756 Lilliana
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| Discovery[1] | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | April 26, 1908 |
| Designations | |
| MPC designation | 756 |
| Alternative names | 1908 DC[2] |
| Minor planet category | main belt |
| Orbital characteristics[3] | |
| Epoch November 30, 2008 | |
| Aphelion | 3.667 AU |
| Perihelion | 2.7213 AU |
| Semi-major axis | 3.19419 AU |
| Eccentricity | 0.148037 |
| Orbital period | 2085.16 days (5.71 years) |
| Mean anomaly | 157.352° |
| Inclination | 20.354° |
| Longitude of ascending node | 208.12° |
| Argument of perihelion | 5.988° |
| Physical characteristics | |
| Dimensions |
71.50 ± 1.4 km (44.43 ± 0.87 mi) Mean diameter[4] |
| Rotation period | 9.361 ± 0.002 hours [5] |
| Albedo | 0.0500 ± 0.002 [4] |
| Absolute magnitude (H) | 9.6 [6] |
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756 Lilliana is a minor planet orbiting the Sun that was discovered by American astronomer Joel Hastings Metcalf on April 26, 1908 from Taunton, Massachusetts. It rotates around its axis of rotation every 9.3 hours.[5]
Photometric observations of this asteroid at Palmer Divide Observatory in Colorado Springs, Colorado during 2007 gave a light curve with a period of 9.262 ± 0.001 hours and a brightness variation of 0.83 ± 0.03 in magnitude.[7] A 2012 study based upon observations at the Organ Mesa Observatory in Las Cruces, New Mexico during 2012 produced a conflicting period of 7.834 ± 0.001 hours and a brightness variation of 0.17 ± 0.02 in magnitude. Further study will be needed to resolve the discrepancies in period and amplitude.[8]
References
- ↑ "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), retrieved 2013-04-07.
- ↑ Yeomans, Donald K., "756 Lilliana", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-04-07.
- ↑ "(756) Lilliana". AstDyS. Italy: University of Pisa. Retrieved December 12, 2008.
- ↑ 4.0 4.1 Tedesco et al. (2004). "Supplemental IRAS Minor Planet Survey (SIMPS)". IRAS-A-FPA-3-RDR-IMPS-V6.0. Planetary Data System. Archived from the original on 21 January 2009. Retrieved January 7, 2009.
- ↑ 5.0 5.1 Székely et al.; Kiss, L; Szabo, G; Sarneczky, K; Csak, B; Varadi, M; Meszaros, S (2005). "CCD photometry of 23 minor planets" (abstact). Planetary and Space Science 53 (9): 925–936. arXiv:astro-ph/0504462. Bibcode:2005P&SS...53..925S. doi:10.1016/j.pss.2005.04.006. web preprint
- ↑ Tholen (2007). "Asteroid Absolute Magnitudes". EAR-A-5-DDR-ASTERMAG-V11.0. Planetary Data System. Archived from the original on 1 December 2008. Retrieved January 7, 2009.
- ↑ Warner, Brian D. (June 2008), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory - June - October 2007", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 35 (2): 56–60, Bibcode:2008MPBu...35...56W.
- ↑ Pilcher, Frederick (October 2012), "Rotation Period Determinations for 47 Aglaja, 252 Clementina, 611 Valeria, 627 Charis, and 756 Lilliana", Planetary and Space Science 39: 220-222, Bibcode:2012MPBu...39..220P.
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