Theta2 Crucis

Source: Wikipedia, the free encyclopedia.
For other stars with the name θ Crucis, see Theta Crucis.
θ2 Crucis

A light curve for Theta2 Crucis, plotted from TESS data[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Crux
Right ascension 12h 04m 19.22008s[2]
Declination −63° 09′ 56.5167″[2]
Apparent magnitude (V) 4.70 - 4.74[3]
Characteristics
Spectral type B3 V[4]
U−B color index −0.61[5]
B−V color index −0.08[5]
Variable type β Cep[3]
Distance
690 ± 20 ly
(211 ± 6 pc)
Absolute magnitude (MV)−2.35[7]
Semi-amplitude
(K1)
(primary)		51.3 km/s
Details
Myr
HR 4603, SAO 251717[11]
Database references
SIMBADdata

Theta2 Crucis,

spectroscopic binary star in the constellation Crux. This pair of stars complete an orbit every 3.4280 days and they have a low orbital eccentricity that is close to 0.0.[12] Theta2 Crucis is located at about 690 light-years from the Sun
.

Since a member of the system is a

B-type main sequence star with a stellar classification of B3 V,[4] although it has also been classified as a subgiant.[13] Evolutionary models show it at a late stage of its main sequence life.[2]

References

  1. ^ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Retrieved 6 December 2022.
  2. ^
    S2CID 244398875
    . Gaia DR3 record for this source at VizieR.
  3. ^ a b c Samus, N. N.; Durlevich, O. V.; et al. (January 2009). "General Catalogue of Variable Stars". VizieR. Retrieved 2010-05-19. Note: query for GCVS "tet 2 Cru".
  4. ^
    Bibcode:1975mcts.book.....H
    .
  5. ^
    Bibcode:1966CoLPL...4...99J
    .
  6. Bibcode:1953GCRV..C......0W
    .
  7. S2CID 119257644
    .
  8. S2CID 119387088
    .
  9. Bibcode:1970CoAsi.239....1B
    .
  10. S2CID 118629873
  11. ^ "V* tet02 Cru". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2010-05-19.
  12. Bibcode:1967PDAO...13..119B
    .
  13. Bibcode:2014yCat....1.2023S
    .
Retrieved from "https://en.wikipedia.org/w/index.php?title=Theta2_Crucis&oldid=1154751845"