Chi 1 Orionis

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Double star
χ 1 Orionis
Chi 1 orionis diagram.jpg
Position of χ 1 in the constellation Orion
Observation
dates equinox :  J2000.0 , epoch : J2000.0
AladinLite
Constellation Orion
Right ascension 05 h 54 m 23.0 s
declination + 20 ° 16 ′ 34 ″
Apparent brightness  4.39 likes
Astrometry
Radial velocity (−13.1 ± 0.2) km / s
parallax (115.4 ± 0.3) mas
distance  (28.26 ± 0.07) Lj
((8.663 ± 0.020) pc )
Proper movement :
Rec. Share: (−162.54 ± 0.28) mas / a
Dec. portion: (−99.51 ± 0.16) mas / a
orbit 
period (5136 ± 12) d
eccentricity 0.45 ± 0.01
Epoch of the periastron JD 2451463 ± 17
Argument of the periapsis 111 ° ± 1 °
Individual data
Names A; B.
Typing:
Spectral class A. G0 V
Physical Properties:
Dimensions A. (1.02 ± 0.08) M ☉
B.
radius A. 1.45 R ☉
B.
Luminosity A. 1.1 L ☉
B.
Effective temperature A. 5940 K
B.
Metallicity [Fe / H] A. −0.07 ± 0.07
B.
Rotation time A. 24.5 days d
B.
Age approx. 100 million
Other names
and catalog entries
Bayer name χ 1 Orionis
Flamsteed name 54 Orionis
Bonn survey BD + 20 ° 1162
Bright Star Catalog HR 2047 [1]
Henry Draper Catalog HD 39587 [2]
SAO catalog SAO 77705 [3]
Tycho catalog TYC 1320-2118-1 [4]
Hipparcos catalog HIP 27913 [5]
WDS catalog WDS 05544 + 2017
Further designations: FY 222 • LTT 11743

Chi 1 Orionis (χ 1 Orionis / χ 1 Ori) is a double star system in the constellation Orion . The period of rotation of the system is around 14 years, the major semi-axis measures approx. 95 mas.

It is believed that Chi 1  Orionis is a member of the Ursa Major Movement Cluster.

Web links

swell

  1. ↑ a b Hipparcos catalog (ESA 1997)
  2. ↑ Pulkovo radial velocities for 35493 HIP stars
  3. ^ Hipparcos, the New Reduction (van Leeuwen, 2007)