55 Arietis

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Template:Short description

55 Arietis
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension Template:RA[1]
Declination Template:DEC[1]
Apparent magnitude (V) 5.72[2]
Characteristics
Spectral type B8 III[3]
U−B Template:Engvar –0.15[2]
B−V Template:Engvar Script error: No such module "val".[4]
Astrometry
Radial velocity (Rv)Script error: No such module "val".[4] km/s
Proper motion (μ) RA: +19.192[1] mas/yr
Dec.: −12.057[1] mas/yr
Parallax (π)3.5853±0.1194 mas[1]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)−1.75[4]
Details
Mass4.1[5] 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".[5] cgs
TemperatureScript error: No such module "val".[1] K
Rotational velocity (v sin i)Script error: No such module "val".[5] km/s
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[6]
Database references
SIMBADdata

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55 Arietis is a single[7] star in the northern zodiac constellation of Aries. 55 Arietis is the Flamsteed designation. It is faintly visible to the naked eye as a dim, blue-white hued point of light with an apparent visual magnitude of 5.72.[2] Based upon an annual parallax shift of Script error: No such module "val".,[1] it is approximately Script error: No such module "convert". distant from Earth, give or take a 30 light-year margin of error. Eggen (1995) listed it as a proper motion candidate for membership in the IC 2391 supercluster.[8] It may be a runaway star, having a peculiar velocity of Script error: No such module "val". relative to its neighbors.[9]

The spectrum of this star matches a B-type giant with a stellar classification of B8 III.[3] It has a high rate of spin, showing a projected rotational velocity of 196 km/s.[5] The star has 4.1[5] times the mass of the Sun but 9.5[1] times the Sun's radius. It is radiating 326[1] times as much luminosity as the Sun from its photosphere at an effective temperature of 7,961 K.[1]

References

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

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External links

Template:Stars of Aries

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