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 | |
| 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 2 3 SIMBAD, 10 Ursae Majoris (accessed 20 November 2012)
- 1 2 "10 Ursae Majoris (HIP 44248)". Ashland Astronomy Studio. Retrieved 3 Jan 2013.
- ↑ Bagnall, Philip M. (2012). The Star Atlas Companion: What You Need to Know about the Constellations. New York, New York: Springer. p. 281. ISBN 1-4614-0830-X.
- 1 2 Kaler, James B. "10 UMA (10 Ursae Majoris) = HR 3579 Lyncis". Stars. University of Illinois. Retrieved 9 March 2016.
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