29 Arietis
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 32m 54.1405s[1] |
| Declination | +15° 02′ 04.395″[1] |
| Apparent magnitude (V) | 6.001[2] |
| Distance | 98 ± 1 ly (29.9 ± 0.3[1] pc) |
| Spectral type | F8 V[3] |
| Other designations | |
29 Arietis (abbreviated 29 Ari) is a triple star[4] system in the northern constellation of Aries. 29 Arietis is the Flamsteed designation. It has an annual parallax shift of 33.40 ± 0.36 mas,[1] which corresponds to a physical distance of approximately 98 light-years (30 parsecs) from Earth. The star is just barely visible to the naked eye with an apparent visual magnitude of 6.0.[2]
The core of the system is formed by a close spectroscopic binary with an angular separation of 3.892 mas and an orbital period of 19.379 days. The larger member of this pair has 114% of the mass of the Sun, while its companion has 88% of the Sun's mass. Orbiting the pair at an angular separation of 1.422 arcseconds over a period of 164 years, the tertiary component has 52% of the Sun's mass.[4]
References
- 1 2 3 4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752
, doi:10.1051/0004-6361:20078357. - 1 2 3 "29 Ari -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, retrieved 2012-08-14.
- ↑ Harlan, E. A. (September 1969), "MK classifications for F- and G-type stars. I.", Astronomical Journal, 74: 916–919, Bibcode:1969AJ.....74..916H, doi:10.1086/110881.
- 1 2 Tokovinin, A.; et al. (May 2006), "Tertiary companions to close spectroscopic binaries", Astronomy and Astrophysics, 450 (2): 681–693, Bibcode:2006A&A...450..681T, arXiv:astro-ph/0601518 , doi:10.1051/0004-6361:20054427.