29 Vulpeculae
Template:Location mark Location of 29 Vulpeculae (circled) | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vulpecula |
| Right ascension | Template:RA[1] |
| Declination | Template:DEC[1] |
| Apparent magnitude (V) | 4.82[2] |
| Characteristics | |
| Spectral type | A0V[3] |
| U−B Template:Engvar | −0.07[2] |
| B−V Template:Engvar | −0.02[2] |
| Astrometry | |
| Radial velocity (Rv) | −17.10[4] km/s |
| Proper motion (μ) | RA: +78.741[1] mas/yr Dec.: −4.572[1] mas/yr |
| Parallax (π) | 15.6257±0.3374 mas[1] |
| Distance | Template:Rnd ± Template:Rnd ly (Template:Rnd ± Template:Rnd pc) |
| Absolute magnitude (MV) | 0.56[5] |
| Details | |
| Mass | 2.67[3] Template:Solar mass |
| Luminosity | 71[3] Template:Solar luminosity |
| Surface gravity (log g) | 4.20[6] cgs |
| Temperature | 10,507[6] K |
| Metallicity [Fe/H] | −0.15[5] dex |
| Rotational velocity (v sin i) | 52[3] km/s |
| Age | 254[6] Myr |
| Metallicity [Fe/H] | {{{metal_fe2}}} dex |
| Other designations | |
| Template:Odlist[7] | |
| Database references | |
| SIMBAD | data |
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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.[2] The system lies approximately 209 light years away from the Sun based on parallax,[1] and is a member of the IC 2391 supercluster.[8] It is moving closer to the Earth with a heliocentric radial velocity of −17 km/s.[4]
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.[9] The visible component is an A-type main-sequence star with a stellar classification of A0V,[3] and has some slight abundance anomalies that resemble a weak Am star.[10] It is catalogued as a shell star, showing spectral features of a cooler circumstellar jacket of gas,[11] and may be a proto-shell star.[10] The star is an estimated 254[6] million years old with a relatively low projected rotational velocity of 52 km/s.[3] It has 2.67[3] times the mass of the Sun and is radiating 71[3] times the Sun's luminosity from its photosphere at an effective temperature of 10,507 K.[6]
References
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- ↑ a b c d e f Template:Cite DR2
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- ↑ a b c d e f g h Script error: No such module "Citation/CS1". Vizier catalog entry
- ↑ a b Script error: No such module "Citation/CS1".
- ↑ a b Script error: No such module "Citation/CS1". Vizier catalog entry
- ↑ a b c d e Script error: No such module "Citation/CS1". Vizier catalog entry
- ↑ Template:Cite simbad
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- ↑ a b Script error: No such module "Citation/CS1".
- ↑ Script error: No such module "Citation/CS1".
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