Lambda Caeli, an orange giant star in Caelum
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.
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
Galactic Orbit of
Lambda Caeli
(compared to the
Sun)
E
ccentricity: 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 pcvs. 1,388 pcSemilatus rectum : 8,707 pc vs. 8,464 pc
Perigalacticon: 7,452 pc vs. 7,297 pc
Apogalacticon
: 10,471 pcvs. 10,074 pcSome 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 |