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 |
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]
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]