13 Vulpeculae

13 Vulpeculae
Location of 13 Vulpeculae (circled)
Observation data
Epoch J2000      Equinox ICRS
Constellation Vulpecula[1]
13 Vulpeculae A
Right ascension 19h 53m 27.6957s[2]
Declination 24° 04′ 46.608″[2]
Apparent magnitude (V) 4.64[3]
13 Vulpeculae B
Right ascension 19h 53m 27.6102s[4]
Declination 24° 04′ 46.077″[4]
Apparent magnitude (V) 7.34[3]
Characteristics
13 Vulpeculae A
Spectral type B9.5III[1]
Apparent magnitude (U) 4.404±0.012[5]
Apparent magnitude (B) 4.536±0.010[5]
Astrometry
13 Vulpeculae A
Radial velocity (Rv)−28.10[6] km/s
Proper motion (μ) RA: 22.325±0.065[2] mas/yr
Dec.: 36.510±0.072[2] mas/yr
Parallax (π)9.6342±0.0902 mas[2]
Distance339 ± 3 ly
(103.8 ± 1.0 pc)
Absolute magnitude (MV)−0.48[1]
13 Vulpeculae B
Proper motion (μ) RA: 14.037±0.135[4] mas/yr
Dec.: 32.954±0.131[4] mas/yr
Parallax (π)9.8828±0.1524 mas[4]
Distance330 ± 5 ly
(101 ± 2 pc)
Orbit[7]
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
Radius1.3[8] R☉
Luminosity180[1] L☉
Temperature8,801[9] K
Metallicity [Fe/H]−0.11[1] dex
Rotational velocity (v sin i)45.0[10] km/s
Other designations
13 Vul, BD+23°3820, GC 27544, HD 188260, HIP 97886, HR 7592, SAO 87883, CCDM J19535+2405AB, WDS J19535+2405AB, 2MASS J19532768+2404464[11]
Database references
SIMBADdata

13 Vulpeculae is a blue giant with a stellar classification of class B9.5III[1] 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[1] and it is approximately 339 light years away from the Sun based on parallax. The star is radiating 180[1] times the luminosity of the Sun from its photosphere at an effective temperature of 8,801 K.[9]

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″.[12] The system is moving closer to the Earth with a heliocentric radial velocity of −28 km/s.[6]

References

  1. 1 2 3 4 5 6 7 8 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. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  3. 1 2 Fabricius, C.; Høg, E.; Makarov, V. V.; Mason, B. D.; Wycoff, G. L.; Urban, S. E. (2002). "The Tycho double star catalogue". Astronomy and Astrophysics. 384: 180. Bibcode:2002A&A...384..180F. doi:10.1051/0004-6361:20011822.
  4. 1 2 3 4 5 Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
  5. 1 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. arXiv:2005.11089. Bibcode:2020A&A...639A..32H. doi:10.1051/0004-6361/202037964. S2CID 218862853.
  6. 1 2 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.
  7. ↑ 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 2017-08-01, retrieved 2017-06-02.
  8. ↑ 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.
  9. 1 2 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
  10. ↑ 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
  11. ↑ "13 Vul". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-03-15.
  12. ↑ 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
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