Mu Arietis

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μ Arietis
Location of μ Arietis (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Aries
Right ascension 02h 42m 21.93980s[1]
Declination +20° 00′ 41.2612″[1]
Apparent magnitude (V) 5.74[2] (6.38/8.38/6.72/12.2)[3]
Characteristics
Spectral type A0 Vp + F2 V + A1 V[3]
U−B color index –0.03[4]
B−V color index –0.02[4]
Distance
340 ± 30 ly
(104 ± 9 pc)
Absolute magnitude (MV)+0.41[6]
Argument of periastron
(ω)
(secondary)		92.3 ± 1.7°
Details
Rotational velocity (v sin i)
175[8] km/s
SAO 93062.[9]
Database references
SIMBADdata

Mu Arietis,

Bortle Dark-Sky Scale
, this means it is faintly visible to the naked eye from dark suburban skies.

At the heart of this system is a close orbiting pair consisting of a magnitude 6.38

arcseconds. A third component, consisting of a magnitude 6.72 star with a classification of A1 V, is orbiting the inner pair with a period of 8.845 years and an eccentricity of 0.34. A smaller fourth component, at an angular separation of 19.1 arcseconds, has a magnitude of 12.2.[3]

References

  1. ^
    S2CID 18759600
    .
  2. ^
    Bibcode:1991A&AS...89..415O
    .
  3. ^
    S2CID 14878976
    .
  4. ^
    Bibcode:1960AnTok...6..148O
    .
  5. Bibcode:1968RGOB..135..385P
    .
  6. ^
    S2CID 119257644
    .
  7. ^
    doi:10.1086/118514
    .
  8. S2CID 18475298
    .
  9. ^ "mu. Ari". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-08-07.{{cite web}}: CS1 maint: postscript (link)

External links

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