43 Ariadne
Main-belt asteroid
From Wikipedia, the free encyclopedia
43 Ariadne 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 15 April 1857 and named after the Greek heroine Ariadne.
A three-dimensional model of 43 Ariadne based on its light curve on the top and an image of the asteroid on the bottom | |
| Discovery | |
|---|---|
| Discovered by | N. R. Pogson |
| Discovery date | 15 April 1857 |
| Designations | |
| (43) Ariadne | |
| Pronunciation | /æriËædniË/[1] |
Named after | Ariadne |
| Main belt (Flora family) | |
| Adjectives | Ariadnean, Ariadnian /æriËædniÉn/ |
| Orbital characteristics | |
| Epoch 26 November 2005 (JD 2453700.5) | |
| Aphelion | 384.954 million km (2.573 AU) |
| Perihelion | 274.339 million km (1.834 AU) |
| 329.646 million km (2.204 AU) | |
| Eccentricity | 0.168 |
| 1194.766 d (3.27 a) | |
| 101.582° | |
| Inclination | 3.464° |
| 264.937° | |
| 15.948° | |
| Physical characteristics | |
| Dimensions | 95 km à 60 km à 50 km[2][3][4] |
| Mass | (3.27 ± 1.35/0.59)Ã1017 kg[5] |
Mean density | 3.042 ± 1.255/0.547 g/cm3[5][a] |
| 0.2401 d[6] | |
| 0.274[7] | |
| S | |
| 8.8[8] to 13.42 | |
| 7.93 | |
| 0.11â0.025â³ | |
Characteristics
Ariadne is very elongate (almost twice as long as its smallest dimension) and probably bi-lobed[4] or at least very angular. It is a retrograde rotator, although its pole points almost parallel to the ecliptic towards ecliptic coordinates (β, λ) = (â15°, 253°) with a 10° uncertainty.[3] This gives an axial tilt of about 105°.
Studies
43 Ariadne was in a study of asteroids using the Hubble FGS. Asteroids studied include (63) Ausonia, (15) Eunomia, (43) Ariadne, (44) Nysa, and (624) Hektor.[9]
Notes
- Assuming a diameter of 59 ± 4 km.
