2135 Aristaeus

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Discovered by E. F. Helin and S. J. Bus
Discovery site Palomar
Discovery date April 17, 1977
MPC designation 2135
Named after
1977 HA
Orbital characteristics[1]
Epoch May 14, 2008
Aphelion 2.40465
Perihelion 0.79497
Eccentricity 0.50308
2.02 yr
Inclination 23.04713
Physical characteristics

2135 Aristaeus (1977 HA) is an Apollo asteroid discovered on April 17, 1977 by E. F. Helin and S. J. Bus at Palomar Observatory. 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 Earth-MOID is 0.0100 AU (1,500,000 km; 930,000 mi).[1] Its orbit is well-determined for the next several hundred years.

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).[1]


  1. ^ a b c d e f "JPL Small-Body Database Browser: 2135 Aristaeus (1977 HA)" (last observation: 2014-06-27). Jet Propulsion Laboratory. 
  2. ^ "New Names of Minor Planets" (PDF), Minor Planet Circular (Cambridge, Mass: Minor Planet Center) (MPC 5014), 1 Nov 1979, ISSN 0736-6884