HD 20104

HD 20104 is a visual binary in the northern circumpolar constellation Camelopardalis. The system has a combined apparent magnitude of 6.41, making it near naked eye visibility. When resolved in a large telescope, HD 20104 appears to be a pair of 7th magnitude A-type main-sequence stars with a separation of about. Located approximately 550 light years away, the system is approaching the Sun with a heliocentric radial velocity of.
The system's stars have masses twice that of the Sun and effective temperatures ranging from 8,100 to 8,700 K, typical of stars their type. The primary radiates at − over luminous for its class − and spins with a projected rotational velocity of. HD 20104 has an age of 313 million years.