15 Vulpeculae

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15 Vulpeculae
Vulpecula constellation map.svg
Red circle.svg
Location of 15 Vulpeculae (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Vulpecula
Right ascension 20h 01m 06.04846s[1]
Declination 27° 45′ 12.8639″[1]
Apparent magnitude (V) 4.66[2] (4.62 - 4.67)[3]
Spectral type A4IIIm[3]
U−B color index +0.15[4]
B−V color index +0.18[4]
Radial velocity (Rv) -26.10[5] km/s
Proper motion (μ) RA: +58.17[1] mas/yr
Dec.: +3.84[1] mas/yr
Parallax (π) 13.80 ± 0.20[1] mas
Distance 236 ± 3 ly
(72 ± 1 pc)
Absolute magnitude (MV) 0.36[2]
Luminosity 59.76[2] L
Temperature 8,084[6] K
Metallicity [Fe/H] +0.02[2] dex
Rotational velocity (v sin i) 15.0[7] km/s
Other designations
NT Vul, BD+27° 3587, FK5 1523, GC 27753, HIP 98543, HR 7653, HD 189849, SAO 88071
Database references

15 Vulpeculae is a class A4IIIm[3] (white giant) star in the constellation Vulpecula. It is an Alpha2 Canum Venaticorum variable with magnitude ranging from 4.62 to 4.67 over a period of 14 days,[3] and it is approximately 236 light years away based on parallax.[1]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971Freely accessible. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ^ a b c d Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....1.2025S. 
  4. ^ a b Mermilliod, J. C. (2006). "VizieR Online Data Catalog: Homogeneous Means in the UBV System (Mermilliod 1991)". VizieR On-line Data Catalog: II/168. Originally published in: Institut d'Astronomie. 2168. Bibcode:2006yCat.2168....0M. Vizier catalog entry
  5. ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053Freely accessible. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  6. ^ 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: 343. arXiv:1208.2037Freely accessible. Bibcode:2012MNRAS.427..343M. doi:10.1111/j.1365-2966.2012.21873.x.  Vizier catalog entry
  7. ^ 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