56 Arietis

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Template:Short description

56 Arietis
File:SXAriLightCurve.png
A light curve for 56 Arietis from STEREO spacecraft data. Adapted from Wraight et al. (2012)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension Template:RA[2]
Declination Template:DEC[2]
Apparent magnitude (V) 5.79[3] (5.75 – 5.81)[4]
Characteristics
Spectral type B9pSi[5]
U−B Template:Engvar −0.42[3]
B−V Template:Engvar −0.12[3]
Variable type SX Ari[4]
Astrometry
Radial velocity (Rv)+18.0[6] km/s
Proper motion (μ) RA: Script error: No such module "val". mas/yr[2]
Dec.: Script error: No such module "val". mas/yr[2]
Parallax (π)7.8671±0.0651 mas[2]
DistanceTemplate:Rnd ± Template:Rnd ly
(Template:Rnd ± Template:Rnd pc)
Absolute magnitude (MV)+0.25[7]
Details
MassScript error: No such module "val".[8] Template:Solar mass
RadiusScript error: No such module "val".[8] Template:Solar radius
LuminosityScript error: No such module "val".[8] Template:Solar luminosity
Surface gravity (log g)3.97[9] cgs
TemperatureScript error: No such module "val".[8] K
Metallicity [Fe/H]+0.45[10] dex
Rotation0.7278972 days[7]
Rotational velocity (v sin i)Script error: No such module "val".[8] km/s
Age174[11] Myr
Metallicity [Fe/H]{{{metal_fe2}}} dex
Other designations
Template:Odlist[12]
Database references
SIMBADdata

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56 Arietis is a single,[13] variable star in the northern zodiac constellation of Aries. It has the variable star designation SX Arietis, while 56 Arietis is the Flamsteed designation. This object is visible to the naked eye as a faint, blue-white hued point of light with a baseline apparent visual magnitude of 5.79.[3] The estimated distance to this star is approximately Script error: No such module "convert"., based on parallax,[2] and it is drifting further away with a radial velocity of +18 km/s.[6]

This is a magnetic, chemically peculiar star of the silicon type with a stellar classification of B9pSi,[5] and it has a rapid rotation period of 17.5 hours.[14] This period is increasing by about two seconds every hundred years.[15] The star displays evidence of a five year period for procession of its axis.[16] Sanford S. Provin discovered that 56 Arietis is a variable star in 1952, and reported the discovery in 1953.[17] It is the prototype of a class of variable stars known as SX Arietis variables, which are rotationally variable stars with strong magnetic fields. It ranges in brightness from 5.75 down to 5.81 with a cyclical period matching its rotation rate.[4]

References

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  1. ↑ Script error: No such module "Citation/CS1".
  2. ↑ a b c d e 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. ↑ a b Script error: No such module "citation/CS1".
  6. ↑ a b Script error: No such module "citation/CS1".
  7. ↑ a b Script error: No such module "citation/CS1".
  8. ↑ a b c d e Script error: No such module "Citation/CS1".
  9. ↑ Script error: No such module "Citation/CS1".
  10. ↑ Script error: No such module "Citation/CS1".
  11. ↑ Script error: No such module "Citation/CS1".
  12. ↑ Template:Cite simbad
  13. ↑ Script error: No such module "citation/CS1".
  14. ↑ Script error: No such module "citation/CS1".
  15. ↑ Script error: No such module "citation/CS1".
  16. ↑ Script error: No such module "citation/CS1".
  17. ↑ Script error: No such module "Citation/CS1".

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External links

Template:Stars of Aries

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