2062 Aten

2062 Aten

Orbital diagram of the Aten asteroid (epoch: Sept. 2013)
Discovery
Discovered by Eleanor F. Helin
Discovery site Palomar
Discovery date 7 January 1976
Designations
Named after
Aten
1976 AA
Aten asteroid
Orbital characteristics[1]
Epoch 31 December 2011 (JD 2455926.5)
Uncertainty parameter 0
Observation arc 59.14 yr (21601 days)
Aphelion 1.1434 AU (171.05 Gm)
Perihelion 0.79014 AU (118.203 Gm)
0.96679 AU (144.630 Gm)
Eccentricity 0.18272
0.95 yr (347.2 d)
30.04 km/s
172.27°
1.0368°/day
Inclination 18.934°
108.60°
148.04°
Earth MOID 0.113146 AU (16.9264 Gm)
Jupiter MOID 3.91861 AU (586.216 Gm)
Jupiter Tisserand parameter 6.184
Physical characteristics
Dimensions 1.1 km (0.68 mi)[1]
Mean radius
0.55 km
Mass 7.6×1011 kg
Mean density
2 ? g/cm³
Equatorial surface gravity
0.000 25 m/s²
Equatorial escape velocity
0.000 48 km/s
40.77 h (1.699 d) hr[1]
0.26[1]
Surface temp. min mean max
Kelvin[2] 242 K 263 K 291 K
Celsius -31°C -10°C 18°C
Fahrenheit -23.8°F 14°F 64.4°F
S[1]
16.80[1]

    2062 Aten (/ˈɑːtən/)[3] is an asteroid that was discovered at the Palomar Mountain Observatory by Eleanor F. Helin, who was the principal scientist for the NEAT (Near-Earth Asteroid Tracking) project until she retired in 2002. It is named after Aten, the Egyptian god of the solar disk.

    Aten was the first asteroid found to have a semi-major orbital axis of less than one astronomical unit. A new category of asteroids was thus created, the Atens. As of July 2004 about 16 Atens were numbered and some 212 were provisional,[4] the unnumbered Atens ranged from what was then 1989 VA to 2004 MD6.

    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 2062 Aten (1976 AA)" (2014-02-14 last obs (arc=58 yr)). Jet Propulsion Laboratory. Retrieved 17 April 2016.
    2. "Planetary Habitability Calculators". Planetary Habitability Laboratory. University of Puerto Rico at Arecibo. Retrieved 10 December 2015.
    3. Oxford English Dictionary
    4. "NEO Discovery Statistics". Retrieved 2014-02-26.

    External links

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