29 Vulpeculae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vulpecula |
| Right ascension | 20h 38m 31.32904s |
| Declination | 21° 12′ 04.3763″ |
| Apparent magnitude (V) | 4.82 |
| Characteristics | |
| Spectral type | A0V |
| U−B color index | −0.07 |
| B−V color index | −0.02 |
| Astrometry | |
| Radial velocity (Rv) | −17.10 km/s |
| Proper motion (μ) | RA: +78.741 mas/yr Dec.: −4.572 mas/yr |
| Parallax (π) | 15.6257±0.3374 mas |
| Distance | 209 ± 5 ly (64 ± 1 pc) |
| Absolute magnitude (MV) | 0.56 |
| Details | |
| Mass | 2.67 M☉ |
| Luminosity | 71 L☉ |
| Surface gravity (log g) | 4.20 cgs |
| Temperature | 10,507 K |
| Metallicity [Fe/H] | −0.15 dex |
| Rotational velocity (v sin i) | 52 km/s |
| Age | 254 Myr |
| Other designations | |
| 29 Vul, BD+20°4658, FK5 1539, HD 196724, HIP 101867, HR 7891, SAO 88944 | |
| Database references | |
| SIMBAD | data |
29 Vulpeculae is a suspected astrometric binary star system in the northern constellation Vulpecula. It is visible to the naked eye as a faint, white-hued point of light with an apparent visual magnitude of 4.82. The system lies approximately 209 light years away from the Sun based on parallax, and is a member of the IC 2391 supercluster. It is moving closer to the Earth with a heliocentric radial velocity of −17 km/s.
Radial velocity measurements from High Accuracy Radial Velocity Planet Searcher with an amplitude of 4 km/s indicate that it is a spectroscopic binary of unknown period. The visible component is an A-type main-sequence star with a stellar classification of A0V, and has some slight abundance anomalies that resemble a weak Am star. It is catalogued as a shell star, showing spectral features of a cooler circumstellar jacket of gas, and may be a proto-shell star. The star is an estimated 254 million years old with a relatively low projected rotational velocity of 52 km/s. It has 2.67 times the mass of the Sun and is radiating 71 times the Sun's luminosity from its photosphere at an effective temperature of 10,507 K.