TZ Arietis

TZ Arietis
TZ Arietis is located in the constellation Aries.
TZ Arietis is located in the constellation Aries.
TZ Arietis
Location of TZ Arietis in the constellation Aries

Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension 02h 00m 12.95632s[1]
Declination +13° 03′ 07.0006″[1]
Apparent magnitude (V) 12.298[2]
Characteristics
Spectral type M4.5 V[3]
U−B color index +1.37[4]
B−V color index +1.80[4]
R−I color index 1.39[3]
Variable type Flare star
Astrometry
Radial velocity (Rv)−28.29±0.25[1] km/s
Proper motion (μ) RA: 1096.458 mas/yr[1]
Dec.: -1771.526 mas/yr[1]
Parallax (π)223.7321 ± 0.0699 mas[1]
Distance14.578 ± 0.005 ly
(4.470 ± 0.001 pc)
Absolute magnitude (MV)14.03[5]
Details
Mass0.14[6] M☉
Radius0.161[7] R☉
Luminosity0.00135[8] L☉
Surface gravity (log g)5.05[6] cgs
Temperature3,158[7] K
Metallicity [Fe/H]−0.14[7] dex
Rotational velocity (v sin i)3.8[8] km/s
Age4.8[6] Gyr
Other designations
TZ Ari, GJ 83.1, GJ 9066, G 003-033, L 1159-16, LFT 171, LHS 11, PLX 412.02, 2MASS J02001278+1303112[9]
Database references
SIMBADdata

TZ Arietis (also known as Gliese 83.1, GJ 9066, or L 1159-16) is a red dwarf in the northern constellation of Aries. With a normal apparent visual magnitude of 12.3, it is too faint to be seen by the naked eye, although it lies relatively close to the Sun at a distance of 14.6 light-years (4.47 parsecs). It is a flare star, which means it can suddenly increase in brightness for short periods of time.

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