35 Leukothea

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35 Leukothea 35 Leukothea symbol.png
Discovered by R. Luther
Discovery date April 19, 1855
Named after Leucothea
Alternative names 1948 DC; 1950 RS1; 1976 WH
Minor planet category Main belt
Orbital characteristics[1]
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 549.374 Gm (3.672 AU)
Perihelion 345.074 Gm (2.307 AU)
Semi-major axis 447.224 Gm (2.990 AU)
Eccentricity 0.228
Orbital period 1,887.983 d (5.17 a)
Average orbital speed 17.00 km/s
Mean anomaly 77.469°
Inclination 7.938°
Longitude of ascending node 353.817°
Argument of perihelion 213.962°
Physical characteristics
Dimensions 103.1 km
Escape velocity ~0.0545 km/s
Rotation period 31.900[2] h
Albedo 0.066[3]
Temperature ~162 K
Spectral type C
Absolute magnitude (H) 8.5

35 Leukothea (/ljˈkɒθiə/ lew-KOTH-ee-ə, Greek: Λευκοθέα) is a large, dark asteroid from the asteroid belt It was discovered by German astronomer Karl Theodor Robert Luther on April 19, 1855,[4] and named after Leukothea, a sea goddess in Greek mythology. 35 Leukothea is a C-type asteroid in the Tholen classification system.[1]

Photometric observations of this asteroid from the Organ Mesa Observatory in Las Cruces, New Mexico during 2010 gave a light curve with a period of 31.900 ± 0.001 hours and a brightness variability of 0.42 ± 0.04 in magnitude. This is consistent with previous studies in 1990 and 2008.[2]

The computed Lyapunov time for this asteroid is 20,000 years, indicating that it occupies a chaotic orbit that will change randomly over time because of gravitational perturbations of the planets.[5]


  1. ^ a b Yeomans, Donald K., "35 Leukothea", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-04-07. 
  2. ^ a b Pilcher, Frederick (July 2010), "Period Determinations for 11 Parthenope, 35 Leukothea, 38 Leda, 111 Ate, 194 Prokne, 262 Valda, 728 Leonisis, and 747 Winchester", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 37 (3): 119–122, Bibcode:2010MPBu...37..119P. 
  3. ^ Asteroid Data Archive, Planetary Science Institute, archived from the original on 2006-06-23, retrieved 2008-11-03. 
  4. ^ "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), retrieved 2013-04-07. 
  5. ^ Šidlichovský, M. (1999), "Resonances and chaos in the asteroid belt", in Svoren, J.; Pittich, E. M.; Rickman, H., Evolution and source regions of asteroids and comets : proceedings of the 173rd colloquium of the International Astronomical Union, held in Tatranska Lomnica, Slovak Republic, August 24–28, 1998: 297–308, Bibcode:1999esra.conf..297S.