HD 64440

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HD 64440
Puppis constellation map.svg
Red circle.svg
Location of HD 64440 (circled)
Observation data
Epoch J2000       Equinox J2000
Constellation Puppis
Right ascension 07h 52m 13.03173s [1]
Declination −40° 34′ 32.8318″ [1]
Apparent magnitude  (V)3.71 [2] (4.2 + 5.0) [3]
Characteristics
Spectral type K1II+A0.5 [4]
U−B color index +0.75 [5]
B−V color index +1.05 [5]
Astrometry
Radial velocity (Rv)+24.00 [6]  km/s
Proper motion (μ)RA: -18.00 [1]   mas/yr
Dec.: +5.01 [1]   mas/yr
Parallax (π)9.25 ± 0.83  mas [1]
Distance 350 ± 30  ly
(108 ± 10  pc)
Absolute magnitude  (MV)-1.44 [2]
Orbit [3]
Period (P)7.104 yr
Semi-major axis (a)0.066″
Eccentricity (e)0.351
Inclination (i)82.1°
Longitude of the node (Ω)93.6°
Periastron epoch (T)2011.62
Argument of periastron (ω)
(secondary)		148.5°
Details [7]
Mass 3.86±0.30  M☉
Radius 30.75±1.64  R☉
Luminosity 405±35  L☉
Surface gravity (log g)2.078±0.178  cgs
Temperature 4,670±72  K
Metallicity [Fe/H]−0.048±0.052  dex
Rotational velocity (v sin i)2.3 [8]  km/s
Other designations
a Puppis, CD−40°3579, FK5  301, GC  10655, HD  64440, HIP  38414, HR  3080, WDS J07522-4035AB
Database references
SIMBAD data

HD 64440, also known as a Puppis, is a spectroscopic binary [4] star in the constellation Puppis. Its apparent magnitude is 3.71. [2] Located around 108 parsecs (350 ly) distant, [1] the primary is a bright giant of spectral type K1.5II and the secondary is an early A-type star. [4] They orbit with a period of about 7 years and eccentricity 0.351. [3]

References

  1. 1 2 3 4 5 6 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv: 0708.1752 . Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID   18759600. Vizier catalog entry
  2. 1 2 3 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. S2CID   119257644. Vizier catalog entry
  3. 1 2 3 "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Retrieved 2025-02-08.
  4. 1 2 3 Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society . 389 (2): 869–879. arXiv: 0806.2878 . Bibcode:2008MNRAS.389..869E. doi: 10.1111/j.1365-2966.2008.13596.x . S2CID   14878976.
  5. 1 2 Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42 (2): 443. Bibcode:2014JAVSO..42..443M. Vizier catalog entry
  6. ↑ Wilson, R. E. (1953). "General Catalogue of Stellar Radial Velocities". Carnegie Institute Washington D.C. Publication. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN   54001336.
  7. ↑ Ottoni, G.; Udry, S.; Ségransan, D.; Buldgen, G.; Lovis, C.; Eggenberger, P.; Pezzotti, C.; Adibekyan, V.; Marmier, M.; Mayor, M.; Santos, N. C.; Sousa, S. G.; Lagarde, N.; Charbonnel, C. (2022-01-01). "CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars". Astronomy and Astrophysics. 657: A87. arXiv: 2201.01528 . Bibcode:2022A&A...657A..87O. doi:10.1051/0004-6361/202040078. ISSN   0004-6361. a Puppis' database entry at VizieR.
  8. ↑ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv: 1312.3474 . Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. S2CID   54046583. Vizier catalog entry


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