Lambda Caeli (HIP 21998)

Lambda Caeli is an orange giant star in the constellation Caelum. At 735 light years away, it shines at an apparent visual magnitude of 6.24. It is moving through the Galaxy at a speed of 17.1 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,300 and 34,100 light years from the center of the Galaxy.

Sky position: RA 4h 43.7m, Dec -41 3.6'

Common designations: Lambda Caeli, HIP 21998, HD 30202, HR 1518

Galaxies
Calendar+Book Bundle


Makes an impressive gift!



Galactic Orbit of Lambda Caeli

(compared to the Sun)

Eccentricity: 16.9% vs. 16.0%

Angle φ : 11.8 vs. 26.0

Semi-major axis : 8,962 pc vs. 8,686 pc

Semi-minor axis: 8,833 pc vs. 8,574 pc

Focus-to-center: 1,510 pc vs. 1,388 pc

Semilatus rectum : 8,707 pc vs. 8,464 pc

Perigalacticon: 7,452 pc vs. 7,297 pc

Apogalacticon: 10,471 pc vs. 10,074 pc
 


Some Tabulated XHIP Data for Lambda Caeli
(see also: SIMBAD)

Astrometry
2007A&A...474..653V
  Position Proper Motion
Right Ascension: 70.93443171 0.28 mas 10.98 0.33 mas/yr.
Declination: -41.06481334 0.26 mas 10.93 0.29 mas/yr.
     
Galactic Longitude: 245.12298219 -10.41 mas/yr.
Galactic Latitude: -40.87295266 11.47 mas/yr.

Parallax: 4.41 0.32 mas


Spectrography

Spectral Type: K3/4III 1978MSS...C02....0H.

Radial Velocity: -4.30 0.40 km/s [A rating] 2006AstL...32..759G.

Iron Abundance [Fe/H]: n/a
 



Photometry
 
band magnitude Abs. Mag.
U
B 7.71 0.94
V 6.24 -0.52
R
I 4.92 -1.85
J 4.04 -2.72
H 3.18 -3.58
K 3.00 -3.76

  B-V: +1.47       V-I: +1.32


Derivations

Heliocentric distance: 225.33 pc (7.3% margin of error)

Galactocentric distance: 7,474 pc

Transverse velocity: 16.5 km/s

3D heliocentric position and motion:

toward:   

Galactic center Galactic rotation North Galactic Pole
Position ( X, Y, Z) -71.7 pc -154.6 pc -147.5 pc
Velocity (U, V, W) -12.1 km/s 0.4 km/s 12.1 km/s

< Previous | HIP  21998 | Next >