17 Lyrae
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lyra |
| AB | |
| Right ascension | 19h 07m 25.58012s |
| Declination | +32° 30′ 6.2599″ |
| Apparent magnitude (V) | 5.221 |
| A | |
| Right ascension | 19h 07m 25.58s |
| Declination | +32° 30′ 06.3″ |
| Apparent magnitude (V) | 5.26 |
| B | |
| Right ascension | 19h 07m 25.31s |
| Declination | +32° 30′ 07.5″ |
| Apparent magnitude (V) | 9.1 |
| Characteristics | |
| Spectral type | F0V |
| U−B color index | +0.044 |
| B−V color index | +0.351 |
| Astrometry | |
| A | |
| Proper motion (μ) | RA: +114.276 mas/yr Dec.: +18.316 mas/yr |
| Parallax (π) | 22.8557±0.0782 mas |
| Distance | 142.7 ± 0.5 ly (43.8 ± 0.1 pc) |
| B | |
| Proper motion (μ) | RA: +120.597 mas/yr Dec.: +9.110 mas/yr |
| Parallax (π) | 22.8407 ± 0.0190 mas |
| Distance | 142.8 ± 0.1 ly (43.78 ± 0.04 pc) |
| Orbit | |
| Primary | A |
| Period (P) | 42.857 days |
| Eccentricity (e) | 0.0 |
| Semi-amplitude (K1) (primary) | 13.10 km/s |
| Details | |
| A | |
| Mass | 1.6 M☉ |
| Radius | 2.5 R☉ |
| Luminosity | 16.4 L☉ |
| Surface gravity (log g) | 3.57 cgs |
| Temperature | 6,887 K |
| Metallicity [Fe/H] | 0.0 dex |
| Rotational velocity (v sin i) | 138 km/s |
| Age | 1.4 Gyr |
| B | |
| Mass | 0.73 M☉ |
| Surface gravity (log g) | 4.61 cgs |
| Temperature | 5,266 K |
| Metallicity [Fe/H] | −0.46 dex |
| Other designations | |
| 17 Lyrae, HR 7261, BD+32°3326, HD 178449, SAO 67835, HIP 93917, GC 26340, CCDM J19075+3231, IDS 19036+3221 | |
| Database references | |
| SIMBAD | data |
17 Lyrae is a multiple star system in the constellation Lyra, 143 light years away from Earth.