369 Aëria
Main-belt asteroid / From Wikipedia, the free encyclopedia
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Aëria, (minor planet designation: 369 Aëria) provisional designation 1893 AE, is a metallic asteroid and the parent body of the Aeria family. It orbits in the central region of the asteroid belt, rotates every 4.778 hours and measures approximately 65 kilometers in diameter. The asteroid was discovered on 4 July 1893, by French astronomer Alphonse Borrelly at the Marseille Observatory in southeastern France.[18] It was named for "Air", one of the four classical elements: earth, water, air and fire.[2]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | A. Borrelly |
Discovery site | Marseille Obs. |
Discovery date | 4 July 1893 |
Designations | |
(369) Aëria | |
Pronunciation | /eɪˈɪəriə/ |
Named after | Air [2] (classical element) |
1893 AE · 1949 MY A894 WA | |
main-belt · middle Aeria [3] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 123.99 yr (45,288 days) |
Aphelion | 2.9068 AU |
Perihelion | 2.3952 AU |
2.6510 AU | |
Eccentricity | 0.0965 |
4.32 yr (1,577 days) | |
205.45° | |
0° 13m 41.88s / day | |
Inclination | 12.706° |
94.209° | |
268.82° | |
Physical characteristics | |
Mean diameter | 60.00±1.2 km[4][5] 65.39±0.72 km[6] 70.798±2.087 km[7] 73.767±1.072 km[8][1] |
Mass | (4.88 ± 2.78/1.15)×1017 kg[9] |
Mean density | 3.43 ± 1.951/0.809 g/cm3[9][lower-alpha 1] |
4.774±0.001 h[10] 4.7776±0.0002 h[11] 4.7780±0.0005 h[12] 4.787 h[13] 4.82 h[14] 14 h (poor)[15] | |
0.127±0.018[8][1] 0.1378±0.0234[7] 0.163±0.004[6] 0.1919±0.008[4][5] | |
Tholen = M [1][4] · M [13][16] B–V = 0.711 [1] U–B = 0.274 [1] | |
8.52[4][5][6][7][8] 8.78±0.77[17] 8.65[1] | |
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