1921 Pala
| Discovery[1] | |
|---|---|
| Discovered by | Tom Gehrels |
| Discovery site | Palomar Observatory |
| Discovery date | September 20, 1973 |
| Designations | |
| MPC designation | 1921 |
| 1973 SE | |
| Outer main belt [2] | |
| Orbital characteristics[3] | |
| Epoch November 30, 2008 | |
| Aphelion | 4.574 AU |
| Perihelion | 1.9931 AU |
| 3.28351 AU | |
| Eccentricity | 0.393008 |
| 2173.24 days (5.95 years) | |
| 356.62° | |
| Inclination | 19.262° |
| 352.369° | |
| 19.456° | |
| Physical characteristics | |
| 14.3 [4] | |
|
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1921 Pala (1973 SE) is an outer main-belt asteroid discovered on September 20, 1973 by Tom Gehrels at Palomar Observatory.[1] It is one of very few asteroids located in the 2 : 1 mean motion resonance with Jupiter.[5]
References
- ↑ 1.0 1.1 "Discovery Circumstances: Numbered Minor Planets (1)-(5000)". IAU: Minor Planet Center. Retrieved December 7, 2008.
- ↑ "1921 Pala (1973 SE)". JPL Small-Body Database. Jet Propulsion Laboratory. Retrieved January 1, 2009.
- ↑ "(1921) Pala". AstDyS. University of Pisa. Retrieved December 11, 2008.
- ↑ 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 1, 2009.
- ↑ Roig; Nesvorny, D.; Ferraz-Mello, S. et al. (2002). "Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution". Monthly Notices of the Royal Astronomical Society 335 (2): 417–431. Bibcode:2002MNRAS.335..417R. doi:10.1046/j.1365-8711.2002.05635.x.
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