Theta Carinae

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Star
θ Carinae
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation Keel of the ship
Right ascension 10 h 42 m 57.4 s
declination −64 ° 23 ′ 40 ″
Apparent brightness 2.76 mag
Typing
B − V color index (−0.22) 
U − B color index (−1.01) 
R − I index (−0.23) 
Spectral class B0 Vp
Astrometry
Radial velocity (20.6 ± 1.1) km / s
parallax (7.16 ± 0.21)  mas
distance (455 ± 15)  ly
(140)  pc
Visual absolute brightness M vis (−3.22) mag
Proper movement 
Rec. Share: (−18.36 ± 0.23)  mas / a
Dec. portion: (12.03 ± 0.18)  mas / a
Physical Properties
Dimensions (15.3)  M ☉
radius (5.1)  R ☉
Luminosity

(22600)  L ☉

Effective temperature (31000 ± 1000)  K.
Other names
and catalog entries
Bayer name θ Carinae
Bright Star Catalog HR 4199 [1]
Henry Draper Catalog HD 93030 [2]
Hipparcos catalog HIP 52419 [3]
SAO catalog SAO 251083 [4]
Tycho catalog TYC 8965-1765-1 [5]
2MASS catalog 2MASS J10425739-6423400 [6]
Other names FK5 406

θ Carinae ( Theta Carinae ) is the brightest star of the open star cluster IC 2602 . Because of the similarity of this star cluster to the Pleiades , IC 2602 is sometimes referred to as the "southern Pleiades".

The star is located in the constellation Carina and is a peculiar main sequence star with spectral class B0Vp. It is located just over 450 LJ from Earth. The star also appears to be a spectroscopic binary star .

Individual evidence

  1. ^ New Reduction (van Leeuwen 2007). In: VizieR . Center de Données astronomiques de Strasbourg , accessed July 22, 2018 .
  2. ↑ a b c d e f g h i tet car. In: SIMBAD . Center de Données astronomiques de Strasbourg , accessed July 22, 2018 .
  3. ↑ a b J Silaj, J. D Landstreet: Accurate age determinations of several nearby open clusters containing magnetic Ap stars . In: Astronomy & Astrophysics . 566, 2014, p. A132. arxiv : 1407.4531 . bibcode : 2014A & A ... 566A.132S . doi : 10.1051 / 0004-6361 / 201321468 .
  4. ↑ a b c S. Hubrig, M. Briquet, T. Morel, M. Schöller, JF González, P. De Cat: New insights into the nature of the peculiar star θ Carinae . In: Astronomy & Astrophysics . 488, No. 1, September 2008, pp. 287-296. arxiv : 0807.2067 . bibcode : 2008A & A ... 488..287H . doi : 10.1051 / 0004-6361: 200809972 .