HD 66428 is a G-type main sequence star located approximately 179 light-years away in the constellation of Monoceros. This star is similar to our Sun with an apparent magnitude of 8.25, an effective temperature of 5705 ± 27 K and a solar luminosity 1.28. Its absolute magnitude is 11.1 while its U-V color index is 0.71. It is considered an inactive star and it is metal-rich ([Fe/H] = 0.310).  This star has a precise mass of 1.14552 solar masses. This precision comes from the Corot mission that measured asteroseismology.
In July 2006, a planet HD 66428 b was found by Paul Butler using the radial velocity method. The >2.82 MJ planet orbits at 3.18 AU away from the star.
1. ^ a b c d e f Butler, R.P. et al.'; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; Tinney, C. G.; Jones, H. R. A.; Carter, B. D. et al. (2006). "Catalog of Nearby Exoplanets". Astrophysical Journal 646 (1): 505–522. doi:10.1086/504701. http://www.iop.org/EJ/article/0004-637X/646/1/505/64046.html. Retrieved 2008-12-16.
* List of extrasolar planets
* "Notes for star HD 66428". The Extrasolar Planets Encyclopaedia. http://exoplanet.eu/star.php?st=HD+66428. Retrieved 2008-08-20.