2135 Aristaeus

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]

Aristaeus
Discovery
Discovered byE. F. Helin and S. J. Bus
Discovery sitePalomar
Discovery date17 April 1977
Designations
(2135) Aristaeus
Pronunciation/ærɪˈstiːəs/
Named after
Aristaeus
1977 HA
PHA[1]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 1
Observation arc37.19 yr (13585 days)
Aphelion2.40409 AU (359.647 Gm)
Perihelion0.79485 AU (118.908 Gm)
1.5995 AU (239.28 Gm)
Eccentricity0.50305
2.02 yr (738.86 d)
83.4440°
0° 29m 14.046s / day
Inclination23.06145°
191.221°
290.8743°
Earth MOID0.00972802 AU (1,455,291 km)
Physical characteristics
17.94[1]

    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]

    References
    1. "JPL Small-Body Database Browser: 2135 Aristaeus (1977 HA)" (last observation: 2014-06-27). Jet Propulsion Laboratory. Retrieved 15 April 2016.
    2. "New Names of Minor Planets" (PDF), Minor Planet Circular, Cambridge, Mass: Minor Planet Center (MPC 5014), 1 November 1979, ISSN 0736-6884
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