13 Vulpeculae
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Star in the constellation Vulpecula
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Vulpecula |
| 13 Vulpeculae A | |
| Right ascension | 19h 53m 27.6957s[1] |
| Declination | 24° 04′ 46.608″[1] |
| Apparent magnitude (V) | 4.584±0.008[2] |
| 13 Vulpeculae B | |
| Right ascension | 19h 53m 27.6102s[3] |
| Declination | 24° 04′ 46.077″[3] |
| Characteristics | |
| Spectral type | B9.5III[4] |
| Apparent magnitude (U) | 4.404±0.012[2] |
| Apparent magnitude (B) | 4.536±0.010[2] |
| Astrometry | |
| 13 Vulpeculae A | |
| Radial velocity (Rv) | −28.10[5] km/s |
| Proper motion (μ) | RA: 22.325±0.065[1] mas/yr Dec.: 36.510±0.072[1] mas/yr |
| Parallax (π) | 9.6342 ± 0.0902 mas [1] |
| Distance | 339 ± 3 ly (103.8 ± 1.0 pc) |
| Absolute magnitude (MV) | −0.48[4] |
| 13 Vulpeculae B | |
| Proper motion (μ) | RA: 14.037±0.135[3] mas/yr Dec.: 32.954±0.131[3] mas/yr |
| Parallax (π) | 9.8828 ± 0.1524 mas [3] |
| Distance | 330 ± 5 ly (101 ± 2 pc) |
| Orbit [6] | |
| Period (P) | 615.25±104.12 yr |
| Semi-major axis (a) | 1.555±0.241′′ |
| Eccentricity (e) | 0.079±0.042 |
| Inclination (i) | 85.9±1.5° |
| Longitude of the node (Ω) | 68.1±0.3° |
| Periastron epoch (T) | 2027.82±94.79 |
| Argument of periastron (ω) (secondary) | 169.7±4.4° |
| Details | |
| 13 Vul A | |
| Radius | 1.3[7] R☉ |
| Luminosity | 180[4] L☉ |
| Temperature | 8,801[8] K |
| Metallicity [Fe/H] | −0.11[4] dex |
| Rotational velocity (v sin i) | 45.0[9] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
13 Vulpeculae is a blue giant with a stellar classification of class B9.5III[4] in the northern constellation Vulpecula. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of 4.57[4] and it is approximately 339 light years away from the Sun based on parallax. The star is radiating 180[4] times the luminosity of the Sun from its photosphere at an effective temperature of 8,801 K.[8]
There is one reported companion, designated component B, with a magnitude of 7.37, an orbital period of roughly 615 years, and an angular separation of 1.55′′ .[11] The system is moving closer to the Earth with a heliocentric radial velocity of −28 km/s.[5]
References
[edit ]- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv:2012.01533 . Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657 . S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c Harmanec, P.; et al. (2020). "A new study of the spectroscopic binary 7 Vul with a Be star primary". Astronomy and Astrophysics. 639. Table A.1. arXiv:2005.11089 . Bibcode:2020A&A...639A..32H. doi:10.1051/0004-6361/202037964. S2CID 218862853.
- ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv:2012.01533 . Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657 . S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
- ^ a b c d e f g Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. S2CID 119257644. Vizier catalog entry
- ^ a b Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053 . Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ Hartkopf, W. I.; et al. (June 30, 2006), Sixth Catalog of Orbits of Visual Binary Stars, United States Naval Observatory, archived from the original on 2017年08月01日, retrieved 2017年06月02日.
- ^ Pasinetti Fracassini, L. E.; et al. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics. 367 (2) (Third ed.): 521–524. arXiv:astro-ph/0012289 . Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451. S2CID 425754.
- ^ a b McDonald, I.; Zijlstra, A. A.; Boyer, M. L. (2012). "Fundamental parameters and infrared excesses of Hipparcos stars". Monthly Notices of the Royal Astronomical Society. 427 (1): 343–357. arXiv:1208.2037 . Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x . S2CID 118665352. Vizier catalog entry
- ^ Glebocki, R.; Gnacinski, P. (2005). "VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)". VizieR On-line Data Catalog: III/244. Originally Published in: 2005csss...13..571G; 2005yCat.3244....0G. 3244. Bibcode:2005yCat.3244....0G. Vizier catalog entry
- ^ "13 Vul". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2019年03月15日.
- ^ Malkov, O. Yu.; Tamazian, V. S.; Docobo, J. A.; Chulkov, D. A. (2012). "Dynamical masses of a selected sample of orbital binaries". Astronomy & Astrophysics. 546: A69. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774 . Vizier catalog entry
External links
[edit ]- 13 Vulpeculae on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images