Rho Arietis

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The Bayer designation Rho Arietis (ρ Ari / ρ Arietis) is shared by three stars, ρ¹ Arietis through ρ³ Arietis, in the constellation Aries. In some instances ρ³ Ari is called simply ρ Ari.


[edit] ρ¹ Arietis

ρ¹ Arietis
Observation data
Epoch J2000.0
Constellation
(pronunciation)
Aries
Right ascension 02h 54m 55.18s
Declination +17° 44' 05.0"
Apparent magnitude (V) +7.01
Absolute magnitude (V) +2.10
Distance 313 ± 34 ly
(96 ± 11 pc)
Spectral type A3
Other designations
44 Arietis, HD 18091,
BD+17°454, HIP 13579,
SAO 93178, GC 3492

Rho-1 Arietis is a white A-type star with an apparent magnitude of +7.01. It is approximately 313 light years from Earth.


[edit] ρ² Arietis

ρ² Arietis
Observation data
Epoch J2000.0
Constellation
(pronunciation)
Aries
Right ascension 02h 55m 48.5s
Declination +18° 19' 54"
Apparent magnitude (V) +5.76
Absolute magnitude (V) +0.29
Distance 404 ± 44 ly
(124 ± 14 pc)
Spectral type M6-III:
Other designations
45 Arietis, RZ Arietis,
HR 867, HD 18191,
BD+17°457, HIP 13654,
SAO 93189, GC 3517

Rho-2 Arietis is a M-type red giant with a mean apparent magnitude of +5.76. It is approximately 404 light years from Earth. It is classified as a semiregular variable star and its brightness varies from magnitude +5.62 to +6.01 with a period of 30 days. It is also known by its variable star designation, RZ Arietis.


[edit] ρ³ Arietis

ρ³ Arietis
Observation data
Epoch J2000.0
Constellation
(pronunciation)
Aries
Right ascension 02h 56m 26.1s
Declination +18° 01' 23"
Apparent magnitude (V) +5.58
Absolute magnitude (V) +2.86
Distance 115 ± 4 ly
(35 ± 1 pc)
Spectral type F6V
Other designations
46 Arietis, HR 869,
HD 18256, BD+17°458,
FK5 2204, HIP 13702,
SAO 93195, GC 3532

Rho-3 Arietis is a yellow-white F-type main sequence dwarf with an apparent magnitude of +5.58. It is approximately 115 light years from Earth.