35 Vulpeculae

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35 Vulpeculae
Observation data
Epoch J2000      Equinox J2000
Constellation Vulpecula
Right ascension 21h 27m 40.05720s[1]
Declination +27° 36′ 30.9396″[1]
Apparent magnitude (V) 5.39[2]
Spectral type A1VmA3[3]
B−V color index 0.049±0.003[2]
Radial velocity (Rv) −8.0±2.8[4] km/s
Proper motion (μ) RA: +41.37[1] mas/yr
Dec.: +20.94[1] mas/yr
Parallax (π) 17.14 ± 0.28[1] mas
Distance 190 ± 3 ly
(58.3 ± 1.0 pc)
Absolute magnitude (MV) 1.56[2]
Mass 2.15[5] M
Radius 1.70[6] R
Luminosity 21.6[2] L
Surface gravity (log g) 4.35±0.14[5] cgs
Temperature 9,622±327[5] K
Metallicity [Fe/H] +0.4[7] dex
Rotational velocity (v sin i) 81[7] km/s
Age 212[5] Myr
Other designations
35 Vul, BD+26° 4164, FK5 1549, HD 204414, HIP 105966, HR 8217, SAO 89720[8]
Database references

35 Vulpeculae is a single,[9] white-hued star in the northern constellation of Vulpecula. It is faintly visible to the naked eye with an apparent visual magnitude of 5.39.[2] An annual parallax shift of 17.14±0.28 mas[1] provides a distance estimate of about 190 light years. It is moving closer with a heliocentric radial velocity of −8 km/s.[4]

This is an A-type main-sequence star with a stellar classification of A1VmA3,[3] indicating it has the spectrum of an A1 class star with the metal-lines of an A3 star. It is an estimated 212[5] million years old with a projected rotational velocity of 81 km/s.[7] The star has 2.15[5] times the mass of the Sun with 1.70[6] times the Sun's radius. It is radiating 21.6[2] times the Sun's luminosity from its photosphere at an effective temperature of around 9,622 K.[5]


  1. ^ a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357. 
  2. ^ a b c d e f 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. 
  3. ^ a b Osawa, Kiyoteru (1959), "Spectral Classification of 533 B8-A2 Stars and the Mean Absolute Magnitude of A0 V Stars", Astrophysical Journal, 130: 159, Bibcode:1959ApJ...130..159O, doi:10.1086/146706. 
  4. ^ 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:1606.08053Freely accessible, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065. 
  5. ^ a b c d e f g David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154Freely accessible, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146. 
  6. ^ a b Patel, Rahul I.; et al. (May 2014), "A Sensitive Identification of Warm Debris Disks in the Solar Neighborhood through Precise Calibration of Saturated WISE Photometry", The Astrophysical Journal Supplement Series, 212 (1): 23, arXiv:1403.3435Freely accessible, Bibcode:2014ApJS..212...10P, doi:10.1088/0067-0049/212/1/10, 10. 
  7. ^ a b c Gebran, M.; et al. (2016), "A new method for the inversion of atmospheric parameters of A/Am stars", Astronomy & Astrophysics, 589: A83, arXiv:1603.01146Freely accessible, Bibcode:2016A&A...589A..83G, doi:10.1051/0004-6361/201528052. 
  8. ^ "35 Vul". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-04-21. 
  9. ^ De Rosa, R. J.; et al. (2014), "The VAST Survey - III. The multiplicity of A-type stars within 75 pc", Monthly Notices of the Royal Astronomical Society, 437 (2): 1216, arXiv:1311.7141Freely accessible, Bibcode:2014MNRAS.437.1216D, doi:10.1093/mnras/stt1932. 

External links[edit]

Coordinates: Sky map 21h 27m 40.1s, +27° 36′ 31″