40 Persei

From Wikipedia, the free encyclopedia
Jump to: navigation, search
40 Persei
Perseus constellation map.svg
Red circle.svg

Location of 40 Persei (circled)
Observation data
Epoch J2000      Equinox J2000
Constellation Perseus
Right ascension 03h 42m 22.64555s[1]
Declination 33° 57′ 54.0893″[1]
Apparent magnitude (V) 4.97[2]
Spectral type B0.5V[3]
U−B color index -0.84[4]
B−V color index +0.00[4]
Radial velocity (Rv) +22.00[5] km/s
Proper motion (μ) RA: +2.71[1] mas/yr
Dec.: -5.91[1] mas/yr
Parallax (π) 3.09 ± 0.21[1] mas
Distance 1,060 ± 70 ly
(320 ± 20 pc)
Absolute magnitude (MV) -2.26[2]
Mass 12.5[6] M
Luminosity 936[2] L
Surface gravity (log g) 4.36[7] cgs
Temperature 29,330[8] K
Metallicity [Fe/H] -0.43[2] dex
Rotational velocity (v sin i) 10[9] km/s
Other designations
o Persei, BD+33°698, CCDM J03424+3358A, GC 4420, HIP 17313, HR 1123, HD 22951, SAO 56646, WDS J03424+3358A
Database references

40 Persei is a class B0.5V[3] (blue main-sequence) star in the constellation Perseus. Its apparent magnitude is 4.97[2] and it is approximately 1060 light years away based on parallax.[1]

It is a binary star, with component B having magnitude 10.04, separation 19.8", and type A1Vn.[10]


  1. ^ a b c d e f Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752Freely accessible. doi:10.1051/0004-6361:20078357.  Vizier catalog entry
  2. ^ a b c d e Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. Bibcode:2012AstL...38..331A. arXiv:1108.4971Freely accessible. doi:10.1134/S1063773712050015.  Vizier catalog entry
  3. ^ a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H. 
  4. ^ a b Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42: 443. Bibcode:2014JAVSO..42..443M. 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. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. 
  6. ^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410: 190. Bibcode:2011MNRAS.410..190T. arXiv:1007.4883Freely accessible. doi:10.1111/j.1365-2966.2010.17434.x.  Vizier catalog entry
  7. ^ Soubiran, Caroline; Le Campion, Jean-François; Brouillet, Nathalie; Chemin, Laurent (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics. 591: A118. Bibcode:2016A&A...591A.118S. arXiv:1605.07384Freely accessible. doi:10.1051/0004-6361/201628497. 
  8. ^ Zorec, J.; Cidale, L.; Arias, M. L.; Frémat, Y.; Muratore, M. F.; Torres, A. F.; Martayan, C. (2009). "Fundamental parameters of B supergiants from the BCD system". Astronomy and Astrophysics. 501: 297. Bibcode:2009A&A...501..297Z. arXiv:0903.5134Freely accessible. doi:10.1051/0004-6361/200811147. 
  9. ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573: 359. Bibcode:2002ApJ...573..359A. doi:10.1086/340590. 
  10. ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog". The Astronomical Journal. 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920.  Vizier catalog entry