40 Arietis

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Template:Short description

40 Arietis
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.82[2]
Characteristics
Spectral type K1 III[3]
U−B Template:Engvar 1.13
B−V Template:Engvar +1.20[2]
R−I Template:Engvar 0.44
Variable type suspected[4]
Astrometry
Radial velocity (Rv)+47.1[5] km/s
Proper motion (μ) RA: +41.250[1] mas/yr
Dec.: −32.585[1] mas/yr
Parallax (π)7.3266±0.1215 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)0.09[6]
Details[7]
MassScript error: No such module "val". Template:Solar mass
RadiusScript error: No such module "val".[1] Template:Solar radius
LuminosityScript error: No such module "val".[1] Template:Solar luminosity
Surface gravity (log g)Script error: No such module "val". cgs
TemperatureScript error: No such module "val". K
Metallicity [Fe/H]Script error: No such module "val". dex
AgeScript error: No such module "val". Gyr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[8]
Database references
SIMBADdata

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40 Arietis is a probable binary star[3] system in the northern constellation of Aries. 40 Arietis is the Flamsteed designation. Their combined apparent magnitude is 5.82,[2] putting the system near the limit of naked eye visibility. Based upon an annual parallax shift of just Script error: No such module "val".,[1] it is Script error: No such module "convert". away from the Sun. At that distance, its brightness is diminished by 0.21 in magnitude from extinction caused by interstellar gas and dust.[9]

This is a suspected spectroscopic binary with an angular separation of Script error: No such module "val". between the two components.[3] The visible component is an evolved giant star with a stellar classification of K1 III.[3] It is a suspected variable star of unknown type,[4] and is around 2.6 billion years old with 1.6 times the mass of the Sun.[7] With the supply of hydrogen at its core exhausted, the star has expanded to 20 times the Sun's radius.[1] It is radiating 128 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,473 K.[7]

References

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  1. ↑ a b c d e f g h i Template:Cite DR2
  2. ↑ a b c Script error: No such module "citation/CS1".
  3. ↑ a b c d Script error: No such module "citation/CS1".
  4. ↑ a b Script error: No such module "citation/CS1".
  5. ↑ Script error: No such module "citation/CS1".
  6. ↑ Script error: No such module "citation/CS1".
  7. ↑ a b c Script error: No such module "citation/CS1".
  8. ↑ Template:Cite simbad
  9. ↑ Script error: No such module "citation/CS1".

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External links

Template:Stars of Aries

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