Omega Carinae, a blue giant star in Carina
Omega Carinae is a blue giant star in the constellation Carina. At 342 light years away, it is the 230th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.29.
Omega Carinae (HIP 50099)
Omega Carinae is a blue giant star in the constellation Carina. At 342 light years away, it is the 230th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 3.29. It is moving through the Galaxy at a speed of 21.4 km/s relative to the Sun and is part of the Lower Centaurus Crux moving group. Its projected Galactic orbit carries it between 23,500 and 24,300 light years from the center of the Galaxy.
Sky position: RA 10h 13.7m, Dec -70° 2.4'
Common designations: Omega Carinae, HIP 50099, HD 89080
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Brightest stars in Carina:
(list all)
1
| -0.62
) Canopus
| Rank | Mag. | Star |
| 2 | 1.67 | Miaplacidus |
| 3 | 1.86 | Avior |
| 4 | 2.21 | Tureis |
| 5 | 2.74 | Theta Carinae |
| 6 | 2.92 | Upsilon Carinae |
7
| 3.29
) Omega Carinae
| Rank | Mag. | Star |
| 8 | 3.30 | p Carinae |
| 9 | 3.39 | q Carinae |
| 10 | 3.43 | a Carinae |
| 11 | 3.46 | chi Carinae |
| 12 | 3.69 | l Carinae |
| 13 | 3.78 | u Carinae |
| 14 | 3.81 | s Carinae |
| 15 | 3.84 | c Carinae |
| 16 | 3.93 | x Carinae |
| 17 | 3.96 | i Carinae |
Galactic Orbit of Omega Carinae
(compared to the Sun)
E
ccentricity: 1.6% vs. 16.0%Angle φ : 108.3°vs. 26.0°
Semi-major axis : 7,331 pc vs. 8,686 pc
Semi-minor axis: 7,330 pc vs. 8,574 pc
Focus-to-center
: 114 pcvs. 1,388 pcSemilatus rectum : 7,329 pc vs. 8,464 pc
Perigalacticon: 7,216 pc vs. 7,297 pc
Apogalacticon
: 7,445 pcvs. 10,074 pcSome Tabulated XHIP Data for Omega Carinae
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 153.43449551° ±0.08 mas | -36.20 ±0.70 mas/yr. |
| Declination: | -70.03792176° ±0.08 mas | 10.10 ±0.70 mas/yr. |
| Galactic Longitude: | 290.16388021° | -35.41 mas/yr. |
| Galactic Latitude: | -11.17955276° | -12.60 mas/yr. |
Parallax: 9.54 ± 0.09 mas
Spectrography
Spectral Type: B8IIIe shell 1982ApJS...50...55S.
Radial Velocity: 10.40 ±2.50 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
2.91
-2.19
B
3.22
-1.89
V
3.29
-1.81
R
I
3.32
-1.78
J
3.43
-1.67
H
3.42
-1.68
K
3.45
-1.65
B-V: -0.07 V-I: -0.03
Derivations
Heliocentric distance: 104.81 pc (fitted to cluster)
Galactocentric distance: 7,365 pc
Transverse velocity: 18.7 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 35.4 pc | -96.5 pc | -20.3 pc |
| Velocity (U, V, W) | -13.4 km/s | -14.5 km/s | -8.2 km/s |