210 Isabella
Main-belt asteroid
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210 Isabella is a large and dark asteroid from the central asteroid belt, approximately 80 kilometers in diameter. It was discovered in Pola by Johann Palisa on 12 November 1879. The origin of the name is unknown. It is orbiting at a distance of 2.72 AU from the Sun with an eccentricity of 0.12 and a period of 4.49 yr. The orbital plane is inclined at an angle of 5.26° to the plane of the ecliptic.[2]
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3D convex shape model of 210 Isabella | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 12 November 1879 |
| Designations | |
| (210) Isabella | |
| Pronunciation | /ɪzəˈbɛlə/[1] |
| A879 VA, 1953 EZ1 1962 BF | |
| Main belt (Nemesis) | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 131.26 yr (47943 d) |
| Aphelion | 3.0567 AU (457.28 Gm) |
| Perihelion | 2.3892 AU (357.42 Gm) |
| 2.7230 AU (407.36 Gm) | |
| Eccentricity | 0.12257 |
| 4.493 yr (1,641.2 d) | |
Average orbital speed | 18.05 km/s |
| 153.338° | |
| 0° 13m 9.66s / day | |
| Inclination | 5.2600° |
| 32.582° | |
| 15.041° | |
| Physical characteristics | |
| Dimensions | 86.65±2.3 km[2] 73.70±8.47 km[3] |
| Mass | (3.41±1.09)×1018 kg[3] |
| 6.672 h (0.2780 d) | |
| 0.0436±0.002 | |
| CF | |
| 12.2 (peak) | |
| 9.33 | |
The asteroid is probably composed of material similar to carbonaceous chondrites. It is classified as a member of the Nemesis family of asteroids.[4] Estimates of the diameter range from 74[3] to 87 km.[2] It is spinning with a period of 6.67 h.
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