Phi 2 Orionis

from Wikipedia, the free encyclopedia
Star
Phi 2 Orionis
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Orion
Right ascension 05 h 36 m 54.39 s
declination + 09 ° 17 ′ 26.4 ″
Apparent brightness 4.09 likes
Typing
B − V color index +0.95 
U − B color index +0.64 
R − I index +0.55 
Spectral class G8 III-IV
Astrometry
Radial velocity (99.0 ± 0.1) km / s
parallax (27.76 ± 0.27)  mas
distance (117.5 ± 1.1)  Lj
(36.02 ± 0.35)  pc  
Visual absolute brightness M vis +1.31 mag
Proper movement 
Rec. Share: (97.24 ± 0.28)  mas / a
Dec. portion: (−305.57 ± 0.17)  mas / a
Physical Properties
Other names
and catalog entries
Bayer name φ 2 Orionis
Flamsteed name 40 Orionis
Bonn survey BD + 9 ° 898
Bright Star Catalog HR 1907 [1]
Henry Draper Catalog HD 36822 [2]
Hipparcos catalog HIP 26366 [3]
SAO catalog SAO 112958 [4]
Tycho catalog TYC 701-2047-1 [5]Template: Infobox star / maintenance / specification of the TYC catalog
annotation
  1. ↑ Calculated from apparent brightness and distance.

Phi 2 Orionis ( φ 2 Orionis , φ 2 Ori , also Khad Posterior ) is a star, it is about 0.71 ° away from its companion Phi 1 Orionis (also Khad Prior ). Chadd (in English translation Khad ) comes from Arabic , the Arabic name of the two stars is Arabic خد الجوزاء chadd al-dschauza ' , DMG ḫadd al-ǧawzāʾ  ' cheek of the central '.

swell

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)