Upsilon Ursae Majoris

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υ Ursae Majoris
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Ursa Major
Right ascension 09h 50m 59.4s
Declination +59° 02' 19"
Apparent magnitude (V) +3.78
Distance 115 ± 3 ly
(35 ± 1 pc)
Spectral type F2IV
Other designations
29 Ursae Majoris, HR 3888,
HD 84999, BD+59 1268,
FK5 368, HIP 48319,
SAO 27401, GC 13540,
ADS 7534, CCDM 09510+5902

Upsilon Ursae Majoris (υ UMa / υ Ursae Majoris) is a binary star in the constellation Ursa Major. It is approximately 115 light years from Earth.

The primary component, Upsilon Ursae Majoris A, is a yellow-white F-type subgiant with a mean apparent magnitude of +3.78. It is classified as a Delta Scuti type variable star and its brightness varies from magnitude +3.68 to +3.86 with a period of 3.18 hours. The companion, Upsilon Ursae Majoris B is a magnitude +11.5 star, 11.3 arcseconds away from the primary.


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