HD 11964 is a binary star system located 110[1] light-years away from the Sun in the equatorial constellation of Cetus.
It is radiating 2.9[6] times the luminosity of the Sun from its photosphere at an effective temperature of 5,321 K.[5] A wide binary companion star was discovered in 2000.
[11] This secondary, designated component B, has a visual magnitude of 11.11 and lies at an angular separation of 29.7″ along a position angle of 134°, as of 2015.
Gregory claimed that there was a third planet in the system on the basis of Bayesian analysis of the radial velocity data.
Gregory cautioned that the close match between the period of this planet to being exactly a year meant that the radial velocity variations may have been caused by insufficient correction for the motion of the Earth in orbit around the Sun.