HD 64440

HD 64440, also known as a Puppis, is a binary star in the constellation Puppis. At a moderate brightness of 3.71, it is visible to the naked eye. Parallax measurements give a distance of.
This is a spectroscopic binary of the single-lined type, meaning the spectral lines of only a component can be seen in the spectrum. The primary has a spectral type of K1.5II, which at first would make it a bright giant star, but this classification is unsupported by its relatively small absolute magnitude. The secondary is an early A-type star. They orbit with a period of about 6.13 years and have a high eccentricity of 0.667.