53 Aurigae
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Auriga |
| Right ascension | 06h 38m 23.00827s[1] |
| Declination | +28° 59′ 03.6700″[1] |
| Apparent magnitude (V) | 5.744[2] |
| Characteristics | |
| Spectral type | B9 Mn / F0m[3] |
| U−B color index | −0.07[4] |
| B−V color index | −0.02[4] |
| Astrometry | |
| Proper motion (μ) | RA: −16.61[1] mas/yr Dec.: −15.94[1] mas/yr |
| Parallax (π) | 9.41 ± 0.62 mas |
| Distance | 350 ± 20 ly (106 ± 7 pc) |
| Orbit[5] | |
| Period (P) | 38.90 yr |
| Semi-major axis (a) | 0.159″ |
| Eccentricity (e) | 0.557 |
| Inclination (i) | 119.5° |
| Longitude of the node (Ω) | 113.5° |
| Periastron epoch (T) | B 1976.73 |
| Argument of periastron (ω) (secondary) | 343.3° |
| Details | |
| 53 Aur A | |
| Mass | 2.49 ± 0.13[6] M☉ |
| Surface gravity (log g) | 4.0[3] cgs |
| Temperature | 10750[3] K |
| Rotational velocity (v sin i) | 25[3] km/s |
| 53 Aur B | |
| Surface gravity (log g) | 4.0[3] cgs |
| Temperature | 7250[3] K |
| Rotational velocity (v sin i) | 0[3] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
53 Aurigae is a binary star in the constellation Auriga. Its apparent magnitude is 5.74.[2] Parallax estimates made by the Hipparcos spacecraft put it at a distance of 350 light-years (106 parsecs) away.[1]
The two components of 53 Aurigae orbit each other every 39 years.[5] The primary component, 53 Aurigae A, is chemically peculiar since it contains higher-than-normal amounts of manganese,[3] but also europium, chromium, and mercury.[6] It is a B-type main-sequence star,[6] while the secondary component, 53 Aurigae B, is an early F-type main-sequence star.[6] The total mass of the system is estimated to be 4.8 M☉.[6]
References
- 1 2 3 4 5 van Leeuwen, F.; et al. (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.
- 1 2 Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
- 1 2 3 4 5 6 7 8 Zverko, J.; Žižňovský, J.; Mikulášek, Z.; Iliev, I. Kh. (2008). "53 Aurigae revisited: a B9Mn + F0m composite spectrum". Contributions of the Astronomical Observatory Skalnaté Pleso. 38 (2): 467–468. Bibcode:2008CoSka..38..467Z.
- 1 2 Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV data. Bibcode:1986EgUBV........0M.
- 1 2 "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Retrieved 28 May 2017.
- 1 2 3 4 5 Wraight, K. T.; Fossati, L.; Netopil, M.; Paunzen, E.; Rode-Paunzen, M.; Bewsher, D.; Norton, A. J.; White, Glenn J. (2012). "A photometric study of chemically peculiar stars with the STEREO satellites - I. Magnetic chemically peculiar stars★". Monthly Notices of the Royal Astronomical Society. 420: 757. arXiv:1110.6283. Bibcode:2012MNRAS.420..757W. doi:10.1111/j.1365-2966.2011.20090.x.
This article is issued from
Wikipedia.
The text is licensed under Creative Commons - Attribution - Sharealike.
Additional terms may apply for the media files.