12 Vulpeculae

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Template:Short description

12 Vulpeculae
Template:Location mark
Location of 12 Vulpeculae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Vulpecula
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) Script error: No such module "val".[2] (4.78 - 4.97)[3]
Characteristics
Spectral type B2.5V[4]
Apparent magnitude (U) Script error: No such module "val".[2]
Apparent magnitude (B) Script error: No such module "val".[2]
Variable type Be star[3]
Astrometry
Radial velocity (Rv)−24.90[5] km/s
Proper motion (μ) RA: Script error: No such module "val".[1] mas/yr
Dec.: Script error: No such module "val".[1] mas/yr
Parallax (π)5.1710±0.1070 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−1.52[4]
Details
Mass6.8[6] Template:Solar mass
Luminosity963[4] Template:Solar luminosity
Surface gravity (log g)3.36[7] cgs
Temperature18,859[7] K
Metallicity [Fe/H]−0.01[7] dex
Rotational velocity (v sin i)195[8] km/s
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[9]
Database references
SIMBADdata

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12 Vulpeculae is a star in the northern constellation of Vulpecula, located approximately 630 light years away based on parallax.[1] It has the variable star designation V395 Vul; 12 Vulpeculae is the Flamsteed designation. This object is visible to the naked eye as a faint, blue-white hued star with a baseline apparent visual magnitude of 4.928.[2] It is moving closer to the Earth with a heliocentric radial velocity of -25 km/s.[5]

This is a variable Be star with a stellar classification of B2.5V;[4] its brightness ranges from magnitude 4.78 down to 4.97.[3] As is true with other Be stars, it has a high rate of rotation with a projected rotational velocity of 195 km/s.[8] The star has 6.8[6] times the mass of the Sun and is radiating 963[4] times the Sun's luminosity from its photosphere at an effective temperature of 18,859 K.[7]

References

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  1. ↑ a b c d e f Template:Cite Gaia EDR3
  2. ↑ a b c d Script error: No such module "Citation/CS1".
  3. ↑ a b c Script error: No such module "Citation/CS1".
  4. ↑ a b c d e Script error: No such module "Citation/CS1". Vizier catalog entry
  5. ↑ a b Script error: No such module "Citation/CS1".
  6. ↑ a b Script error: No such module "Citation/CS1". Vizier catalog entry
  7. ↑ a b c d Script error: No such module "Citation/CS1".
  8. ↑ a b Script error: No such module "Citation/CS1".
  9. ↑ Template:Cite simbad

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Template:Stars of Vulpecula

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