HD 200156 (HIP 103785)

HD 200156 is a white main-sequence star in the constellation Aquarius. At 354 light years away, it shines at an apparent visual magnitude of 8.76. The star's age is unknown but is certainly no greater than 1.5 billion years. The iron abundance of HD 200156 is -0.02 (95.5% of the Sun). It is moving through the Galaxy at a speed of 29.5 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,700 and 26,000 light years from the center of the Galaxy.

Sky position: RA 21h 1.9m, Dec -4 40.2'

Common designations: HIP 103785, HD 200156

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Galactic Orbit of HD 200156

(compared to the Sun)

Eccentricity: 4.6% vs. 16.0%

Angle φ : -33.9 vs. 26.0

Semi-major axis : 7,630 pc vs. 8,686 pc

Semi-minor axis: 7,622 pc vs. 8,574 pc

Focus-to-center: 350 pc vs. 1,388 pc

Semilatus rectum : 7,614 pc vs. 8,464 pc

Perigalacticon: 7,279 pc vs. 7,297 pc

Apogalacticon: 7,980 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for HD 200156
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 315.46838466 1.00 mas 53.17 0.82 mas/yr.
Declination: -4.66603057 0.50 mas -18.75 0.46 mas/yr.
     
Galactic Longitude: 44.54352665 9.37 mas/yr.
Galactic Latitude: -31.00545913 -55.60 mas/yr.

Parallax: 9.04 1.11 mas


Spectrography

Spectral Type: F2 V 1999MSS...C05....0H.

Radial Velocity: -5.22 0.36 km/s [A rating] 2011AAS...21743412C.

Iron Abundance [Fe/H]: -0.02 0.08 dex  2011A&A...530A.138C.
 



Photometry
 
band magnitude Abs. Mag.
U
B 9.19 4.00
V 8.76 3.58
R
I 8.27 3.09
J 7.94 2.76
H 7.74 2.56
K 7.70 2.52

  B-V: +0.43       V-I: +0.49


Derivations

Heliocentric distance: 108.65 pc (12.3% margin of error)

Galactocentric distance: 7,334 pc

Transverse velocity: 29.0 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 66.4 pc 65.3 pc -56.0 pc
Velocity (U, V, W) -17.1 km/s -10.0 km/s -21.9 km/s

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