Tureis, a white supergiant star in Carina
Tureis is a white supergiant star in the constellation Carina. At 765 light years away, it is the 67th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 2.21.
Tureis (HIP 45556)
Tureis is a white supergiant star in the constellation Carina. At 765 light years away, it is the 67th brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 2.21. The iron abundance of Tureis is -0.23 (58.9% of the Sun). It is moving through the Galaxy at a speed of 27.6 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,700 and 24,200 light years from the center of the Galaxy.
Sky position: RA 9h 17.1m, Dec -59° 16.8'
Common designations: Tureis, Iota Carinae, HIP 45556, HD 80404
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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
| Rank | Mag. | Star |
| 5 | 2.74 | Theta Carinae |
| 6 | 2.92 | Upsilon Carinae |
| 7 | 3.29 | Omega Carinae |
| 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 Tureis
(compared to the Sun)
E
ccentricity: 1.0% vs. 16.0%Angle φ : -113.6°vs. 26.0°
Semi-major axis : 7,342 pc vs. 8,686 pc
Semi-minor axis: 7,341 pc vs. 8,574 pc
Focus-to-center
: 70 pcvs. 1,388 pcSemilatus rectum : 7,341 pc vs. 8,464 pc
Perigalacticon: 7,271 pc vs. 7,297 pc
Apogalacticon
: 7,412 pcvs. 10,074 pcSome Tabulated XHIP Data for Tureis
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 139.27261829° ±0.09 mas | -18.86 ±0.09 mas/yr. |
| Declination: | -59.27526115° ±0.09 mas | 11.98 ±0.09 mas/yr. |
| Galactic Longitude: | 278.45921322° | -21.70 mas/yr. |
| Galactic Latitude: | -7.01113309° | -5.32 mas/yr. |
Parallax: 4.26 ± 0.10 mas
Spectrography
Spectral Type: A7Ib 1989ApJS...70..623G.
Radial Velocity: 12.00 ±0.30 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
-0.23 dex
1992ApJS...79..303L, 1985ApJ...298..782L, 1984Ap.....20...57B.
Photometry
| band | magnitude | Abs. Mag. |
| U | ||
| B | 2.40 | -4.45 |
| V | 2.21 | -4.64 |
| R | ||
| I | 1.99 | -4.86 |
| J | 1.67 | -5.18 |
| H | 1.57 | -5.28 |
| K | 1.53 | -5.33 |
B-V: +0.19 V-I: +0.22
Derivations
Heliocentric distance: 234.59 pc (2.3% margin of error)
Galactocentric distance: 7,369 pc
Transverse velocity: 24.8 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 34.3 pc | -230.3 pc | -28.6 pc |
| Velocity (U, V, W) | -22.2 km/s | -14.6 km/s | -7.3 km/s |