HD 219134
HD 219134 (also known as Gliese 892 or HR 8832) is a main-sequence star in the constellation of Cassiopeia. It is smaller and less luminous than the Sun, with a spectral class of K3V, which makes it an orange-hued star. HD 219134 is relatively close to our system, with an estimated distance of 21.34 light years. This star is close to the limit of apparent magnitude that can still be seen by the unaided eye. The limit is considered to be magnitude 6 for most observers. This star has a magnitude 9.4 optical companion at an angular separation of 106.6 arcseconds.
Star HD 219134 (circled) lies just off the "W" shape of the constellation Cassiopeia. | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cassiopeia |
| Right ascension | 23h 13m 16.97496s |
| Declination | +57° 10′ 06.0838″ |
| Apparent magnitude (V) | 5.574 |
| Characteristics | |
| Spectral type | K3V |
| U−B color index | +0.902 |
| B−V color index | +0.983 |
| Variable type | Suspected |
| Astrometry | |
| Radial velocity (Rv) | −18.68±0.12 km/s |
| Proper motion (μ) | RA: 2074.414 mas/yr Dec.: 294.452 mas/yr |
| Parallax (π) | 152.8640 ± 0.0494 mas |
| Distance | 21.336 ± 0.007 ly (6.542 ± 0.002 pc) |
| Absolute magnitude (MV) | 6.46 |
| Details | |
| Mass | 0.81±0.03 M☉ |
| Radius | 0.778±0.005 R☉ |
| Luminosity | 0.2646 L☉ |
| Surface gravity (log g) | 4.567±0.018 cgs |
| Temperature | 4699 K |
| Metallicity [Fe/H] | +0.11 (± 0.04) dex |
| Rotational velocity (v sin i) | 6.94 km/s |
| Age | 11.0 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
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