Theta1 Crucis
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| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Crux |
| Right ascension | 12h 03m 01.5010s[1] |
| Declination | −63° 18′ 46.548″[1] |
| Apparent magnitude (V) | 4.30 |
| Characteristics | |
| Spectral type | Am |
| U−B color index | +0.04[2] |
| B−V color index | +0.27[2] |
| Astrometry | |
| Radial velocity (Rv) | −2.4[3] km/s |
| Proper motion (μ) | RA: −152.53[1] mas/yr Dec.: 6.10[1] mas/yr |
| Parallax (π) | 14.19 ± 0.54[1] mas |
| Distance | 230 ± 9 ly (70 ± 3 pc) |
| Other designations | |
Theta1 Crucis (θ1 Cru, Theta1 Crucis) is a spectroscopic binary star in the constellation Crux. It has an apparent magnitude of 4.32m. The spectral class of the star is Am. Theta1 Crucis is located at 230 light-years from the Sun.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Perryman, M. A. C.; et al (April 1997). "The HIPPARCOS Catalogue". Astronomy & Astrophysics 323: L49–L52. Bibcode:1997A&A...323L..49P.
- ↑ 2.0 2.1 Johnson, H. L.; et al. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory 4 (99). Bibcode:1966CoLPL...4...99J.
- ↑ Wilson, Ralph Elmer (1953). General Catalogue of Stellar Radial Velocities. Washington: Carnegie Institution of Washington. Bibcode:[http://adsabs.harvard.edu/abs/1953QB901.W495..... 1953QB901.W495.....]
- ↑ "HR 4599 -- Spectroscopic binary". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 2007-01-04.
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