Astronomy:10 Arietis
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 03m 39.34547s[1] |
| Declination | +25° 56′ 07.7129″[1] |
| Apparent magnitude (V) | 5.63[2] |
| Characteristics | |
| Spectral type | F8 IV + F9 V[2] |
| Astrometry | |
| Radial velocity (Rv) | +12.9[3] km/s |
| Proper motion (μ) | RA: +128.01[1] mas/yr Dec.: +11.19[1] mas/yr |
| Parallax (π) | 20.53 ± 0.67[1] mas |
| Distance | 159 ± 5 ly (49 ± 2 pc) |
| Absolute magnitude (MV) | 2.21[3] |
| Orbit[4] | |
| Period (P) | 325 yr |
| Semi-major axis (a) | 1.39″ |
| Eccentricity (e) | 0.59 |
| Inclination (i) | 51° |
| Longitude of the node (Ω) | 20.5° |
| Periastron epoch (T) | B1931.6 |
| Argument of periastron (ω) (secondary) | 165° |
| Details | |
| Metallicity [Fe/H] | –0.10[3] dex |
| Age | 1.9[3] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
10 Arietis is a binary star[6] system in the northern constellation of Aries. 10 Arietis is the Flamsteed designation. It is visible to the naked eye as a dim, yellow-white hued star with a combined apparent visual magnitude of 5.63.[2] Based upon parallax measurements, it is located around 159 light years away from the Sun. The system is receding from the Earth with a heliocentric radial velocity of +12.9 km/s.[3]
The pair orbit each other with a period of approximately 325 years and an eccentricity of 0.59. The semimajor axis of the orbit has an angular size of 1.39″.[4] The magnitude 5.92[6] primary, designated component A, is an aging F-type subgiant star with a stellar classification of F8 IV.[2] The secondary star, component B, is a magnitude 7.95[6] F-type main-sequence star with a stellar classification of F9 V.[2] There is a magnitude 13.5 visual companion, designated component C, at an angular separation of 95.30″ along a position angle of 150°, as of 2001.[7]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics 474 (2): 653–664, doi:10.1051/0004-6361:20078357, Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 2.3 2.4 Edwards, T. W. (April 1976), "MK classification for visual binary components", Astronomical Journal 81: 245–249, doi:10.1086/111879, Bibcode: 1976AJ.....81..245E.
- ↑ 3.0 3.1 3.2 3.3 3.4 Holmberg, J.; Nordström, B.; Andersen, J. (July 2009), "The Geneva-Copenhagen survey of the solar neighbourhood. III. Improved distances, ages, and kinematics", Astronomy and Astrophysics 501 (3): 941–947, doi:10.1051/0004-6361/200811191, Bibcode: 2009A&A...501..941H.
- ↑ 4.0 4.1 Heintz, W. D. (August 1996), "Observations of Double Stars and New Pairs. XVII", Astrophysical Journal Supplement 105: 475, doi:10.1086/192324, Bibcode: 1996ApJS..105..475H
- ↑ "10 Ari". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=10+Ari.
- ↑ 6.0 6.1 6.2 Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E.
- ↑ Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466, doi:10.1086/323920, Bibcode: 2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22
External links
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Coordinates: 
02h 03m 39.344s, +25° 56′ 07.70″
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