43 Ariadne

43 Ariadne
A three-dimensional model of 43 Ariadne based on its light curve
Discovery
Discovered by N. R. Pogson
Discovery date April 15, 1857
Designations
MPC designation (43) Ariadne
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)
101.582°
Inclination 3.464°
264.937°
15.948°
Physical characteristics
Dimensions 95×60×50 km[1][2][3]
Mass (1.21 ± 0.22) × 1018 kg[4]
Mean density
 ~2.7 g/cm³ (estimate)[5]
8.99 ± 2.57[4] g/cm3
0.2401 d[6]
0.274[7]
S
8.8[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.

    Characteristics

    Ariadne is very elongate (almost twice as long as its smallest dimension) and probably bi-lobed[3] 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.[2] This gives an axial tilt of about 105°.

    Studies

    43 Ariadne was in a study of asteroids using the Hubble FGS.[9] 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. ↑ "Archived copy". Archived from the original on 2005-12-11. Retrieved 2005-12-11.
    2. 1 2 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.
    3. 1 2 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.
    4. 1 2 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.
    5. ↑ 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.
    6. ↑ PDS lightcurve data Archived June 14, 2006, at Archive.is
    7. ↑ Supplemental IRAS Minor Planet Survey Archived June 23, 2006, at Archive.is
    8. ↑ "AstDys (43) Ariadne Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2010-06-26.
    9. ↑ Tanga, P.; Hestroffer, D.; Cellino, A.; Lattanzi, M.; Martino, M. Di; Zappalà, V. (2003-04-01). "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.
    10. ↑ Tanga, P.; Hestroffer, D.; Cellino, A.; Lattanzi, M.; Martino, M. Di; Zappalà, V. (2003-04-01). "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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