369 Aëria
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. It was named for "Air", one of the four classical elements: earth, water, air and fire.
Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | A. Borrelly |
| Discovery site | Marseille Obs. |
| Discovery date | 4 July 1893 |
| Designations | |
MPC designation | (369) Aëria |
| Pronunciation | /eɪˈɪəriə/ |
Named after | Air (classical element) |
Alternative designations | 1893 AE · 1949 MY A894 WA |
Minor planet category | main-belt · middle Aeria |
| Orbital characteristics | |
| 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 |
Semi-major axis | 2.6510 AU |
| Eccentricity | 0.0965 |
Orbital period (sidereal) | 4.32 yr (1,577 days) |
Mean anomaly | 205.45° |
Mean motion | 0° 13m 41.88s / day |
| Inclination | 12.706° |
Longitude of ascending node | 94.209° |
| 268.82° | |
| Physical characteristics | |
Mean diameter | 60.00±1.2 km 65.39±0.72 km 70.798±2.087 km 73.767±1.072 km |
| Mass | (4.88 ± 2.78/1.15)×1017 kg |
Mean density | 3.43 ± 1.951/0.809 g/cm3 |
Synodic rotation period | 4.774±0.001 h 4.7776±0.0002 h 4.7780±0.0005 h 4.787 h 4.82 h 14 h (poor) |
| 0.127±0.018 0.1378±0.0234 0.163±0.004 0.1919±0.008 | |
| Tholen = M · M B–V = 0.711 U–B = 0.274 | |
| 8.52 8.78±0.77 8.65 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.