Pi Arietis

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π Arietis
Observation data
Equinox J2000.0
Constellation Aries
Right ascension 02h 49m 17.5s
Declination +17° 27' 51"
Apparent magnitude (V) +5.26
Distance 600 ± 120 ly
(185 ± 37 pc)
Spectral type B6V
Other designations
42 Arietis, HR 836,
HD 17543, BD+16°355,
HIP 13165, SAO 93127,
GC 3378, ADS 2151,
CCDM 02493+1728

Pi Arietis (π Ari / π Arietis) is a star system in the constellation Aries. It is approximately 603 light years from Earth.

The primary component, π Arietis A, is a spectroscopic binary which is classified as a blue-white B-type main sequence dwarf with an apparent magnitude of +5.26. It's two components have an orbital period of 3.85 days and are separated by approximately 0.00004 arcseconds. At 3.2 arcseconds from the binary is π Arietis B, which is a white A-type main sequence star with an apparent magniutde of 8.8. It is probably an optical companion. At 25.2 arcseconds from A is π Arietis C, which is a magnitude +10.9 yellow-white F-type main sequence star.


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