HD 64440
Star in the constellation Puppis / From Wikipedia, the free encyclopedia
This article is about a Puppis. For A Puppis, see HD 54893.
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]
Quick Facts Observation data Epoch J2000 Equinox J2000, Constellation ...
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] |
Distance | 350 ± 30 ly (108 ± 10 pc) |
Absolute magnitude (MV) | -1.44[2] |
Details | |
Luminosity | 461[2] L☉ |
Surface gravity (log g) | 1.66[6] cgs |
Temperature | 4,601[6] K |
Metallicity [Fe/H] | +0.02[6] dex |
Rotational velocity (v sin i) | 2.3[7] km/s |
Other designations | |
Database references | |
SIMBAD | data |
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