LP 816-60

LP 816-60 is a single^[3] red dwarf star of spectral type M4, located in constellation Capricornus at 18.6 light-years from Earth.^[1]

LP 816-60

Observation data Epoch J2000      Equinox J2000
Constellation	Capricornus
Right ascension	20h 52m 33.01679s[1]
Declination	−16° 58′ 29.0249″[1]
Apparent magnitude (V)	11.458[2]
Characteristics
Spectral type	M4[3]
Astrometry
Radial velocity (Rv)	8.5[4] km/s
Proper motion (μ)	RA: -309.115 mas/yr[5] Dec.: 37.051 mas/yr[5]
Parallax (π)	177.9312±0.0365 mas[5]
Distance	18.330 ± 0.004 ly (5.620 ± 0.001 pc)
Details[6]
Mass	0.224±0.022 M☉
Radius	0.266±0.012 R☉
Surface gravity (log g)	4.584[7] cgs
Temperature	3030±27[8] K
Metallicity [Fe/H]	-0.11±0.07[8] dex
Rotation	67.6±0.1 d.[9]
Rotational velocity (v sin i)	2.70±0.66[7] km/s
Age	2.57+8.15 −1.95 Gyr
Other designations
HIP 103039[1], LP 816-60, NLTT 50038[10], TYC 6348-400-1[11], 2MASS J20523304-1658289
Database references
SIMBAD	data
LP 816-60 Location of LP 816-60 in the constellation Capricornus

The discovery name of this star is LP 816-60,^[12] which indicates that its discovery was published between 1963 and 1981 in University of Minnesota, Minneapolis.^[13] LP 816-60 is known at least from 1979, when it was included to Luyten's catalogue NLTT.^[10]

No massive planets were detected around LP 816-60 as in 2013.^[3] The star has a magnetic starspot cycle of 10.6±1.7 years,^[9] and weak magnetic fields in chromosphere averaging 4.4 G.^[14]