54 Leonis

From Wikipedia, the free encyclopedia
Jump to: navigation, search
54 Leonis A/B
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Leo
Right ascension 10h 55m 36.823s
Declination +24° 44′ 59.28″
Apparent magnitude (V) 4.50
Characteristics
Spectral type A1V + A2V n
Astrometry
Distance 290 ly
(88.9 pc)
Absolute magnitude (MV) –0.29[1]
Other designations
54 Leo A/B, BD+25 2314A/B, CCDM J10556+2445A/B, HD 94601, HIP 53417 A/B, HR 4259, Struve 1487 A/B, SAO 81583

54 Leonis A/B is a binary star in the Leo constellation. It is located about 290 lightyears or 89 parsecs from the Earth.

This star has 2.59 times the mass of the Sun, with a projected rotational velocity of 182 km s–1.[1] Asteroid 729 Watsonia Occults HIP 53417 2013 Mar 03 01:48.

References[edit]

  1. ^ a b Pizzolato, N.; Maggio, A.; Sciortino, S. (September 2000), "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases", Astronomy and Astrophysics 361: 614–628, Bibcode:2000A&A...361..614P 

External links[edit]