2135 Aristaeus (1977 HA) is an Apollo asteroid discovered on April 17, 1977, by E. F. Helin and S. J.
It is named for Aristaeus, the son of Apollo and the nymph Cyrene.
[2] 2135 Aristaeus is a potentially hazardous asteroid (PHA) because its minimum orbit intersection distance (MOID) is less than 0.05 AU and its diameter is greater than 150 meters.
The asteroid made its closest approach to Earth on April 1, 1977, at a nominal distance of 0.03216 AU (4,811,000 km; 2,989,000 mi).
[1] It will make its next closest approach on April 2, 2064, at a nominal distance of 0.0546 AU (8,170,000 km; 5,080,000 mi).