T Crucis

Last updated
T Crucis
Observation data
Epoch J2000.0       Equinox J2000.0
Constellation Crux
Right ascension 12h 21m 21.12807s [1]
Declination −62° 16 53.8790 [1]
Apparent magnitude  (V)6.32 - 6.83 [2]
Characteristics
Evolutionary stage F6-G2Ib [3]
Variable type δ Cep [2]
Astrometry
Proper motion (μ)RA: −10.915 [1]   mas/yr
Dec.: −0.471 [1]   mas/yr
Parallax (π)1.2106 ± 0.0142  mas [1]
Distance 2,690 ± 30  ly
(826 ± 10  pc)
Absolute magnitude  (MV)−3.49 [4]
Details
Mass 7.2 [1]   M
Radius 55 [1]   R
Luminosity 2,601 [1]   L
Surface gravity (log g)1.52 [1]   cgs
Temperature 4,676 [1]   K
Metallicity [Fe/H]0.09 [4]   dex
Age 57 [4]   Myr
Other designations
CD−61°3428, HD  107447, HIP  60259, SAO  251861 [5]
Database references
SIMBAD data
Light curve of T Crucis recorded by NASA's Transiting Exoplanet Survey Satellite (TESS) T Crucis TESS lightcurve.png
Light curve of T Crucis recorded by NASA's Transiting Exoplanet Survey Satellite (TESS)

T Crucis is a star in the constellation Crux. A Cepheid variable, its apparent magnitude ranges from 6.32 to 6.83 over 6.73331 days. [3] It is a yellow-white supergiant that pulsates between spectral types F6Ib and G2Ib. [3] The radius is 55 times that of the Sun.

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<span class="mw-page-title-main">R Crucis</span> Variable star in the constellation Crux

R Crucis is a variable star in the southern constellation of Crux. It has a yellow-white hue and is often too faint to see with the naked eye, having an apparent visual magnitude that fluctuates around 6.89. This object is located at a distance of approximately 1,600 light years from the Sun based on parallax, but it is drifting closer with a radial velocity of −13.5 km/s.

<span class="mw-page-title-main">AH Velorum</span> Yellow-white hued star in the constellation Vela

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<span class="mw-page-title-main">BH Crucis</span> Star in the constellation Crux

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<span class="mw-page-title-main">HD 23753</span> Star in the constellation Taurus

HD 23753 is a single star in the equatorial zodiac constellation of Taurus, and is a member of the Pleiades open cluster. It is dimly visible to the naked eye with an apparent visual magnitude of 5.44. The distance to this star, as determined from its annual parallax shift of 7.7 mas, is about 420 light years. It is moving further from the Earth with a heliocentric radial velocity of +8 km/s. The star is positioned near the ecliptic and so is subject to lunar occultations.

<span class="mw-page-title-main">DS Crucis</span> Star in the constellation Crux

DS Crucis is a variable star near the open cluster NGC 4755, which is also known as the Kappa Crucis Cluster or Jewel Box Cluster. It is in the constellation Crux.

<span class="mw-page-title-main">X Cygni</span> Variable star in the constellation Cygnus

X Cygni is a variable star in the northern constellation of Cygnus, abbreviated X Cyg. This is a Delta Cephei variable that ranges in brightness from an apparent visual magnitude of 5.85 down to 6.91 with a period of 16.386332 days. At it brightest, this star is dimly visible to the naked eye. The distance to this star is approximately 628 light years based on parallax measurements. It is drifting further away with a radial velocity of 8.1 km/s. This star is a likely member of the open cluster Ruprecht 173.

References

  1. 1 2 3 4 5 6 7 8 9 10 Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics . arXiv: 2208.00211 . doi: 10.1051/0004-6361/202243940 . Gaia DR3 record for this source at VizieR.
  2. 1 2 Samus', N. N; Kazarovets, E. V; Durlevich, O. V; Kireeva, N. N; Pastukhova, E. N (2017). "General catalogue of variable stars". Astronomy Reports. GCVS 5.1. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085. S2CID   125853869.
  3. 1 2 3 Watson, Christopher (4 January 2010). "T Crucis". AAVSO Website. American Association of Variable Star Observers . Retrieved 12 March 2014.
  4. 1 2 3 Acharova, I. A.; et al. (2012). "Galactic restrictions on iron production by various types of supernovae". Monthly Notices of the Royal Astronomical Society. 420 (2): 1590. arXiv: 1111.2152 . Bibcode:2012MNRAS.420.1590A. doi:10.1111/j.1365-2966.2011.20161.x. S2CID   118404944.
  5. "V* T Cru". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2023-01-11.