43 Ariadne
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A three-dimensional model of 43 Ariadne based on its light curve.
|
|
| Discovery | |
|---|---|
| Discovered by | N. R. Pogson |
| Discovery date | April 15, 1857 |
| Designations | |
|
Named after
|
Ariadne |
| none | |
| Main belt (Flora family) | |
| Orbital characteristics | |
| Epoch November 26, 2005 (JD 2453700.5) | |
| Aphelion | 384.954 Gm (2.573 AU) |
| Perihelion | 274.339 Gm (1.834 AU) |
| 329.646 Gm (2.204 AU) | |
| Eccentricity | 0.168 |
| 1194.766 d (3.27 a) | |
|
Average orbital speed
|
19.92 km/s |
| 101.582° | |
| Inclination | 3.464° |
| 264.937° | |
| 15.948° | |
| Physical characteristics | |
| Dimensions | 95×60×50 km |
| Mass | (1.21 ± 0.22) × 1018 kg |
|
Mean density
|
~2.7 g/cm³ (estimate) 8.99 ± 2.57 g/cm3 |
| ~0.012 m/s² (estimate) | |
| ~0.034 km/s (estimate) | |
| 0.2401 d | |
| Albedo | 0.274 (geometric) |
| Temperature | ~178 K (−95 °C) max: 275 K (2 °C) |
|
Spectral type
|
S-type asteroid |
| 8.8 to 13.42 | |
| 7.93 | |
| 0.11″ to 0.025″ | |
43 Ariadne /ˌæriˈædniː/ is a fairly large and bright main-belt asteroid. It is the second-largest member of the Flora asteroid family. It was discovered by N. R. Pogson on April 15, 1857, and named after the Greek heroine Ariadne.
Ariadne is very elongate (almost twice as long as its smallest dimension) and probably bi-lobed or at least very angular. It is a retrograde rotator, although its pole points almost parallel to the ecliptic towards ecliptic coordinates (β, λ) = (-15°, 253°) with a 10° uncertainty. This gives an axial tilt of about 105°.
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