10 Ursae Majoris

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10 Ursae Majoris
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Lynx
Right ascension 09h 00m 38.38067s [1]
Declination +41° 46′ 58.6051″ [1]
Apparent magnitude (V) 3.96
Absolute magnitude (V) 2.93[2]
Distance 52[2] ly
(16 pc)
Spectral type F4V [1]
Other designations
10 UMa, Gliese 332, HD 76943, HIP 44248, HR 3579, SAO 42642
Database references
SIMBAD data

10 Ursae Majoris (10 UMa) is a star in the constellation Lynx. Its apparent magnitude is 3.96.

It is the third brightest star in Lynx. Originally in the neighbouring constellation Ursa Major, it became part of Lynx with the official laying down of the constellation borders.[3] Appearing to be of magnitude 3.97, it can be split by a telescope to reveal a yellow-white main sequence star of spectral type F4V of magnitude 4.11 and a star very similar to the Sun of spectral class G5V and magnitude 6.18. The two are 10.6 au apart and orbit each other every 21.78 years.[4]

The total system mass of 2.54 solar masses, with the primary being 1.44 solar masses, and secondary 1.1 solar masses.[4]

References

  1. ↑ 1.0 1.1 1.2 SIMBAD, 10 Ursae Majoris (accessed 20 November 2012)
  2. ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.


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