HD 216718
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquarius |
| Right ascension | 22h 55m 10.96166s |
| Declination | −04° 59′ 16.4546″ |
| Apparent magnitude (V) | 5.72 (6.03 + 7.75) |
| Characteristics | |
| Spectral type | K0III-IV |
| U−B color index | +0.60 |
| B−V color index | +0.88 |
| Astrometry | |
| Radial velocity (Rv) | −7.06±0.13 km/s |
| Proper motion (μ) | RA: +29.88 mas/yr Dec.: −10.78 mas/yr |
| Parallax (π) | 11.99±0.65 mas |
| Distance | 270 ± 10 ly (83 ± 5 pc) |
| Absolute magnitude (MV) | +1.12 |
| Orbit | |
| Period (P) | 96.48 yr |
| Semi-major axis (a) | 0.4810″ |
| Eccentricity (e) | 0.6430 |
| Details | |
| Surface gravity (log g) | 3.16 cgs |
| Temperature | 5,080 K |
| Metallicity [Fe/H] | 0.04 dex |
| Rotational velocity (v sin i) | 0.0 km/s |
| Other designations | |
| BU 718, BD−05°5885, HD 216718, HIP 113184, HR 8716, SAO 146388 | |
| Database references | |
| SIMBAD | data |
HD 216718 is a binary star system in the equatorial constellation of Aquarius.