Psi Ursae Majoris

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Star
ψ Ursae Majoris
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Big Bear
Right ascension 11 h 09 m 39.81 s
declination + 44 ° 29 ′ 54.6 ″
Apparent brightness 3 likes
Typing
B − V color index +1.14 
U − B color index +1.11 
R − I index +0.57 
Spectral class K1 III
Astrometry
Radial velocity (−3.7 ± 0.2) km / s
parallax (22.57 ± 0.14)  mas
distance (144.51 ± 0.90)  Lj
(44.31 ± 0.27)  pc  
Visual absolute brightness M vis −0.23 mag
Proper movement 
Rec. Share: (−62.02 ± 0.13)  mas / a
Dec. portion: (−27.41 ± 0.11)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name ψ Ursae Majoris
Flamsteed name 52 Ursae Majoris
Bonn survey BD + 45 ° 1897
Bright Star Catalog HR 4335 [1]
Henry Draper Catalog HD 96833 [2]
Hipparcos catalog HIP 54539 [3]
SAO catalog SAO 43629 [4]
Tycho catalog TYC 3012-2519-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
annotation
  1. ↑ Calculated from apparent brightness and distance.

Psi Ursae Majoris (ψ UMa / ψ Ursae Majoris) is a star in the constellation Great Bear .

In traditional Chinese astronomy, the star was called "Ta Tsun", which translates as "the wine barrel". Wasat , a star in the constellation Gemini , also had this name.

The orange giant star belongs to the spectral class K1III and has an apparent magnitude of +3.0 mag. It is approximately 145 light years from Earth .

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. ↑ NIGHT SHIFT - club magazine of the Amateur Astronomical Association Göttingen eV (PDF; 922 kB)
  6. ^ The Brightest Stars