31 Arietis
In this article, we will explore the fascinating world of 31 Arietis, addressing its most relevant and significant aspects. From its origins to its impact today, we will dive into an exhaustive analysis of 31 Arietis, delving into its implications and scope over time. Through this journey, we aim to shed light on 31 Arietis, offering a comprehensive and enriching vision for all those interested in acquiring greater knowledge about this topic. Thus, we will embark on an exciting and revealing journey, which will allow us to understand the importance of 31 Arietis in contemporary society and its relevance in various areas of daily life.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aries |
| Right ascension | 02h 36m 37.91730s[1] |
| Declination | +12° 26′ 51.4867″[1] |
| Apparent magnitude (V) | 5.75[2] (5.68 + 5.78)[3] |
| Characteristics | |
| Spectral type | F7 V + F7 V[3] |
| U−B color index | –0.05[4] |
| B−V color index | +0.47[4] |
| Astrometry | |
| Radial velocity (Rv) | +8.8 km/s |
| Proper motion (μ) | RA: +282.19[1] mas/yr Dec.: –86.84[1] mas/yr |
| Parallax (π) | 28.79±0.43 mas[1] |
| Distance | 113 ± 2 ly (34.7 ± 0.5 pc) |
| Absolute magnitude (MV) | 2.94[5] |
| Orbit[3] | |
| Period (P) | 3.80 ± 0.10 yr |
| Semi-major axis (a) | 0.077 ± 0.001″ |
| Eccentricity (e) | 0.017 ± 0.002 |
| Inclination (i) | 112.7 ± 0.5° |
| Longitude of the node (Ω) | 145.0 ± 0.5° |
| Periastron epoch (T) | 2010.28 ± 0.15 |
| Argument of periastron (ω) (secondary) | 3.7 ± 15.0° |
| Details | |
| Temperature | 6,137[5] K |
| Metallicity | –0.25[5] dex |
| Rotational velocity (v sin i) | 5[6] km/s |
| Age | 2.8[5] Gyr |
| Other designations | |
| BD+11 360, FK5 2179, HD 16234, HIP 12153, HR 763, SAO 93022, WDS J02366+1227.[4] | |
| Database references | |
| SIMBAD | data |
31 Arietis (abbreviated 31 Ari) is a binary star in the northern constellation of Aries. 31 Arietis is the Flamsteed designation. The two members of this system orbit each other with a period of 3.80 years and an eccentricity of 0.017. Both components of the system are F-type main sequence stars with a stellar classification of F7 V.[3] The pair have an apparent visual magnitude of 5.75,[2] which is just bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 28.79 mas,[1] the distance to this system is approximately 113 light-years (35 parsecs). The system is located near the ecliptic, so it is subject to occultation by the Moon.[7] The dynamical mass of the system is 3.36 ± 0.04 M☉.[3]
References
- ^ a b c d e f van Leeuwen, F. (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357, S2CID 18759600.
- ^ a b Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.
- ^ a b c d e Docobo, J. A.; Tamazian, V. S.; Malkov, O. Yu.; Campo, P. P.; Chulkov, D. A. (June 2016). "Improved orbits and parallaxes for eight visual binaries with unrealistic previous masses using the Hipparcos parallax". Monthly Notices of the Royal Astronomical Society. 459 (2): 1580–1585. arXiv:1609.03392. Bibcode:2016MNRAS.459.1580D. doi:10.1093/mnras/stw709.
- ^ a b c "31 Ari". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2012-08-14.
- ^ a b c d 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, arXiv:0811.3982, Bibcode:2009A&A...501..941H, doi:10.1051/0004-6361/200811191, S2CID 118577511.
- ^ Bernacca, P. L.; Perinotto, M. (1970), "A catalogue of stellar rotational velocities", Contributi Osservatorio Astronomico di Padova in Asiago, 239 (1): 1, Bibcode:1970CoAsi.239....1B.
- ^ Richichi, A.; et al. (January 2016), "Lunar Occultations of 18 Stellar Sources from the 2.4 m Thai National Telescope", The Astronomical Journal, 151 (1): 5, Bibcode:2016AJ....151...10R, doi:10.3847/0004-6256/151/1/10, S2CID 119258140, 10.
External links
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