My Ursae Majoris

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Star
Tania Australis (μ Ursae Majoris)
μ Ursae Majoris is the lower star at the arrowhead.
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Big Bear
Right ascension 10 h 22 m 19.74 s
declination + 41 ° 29 ′ 58.3 ″
Apparent brightness 3.06 mag
Typing
B − V color index +1.59 
U − B color index +1.89 
R − I index +0.96 
Spectral class M0 III
Astrometry
Radial velocity (−20.4 ± 2.6) km / s
parallax (14.16 ± 0.54)  mas
distance (230 ± 9)  ly
(70.6 ± 2.7)  pc  
Visual absolute brightness M vis approx. −1.2 mag
Proper movement 
Rec. Share: (−81.47 ± 0.47)  mas / a
Dec. portion: (+35.34 ± 0.31)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name μ Ursae Majoris
Flamsteed name 34 Ursae Majoris
Bonn survey BD + 42 ° 2115
Bright Star Catalog HR 4069 [1]
Henry Draper Catalog HD 89758 [2]
Hipparcos catalog HIP 50801 [3]
SAO catalog SAO 43310 [4]
Tycho catalog TYC 3004-1418-1 [5]
Other names FK5  386
annotation
  1. ↑ estimated from apparent brightness and distance

μ Ursae Majoris ( My Ursae Majoris , μ UMa for short ) is a star in the constellation Great Bear . It is a giant of the spectral class M0 with an apparent magnitude of 3.1 mag. It is about 230 light years from the sun .

The star bears the historical proper name Tania Australis or El Phekrah . The word Tania means "the second (jump of the gazelle)", Australis (Latin) stands for "south".

The IAU has the historical proper names on July 20, 2016 Tania Australis also defined as standardized proper name for this star.

Individual evidence

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ a b c Bright Star Catalog
  3. ↑ Pulkovo radial velocities for 35493 HIP stars
  4. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)
  5. ↑ Bulletin of the IAU Working Group on Star Names, No. 1, July 2016. (PDF) Retrieved November 9, 2016 (English, 184 KiB).