HD 3240

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Template:Short description

HD 3240
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Cassiopeia[1]
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 5.08[3]
Characteristics
Spectral type B7 III[4]
B−V Template:Engvar Script error: No such module "val".[3]
Variable type constant[5]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[3] km/s
Proper motion (μ) RA: +22.954[2] mas/yr
Dec.: −1.905[2] mas/yr
Parallax (π)6.6398±0.0816 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−1.03[4]
Details
MassScript error: No such module "val".[6] Template:Solar mass
Radius3.9[2] Template:Solar radius
LuminosityScript error: No such module "val".[6] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val".[7] cgs
TemperatureScript error: No such module "val".[6] K
Metallicity [Fe/H]−0.59[8] dex
Rotational velocity (v sin i)59[6] km/s
Age201[9] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[10]
Database references
SIMBADdata

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HD 3240 is a single[11] star in the northern constellation of Cassiopeia, positioned near Zeta Cassiopeiae. This object has a blue-white hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.08.[3] The distance to HD 3240 is approximately 480 light years based on parallax. At that range, the visual magnitude of the star is diminished by an extinction of 0.22 due to interstellar dust.[9]

This star has a stellar classification of B7 III,[4] matching an aging giant star that has exhausted the supply of hydrogen at its core. It is around 201[9] million years old and is spinning with a projected rotational velocity of 59 km/s,[6] well below its critical velocity of 335 km/s.[7] The star has 3.9[6] times the mass of the Sun and is radiating 405 times the Sun's luminosity from its photosphere at an effective temperature of 11,885 K.[6]

References

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  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ a b c d e f Template:Cite Gaia DR3
  3. ↑ a b c d Script error: No such module "citation/CS1".
  4. ↑ a b c Script error: No such module "citation/CS1".
  5. ↑ Script error: No such module "citation/CS1".
  6. ↑ a b c d e f g Script error: No such module "citation/CS1".
  7. ↑ a b Script error: No such module "citation/CS1".
  8. ↑ Script error: No such module "citation/CS1".
  9. ↑ a b c Script error: No such module "citation/CS1".
  10. ↑ Template:Cite simbad
  11. ↑ Script error: No such module "citation/CS1".

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Template:Stars of Cassiopeia

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