Astronomy:13 Vulpeculae
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Short description: Star in the constellation Vulpecula
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| Observation data {{#ifeq:J2000|J2000.0 (ICRS)|Epoch J2000.0 Equinox J2000.0 (ICRS)| Epoch J2000 [[Astronomy:Equinox (celestial coordinates)|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] |
| Apparent magnitude (V) | |
| 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[1] mas |
| 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[3] mas |
| 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
- ↑ 1.0 1.1 1.2 1.3 1.4 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ 2.0 2.1 2.2 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. doi:10.1051/0004-6361/202037964. Bibcode: 2020A&A...639A..32H.
- ↑ 3.0 3.1 3.2 3.3 3.4 Brown, A. G. A. (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics 649: A1. doi:10.1051/0004-6361/202039657. Bibcode: 2021A&A...649A...1G. Gaia EDR3 record for this source at VizieR.
- ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A. Vizier catalog entry
- ↑ 5.0 5.1 Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G.
- ↑ Hartkopf, W. I. et al. (June 30, 2006), Sixth Catalog of Orbits of Visual Binary Stars, United States Naval Observatory, http://www.usno.navy.mil/USNO/astrometry/optical-IR-prod/wds/orb6, retrieved 2017-06-02.
- ↑ Pasinetti Fracassini, L. E. et al. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics 367 (2): 521–524. doi:10.1051/0004-6361:20000451. Bibcode: 2001A&A...367..521P.
- ↑ 8.0 8.1 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. doi:10.1111/j.1365-2966.2012.21873.x. Bibcode: 2012MNRAS.427..343M. 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. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=13+Vul.
- ↑ 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. doi:10.1051/0004-6361/201219774. Bibcode: 2012A&A...546A..69M. Vizier catalog entry
External links
- 13 Vulpeculae on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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