| Discovery[1] | |
|---|---|
| Discovered by | F. Sy |
| Discovery site | Algiers Observatory |
| Discovery date | 26 May 1916 |
| Designations | |
| (858) El Djezaïr | |
| Pronunciation | /ɛlˌdʒɛzɑːˈɪər/el-JEZ-ah-EER |
Named after | Algiers(Arabic name)[2] |
| 1916 a · A908 UC A911 HE | |
| main-belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 106.80 yr (39010 days) |
| Aphelion | 3.0983 AU (463.50 Gm) |
| Perihelion | 2.5252 AU (377.76 Gm) |
| 2.8118 AU (420.64 Gm) | |
| Eccentricity | 0.10192 |
| 4.71yr (1722.1d) | |
| 102.29° | |
| 0° 12m 32.544s / day | |
| Inclination | 8.8726° |
| 67.197° | |
| 179.05° | |
| Earth MOID | 1.51148 AU (226.114 Gm) |
| Jupiter MOID | 1.9171 AU (286.79 Gm) |
| TJupiter | 3.296 |
| Physical characteristics | |
| 11.755±1.3km | |
| 22.31 h (0.930 d) | |
| 0.3197±0.085 | |
| Tholen =S | |
| 10.2 | |
858 El Djezaïr (/ɛlˌdʒɛzɑːˈɪər/el-JEZ-ah-EER) is a stonyasteroid from theasteroid belt, about 24 kilometers in diameter. It was discovered on 26 May 1916, by French astronomerFrédéric Sy at theAlgiers Observatory in Algeria, North Africa, and given the provisional designation 1916 a.[1]
The asteroid orbits the Sun at a distance of 2.5–3.1AU once every 4.71 years (1,722 days). The brightS-type asteroid has a very high geometric albedo of 0.32. Its rotation period has been measured to take 22 hours and 20 minutes.[3] Along with the asteroids68 Leto and236 Honoria, it is a member of theLeto family, a small, well-defined group of asteroids, all with a semi-major axis of close to 2.8 AU.
El Djezaïr is the French spelling of theArabic name forAlgiers and Algeria (الجزائر), literally meaning 'the Islands'. The asteroid was the first minor planet to receive a name that consists of more than one word.[2] Its designation, 1916 a, is a superseded version of the modern two-letter codesystem of provisional designation, implemented just a few years later in 1925.
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
