HD 64440

This article is about a Puppis. For A Puppis, see HD 54893.
HD 64440
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]
Characteristics
Spectral type K1II+A0.5[3]
U−B color index +0.75[4]
B−V color index +1.05[4]
Astrometry
Radial velocity (Rv)+24.00[5] 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]
Distance350 ± 30 ly
(108 ± 10 pc)
Absolute magnitude (MV)-1.44[2]
Details[6]
Mass3.86±0.30 M☉
Radius30.75±1.64 R☉
Luminosity405±35 L☉
Surface gravity (log g)2.078±0.178 cgs
Temperature4,670±72 K
Metallicity [Fe/H]−0.048±0.052 dex
Rotational velocity (v sin i)2.3[7] km/s
Other designations
a Puppis, CD−40°3579, FK5 301, GC 10655, HD 64440, HIP 38414, HR 3080, WDS J07522-4035AB
Database references
SIMBADdata

HD 64440, also known as a Puppis, is a spectroscopic binary[3] 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. They orbit with a period just under 7 years and eccentricity 0.38.[3]

  1. ^ a b c d e f Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference XHIP was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference Eggleton2008 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Mallama2014 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Wilson1953 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference ottoni was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference deMedeiros2014 was invoked but never defined (see the help page).