36 Andromedae

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Star
36 Andromedae
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Andromeda
Right ascension 00 h 54 m 58.11 s
declination + 23 ° 37 ′ 42 ″
Apparent brightness 5.46 likes
Typing
B − V color index 1.0 
U − B color index 0.9 
R − I index 0.5 
Spectral class K1 IV
Astrometry
Radial velocity 1.5 km / s
parallax (26.33 ± 0.65)  mas
distance (124 ± 3)  ly
(38.0 ± 0.9)  pc  
Visual absolute brightness M vis approx. 2.6 mag
Proper movement 
Rec. Share: (135.43 ± 1.00)  mas / a
Dec. portion: (−48.61 ± 0.48)  mas / a
Physical Properties
Other names
and catalog entries
Flamsteed name 36 Andromedae
Bonn survey BD + 22 ° 146
Bright Star Catalog HR 258 [1]
Henry Draper Catalog HD 5286 [2]
Hipparcos catalog HIP 4288 [3]
SAO catalog SAO 74359 [4]
annotation
  1. ↑ Calculated from apparent brightness and distance.

36 Andromedae (short 36 And ) is a star with the apparent magnitude of 5.46 mag in the constellation Andromeda . It is located between Eta and Zeta Andromedae. Its distance is about 124 light years . It is a narrow binary star system that cannot be resolved with the naked eye , the components of which, two yellow-orange sub-giants , 6.1 mag and 6.5 mag are bright. They reached their minimum distance in the periastron in 1957 when they were only 0.6 " apart; by 2040 their distance will have increased to about 1.4". They orbit each other in almost 168 years. The major semi-axis of its orbit is about 0.98 ", the eccentricity of the orbit about 0.31 and the orbit inclination about 44.6 °.

Individual evidence

  1. ↑ a b c d Hipparcos, the New Reduction (van Leeuwen, 2007)
  2. ↑ a b Hipparcos catalog (ESA 1997)
  3. ↑ a b c Bright Star Catalog
  4. ↑ John Sanford: The new cosmos star atlas . English original edition London 1989, German Stuttgart 1990, ISBN 3-440-06087-X , p. 11
  5. ↑ W. Matthew Muterspaugh et al. (2010): “The Phases Differential Astrometry Data Archive. II. Updated Binary Star Orbits and a Long Period Eclipsing Binary ” . The Astronomical Journal 140 (6), p. 1623-1630.