54 Leonis

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
Distance290 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

  1. 1 2 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

This article is issued from Wikipedia - version of the 4/18/2016. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.