YZ Ceti
 Location of YZ Ceti, click for larger image. |
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| Observation data Epoch J2000 Equinox J2000 |
|
|---|---|
| Constellation | Cetus |
| Right ascension | 01h 12m 30.64s |
| Declination | −16° 59′ 56.3″ |
| Apparent magnitude (V) | 12.10 |
| Characteristics | |
| Spectral type | M4.5V |
| U−B color index | 1.35 |
| B−V color index | 1.83 |
| Variable type | Flare star |
| Astrometry | |
| Radial velocity (Rv) | +28.2 km/s |
| Proper motion (μ) |
RA: 1208.53 ± 5.57 mas/yr Dec.: 640.73 ± 3.71 mas/yr |
| Parallax (π) | 267.4 ± 3.0 mas |
| Distance | 12.2 ± 0.1 ly (3.74 ± 0.04 pc) |
| Absolute magnitude (MV) | 14.25 |
| Other designations | |
| Database references | |
| SIMBAD | data |
YZ Ceti is a red dwarf star in the constellation Cetus. Although it is relatively close to the Sun at just 12 light years, this star cannot be seen with the naked eye. It is classified as a flare star that undergoes intermittent fluctuations in luminosity. YZ Ceti is about 8.5 percent the mass of the Sun, and is normally less than 1/5,000th as luminous.
This star is unusually close to Tau Ceti, a star of spectral class G8. The two are only about 1.6 light years apart, a little more than a third of the distance from the Sun to the Solar System's nearest neighbor, Proxima Centauri.
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