|Discovered by||N. R. Pogson|
|Discovery date||April 15, 1857|
|Minor planet category||Main belt (Flora family)|
|Epoch November 26, 2005 (JD 2453700.5)|
|Aphelion||384.954 Gm (2.573 AU)|
|Perihelion||274.339 Gm (1.834 AU)|
|Semi-major axis||329.646 Gm (2.204 AU)|
|Orbital period||1194.766 d (3.27 a)|
|Average orbital speed||19.92 km/s|
|Longitude of ascending node||264.937°|
|Argument of perihelion||15.948°|
|Mass||~4.0×1017 kg (estimate)|
|Mean density||~2.7 g/cm³ (estimate)|
|Equatorial surface gravity||~0.012 m/s² (estimate)|
|Escape velocity||~0.034 km/s (estimate)|
|Rotation period||0.2401 d|
43 Ariadne is a fairly big and bright main belt asteroid. It is the second-biggest member of the Flora asteroid family. It was found by N. R. Pogson on April 15, 1857 and named after the Greek heroine Ariadne.
Ariadne is very stretched (almost twice as long as its smallest dimension). It is a retrograde rotator, although its pole points almost parallel to the ecliptic towards ecliptic coordinates (β, λ) = (-15°, 235°) with a 10° uncertainty. This gives an axial tilt of about 105°.
- For reasons unknown, "Asteroid 43 Ariadne" was included in a list of names of supporters of the NASA spacecraft Stardust that was stored on a microchip within the spacecraft.
- The maximum apparent size of Ariadne is equal to the maximum apparent size of Pluto.
M. Kaasalainen, J. Torppa & J. Piironen Models of Twenty Asteroids from Photometric Data, Icarus, Vol. 159, p. 369 (2002).
P. Tanga et al. Asteroid observations with the Hubble Space Telescope, Astronomy & Astrophysics, Vol. 401, p. 733 (2003).
- PDS lightcurve data
G. A. Krasinsky et al. Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002).
Other websites [change]
- shape model deduced from lightcurve
- bi-lobed shape model from Hubble lightcurves
- Orbital simulation from JPL (Java) / Ephemeris