43 Ariadne

Ariadne (minor planet designation: 43 Adriane) 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.

43 Ariadne
A three-dimensional model of 43 Ariadne based on its light curve
Discovery
Discovered byN. R. Pogson
Discovery date15 April 1857
Designations
(43) Ariadne
Pronunciation/æriˈædniː/[1]
Named after
Ariadne
Main belt (Flora family)
AdjectivesAriadnean, Ariadnian /æriˈædniən/
Orbital characteristics
Epoch 26 November 2005 (JD 2453700.5)
Aphelion384.954 Gm (2.573 AU)
Perihelion274.339 Gm (1.834 AU)
329.646 Gm (2.204 AU)
Eccentricity0.168
1194.766 d (3.27 a)
101.582°
Inclination3.464°
264.937°
15.948°
Physical characteristics
Dimensions95 km × 60 km × 50 km[2][3][4]
Mass(1.21±0.22)×1018 kg[5]
Mean density
  • ~2.7 g/cm3 (estimate)[6]
  • 8.99±2.57 g/cm3 [5]
0.2401 d[7]
0.274[8]
S
8.8[9] to 13.42
7.93
0.11–0.025″

    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) = (−15°, 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.[10] Asteroids studied include (63) Ausonia, (15) Eunomia, (43) Ariadne, (44) Nysa, and (624) Hektor.[10]

    Trivia
    • 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 equivalent to the maximum apparent size of Pluto.

    References
    1. Noah Webster (1884) A Practical Dictionary of the English Language
    2. "IRAS Minor Planet Survey (IMPS)". Archived from the original on 11 December 2005. Retrieved 11 December 2005.
    3. Kaasalainen, M.; Torppa, J.; Piironen, J. (2002). "Models of Twenty Asteroids from Photometric Data" (PDF). Icarus. 159 (2): 369–395. Bibcode:2002Icar..159..369K. doi:10.1006/icar.2002.6907.
    4. Tanga, P.; et al. (2003). "Asteroid observations with the Hubble Space Telescope" (PDF). Astronomy & Astrophysics. 401 (2): 733–741. Bibcode:2003A&A...401..733T. doi:10.1051/0004-6361:20030032.
    5. Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
    6. Krasinsky, G. A.; et al. (2002). "Hidden Mass in the Asteroid Belt". Icarus. 158 (1): 98–105. Bibcode:2002Icar..158...98K. doi:10.1006/icar.2002.6837.
    7. PDS lightcurve data Archived 14 June 2006 at Archive.today
    8. Supplemental IRAS Minor Planet Survey Archived 23 June 2006 at Archive.today
    9. "AstDys (43) Ariadne Ephemerides". Department of Mathematics, University of Pisa, Italy. Archived from the original on 28 June 2012. Retrieved 26 June 2010.
    10. Tanga, P.; Hestroffer, D.; Cellino, A.; Lattanzi, M.; Martino, M. Di; Zappalà, V. (1 April 2003). "Asteroid observations with the Hubble Space Telescope FGS". Astronomy & Astrophysics. 401 (2): 733–741. Bibcode:2003A&A...401..733T. doi:10.1051/0004-6361:20030032. ISSN 0004-6361.
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