Theta Cephei

from Wikipedia, the free encyclopedia
Star
θ Cephei
Theta Cephei in the constellation Cepheus
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Cepheus
Right ascension 20 h 29 m 34.89 s
declination + 62 ° 59 ′ 38.8 ″
Apparent brightness 4.2715 mag
Typing
Spectral class A7 III C
Astrometry
Radial velocity -6.8 ± 0.11 km / s
parallax (23.90 ± 0.60)  mas
distance 136  ly
41.8  pc  
Proper movement 
Rec. Share: (45.07 ± 0.52)  mas / a
Dec. portion: (−12.59 ± 0.60)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name η Cephei
Flamsteed name 2 Cephei
Bonn survey BD +62 1821
Bright Star Catalog HR 7850 [1]
Henry Draper Catalog HD 198149 [2]
Hipparcos catalog HIP 101093 [3]
SAO catalog SAO 18897 [4]
Tycho catalog TYC 4237-2168-1 [5]
annotation
  1. ↑ Calculated from parallax.

Theta Cephei (θ Cep, θ Cephei) is a star of the northern circumpolar constellation Cepheus , it is also called Al Kidr .

The 4.2 mag bright Theta Cephei is located approx. 12 ° west of Alpha Cephei (Alderamin), behind Eta Cephei , and shines at a distance of approx. 136 light years .

Individual evidence

  1. ↑ a b c d Theta Cephei at Hipparcos. Retrieved December 24, 2016 .
  2. ↑ a b tet Cep - Spectroscopic binary. In: SIMBAD Astronomical Object Database. Center de Données astronomiques de Strasbourg, accessed December 25, 2016 .
  3. ^ RH Allen: Star Names: Their Lore and Meaning . Dover Publications Inc, New York, ISBN 0-486-21079-0 , pp. 157 . Look here