NLTT 50038[11], TYC 6348-400-1[12], 2MASS J20523304-1658289 | |
| Database references | |
| SIMBAD | data |
The discovery name of this star is LP 816-60,[14] which indicates that its discovery was published between 1963 and 1981 in University of Minnesota, Minneapolis.[15] LP 816-60 is known at least from 1979, when it was included to Luyten's catalogue NLTT.[11]
No massive planets were detected around LP 816-60 as of 2013.[13] The star has a magnetic starspot cycle of 10.6±1.7 years,[9] and weak magnetic fields in chromosphere averaging 4.4 G.[16]