Astronomy:35 Leukothea
.png) Three-dimensional model of 35 Leukothea created based on light-curve | |
| Discovery | |
|---|---|
| Discovered by | R. Luther |
| Discovery date | April 19, 1855 |
| Designations | |
Designation | (35) Leukothea |
| Pronunciation | /ljuːˈkɒθiə/[1] |
| Named after | Λευκοθέα Leykothea |
| 1948 DC; 1950 RS1; 1976 WH | |
| Minor planet category | Main belt |
| Adjectives | Leukothean /ljuːˈkɒθiən/ |
| Orbital characteristics[2] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| |{{{apsis}}}|helion}} | 549.374 Gm (3.672 AU) |
| |{{{apsis}}}|helion}} | 345.074 Gm (2.307 AU) |
| 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° |
| 213.962° | |
| Physical characteristics | |
| Mean diameter | 103.05 ± 1.2 km[3] |
| Mass | (1.014 ± 0.491/0.321)×1018 kg[3] |
| Mean density | 1.769 ± 0.857/0.56 g/cm3[3] |
| ~0.0513 km/s | |
| Rotation period | 31.900[4] h |
| Albedo | 0.066[5] |
| Physics | ~162 K |
Spectral type | C |
| Absolute magnitude (H) | 8.5 |
35 Leukothea is a large, dark asteroid from the asteroid belt. It was discovered by German astronomer Karl Theodor Robert Luther on April 19, 1855,[6] and named after Leukothea, a sea goddess in Greek mythology. Its historical symbol was a pharos (ancient lighthouse); it was encoded in Unicode 17.0 as U+1CED0 (12px).[7][8]
Leukothea is a C-type asteroid in the Tholen classification system,[2] suggesting a carbonaceous composition. It is orbiting the Sun with a period of 5.17 years and has a cross-sectional size of 103.1 km.
Photometric observations of this asteroid from the Organ Mesa Observatory in Las Cruces, New Mexico during 2010 gave a light curve with a rotation 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.[4]
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.[9]
References
- ↑ "Leukothea". Dictionary.com Unabridged. Random House. https://www.dictionary.com/browse/Leukothea.
- ↑ 2.0 2.1 Yeomans, Donald K., "35 Leukothea", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=35, retrieved 2013-04-07.
- ↑ 3.0 3.1 3.2 Fienga, A.; Avdellidou, C.; Hanuš, J. (February 2020). "Asteroid masses obtained with INPOP planetary ephemerides". Monthly Notices of the Royal Astronomical Society 492 (1). doi:10.1093/mnras/stz3407. https://academic.oup.com/mnras/article/492/1/589/5658701.
- ↑ 4.0 4.1 Pilcher, Frederick (July 2010), "Period Determinations for 11 Parthenope, 35 Leukothea, 38 Leda, 111 Ate, 194 Prokne, 262 Valda, 728 Leonisis, and 747 Winchester", The Minor Planet Bulletin 37 (3): pp. 119–122, Bibcode: 2010MPBu...37..119P.
- ↑ Asteroid Data Archive, Planetary Science Institute, http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab, retrieved 2008-11-03.
- ↑ "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html, retrieved 2013-04-07.
- ↑ Bala, Gavin Jared; Miller, Kirk (18 September 2023). "Unicode request for historical asteroid symbols". Unicode. https://www.unicode.org/L2/L2023/23207-historical-asteroids.pdf.
- ↑ "Miscellaneous Symbols Supplement". The Unicode Consortium. 2025. https://www.unicode.org/charts/PDF/U1CEC0.pdf.
- ↑ Šidlichovský, M. (1999), Svoren, J.; Pittich, E. M.; Rickman, H., eds., "Resonances and chaos in the asteroid belt", 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: pp. 297–308, Bibcode: 1999esra.conf..297S.
External links
- 35 Leukothea at AstDyS-2, Asteroids—Dynamic Site
- 35 Leukothea at the JPL Small-Body Database
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