HR 5955 (HIP 78868)

HR 5955 is an orange giant star in the constellation Apus. At 290 light years away, it shines at an apparent visual magnitude of 5.70. It is moving through the Galaxy at a speed of 58.9 km/s relative to the Sun. Its projected Galactic orbit carries it between 15,700 and 29,800 light years from the center of the Galaxy. It came closest to the Sun 1.2 million years ago when it had brightened to magnitude 4.42 from a distance of 161 light years.

Sky position: RA 16h 5.9m, Dec -72 24'

Common designations: HIP 78868, HD 143346, HR 5955

Moon Calendar Cards

6" x 11" Postcards



Galactic Orbit of HR 5955

(compared to the Sun)

Eccentricity: 31.0% vs. 16.0%

Angle φ : 117.2 vs. 26.0

Semi-major axis : 6,966 pc vs. 8,686 pc

Semi-minor axis: 6,622 pc vs. 8,574 pc

Focus-to-center: 2,162 pc vs. 1,388 pc

Semilatus rectum : 6,295 pc vs. 8,464 pc

Perigalacticon: 4,804 pc vs. 7,297 pc

Apogalacticon: 9,128 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for HR 5955
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 241.48284138 0.20 mas -32.11 0.21 mas/yr.
Declination: -72.40107191 0.27 mas 70.49 0.31 mas/yr.
     
Galactic Longitude: 316.50879671 25.50 mas/yr.
Galactic Latitude: -14.87861835 73.14 mas/yr.

Parallax: 11.21 0.36 mas


Spectrography

Spectral Type: K1.5III CN1 1989ApJS...71..245K.

Radial Velocity: 49.00 0.40 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 6.87 2.12
V 5.70 0.95
R
I 4.69 -0.06
J 3.86 -0.89
H 3.24 -1.51
K 3.08 -1.67

  B-V: +1.17       V-I: +1.01


Derivations

Heliocentric distance: 89.10 pc (3.2% margin of error)

Galactocentric distance: 7,338 pc

Transverse velocity: 32.7 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) 62.5 pc -59.3 pc -22.9 pc
Velocity (U, V, W) 47.5 km/s -30.2 km/s 17.3 km/s

< Previous | HIP  78868 | Next >