| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Aries |
| Right ascension | 02h 00m 13.2s |
| Declination | +13° 03' 08" |
| Apparent magnitude (V) | 12.31 |
| Characteristics | |
| Spectral type | M4.5 V |
| U−B color index | 1.35 |
| B−V color index | 1.8 |
| R−I color index | 1.39 |
| Variable type | Flare star |
| Astrometry | |
| Proper motion (μ) | RA: 1091 mas/yr Dec.: -1780 mas/yr |
| Parallax (π) | 222 ± 5 mas |
| Distance | 14.7 ± 0.3 ly (4.5 ± 0.1 pc) |
| Absolute magnitude (MV) | 14.07 |
| Details | |
| Mass | 0.089 M☉ |
| Radius | 0,5 R☉ |
| Luminosity | 0.00021 L☉ |
| Temperature | 2,000–3,500 K |
| Other designations | |
| Database references | |
| SIMBAD | data |
| ARICNS | data |
| Data sources: | |
| Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
|
TZ Arietis is a red dwarf star in the constellation Aries. It is too faint to be seen by the naked eye, although it lies relatively close to our Sun at a distance of about 14.5 light years. It is a flare star, which means it can suddenly increase in brightness for short periods of time.
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