9 Vulpeculae

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Template:Short description

9 Vulpeculae
Template:Location mark
Location of 9 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] (4.99 - 5.08)[3]
Characteristics
Spectral type B8 IIIn[4]
Apparent magnitude (U) Script error: No such module "val".[2]
Apparent magnitude (B) Script error: No such module "val".[2]
Variable type suspected[3]
Astrometry
Radial velocity (Rv)+5.00[5] km/s
Proper motion (μ) RA: +13.148[1] mas/yr
Dec.: +5.142[1] mas/yr
Parallax (π)5.8317±0.1242 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−1.14[6]
Details
Mass3.5[7] Template:Solar mass
Radius2.8[8] Template:Solar radius
Luminosity216[8] Template:Solar luminosity
Surface gravity (log g)3,54[7] cgs
Temperature12,042[7] K
Metallicity [Fe/H]−0.03[7] dex
Rotational velocity (v sin i)185[9] km/s
Age185[10] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[11]
Database references
SIMBADdata

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9 Vulpeculae is a star in the northern constellation of Vulpecula, located about 560 light years away based on parallax. It is visible to the naked eye as a faint, blue-white hued star with a baseline apparent visual magnitude of 5.01. The star is moving further from the Earth with a heliocentric radial velocity of +5 km/s.

This a B-type star with a stellar classification of B8 IIIn,[4] where the 'n' notation indicates "nebulous" lines due to rapid rotation. It has a high rate of spin with a projected rotational velocity of 185 km/s.[9] The star is radiating 216 times the Sun's luminosity from its photosphere at an effective temperature of Script error: No such module "val".. This is a suspected variable star of unknown type, ranging in magnitude from 4.99 down to 5.08.[3]

9 Vulpeculae has two reported companions: component B, with a separation of 9.3" and magnitude 13.4, and C, with a separation of 108" and a magnitude of 12.5".[12][4] Both are unrelated background objects.[13][14]

References

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  1. ↑ a b c d e Template:Cite Gaia DR3
  2. ↑ a b c Script error: No such module "Citation/CS1".
  3. ↑ a b c Script error: No such module "Citation/CS1".
  4. ↑ a b c Script error: No such module "Citation/CS1". Vizier catalog entry
  5. ↑ Script error: No such module "Citation/CS1".
  6. ↑ 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. ↑ a b Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1". Vizier catalog entry
  11. ↑ Template:Cite simbad
  12. ↑ Script error: No such module "Citation/CS1". Vizier catalog entry
  13. ↑ Template:Cite Gaia DR3
  14. ↑ Template:Cite Gaia DR3

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Template:Stars of Vulpecula

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