1921 Pala

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1921 Pala
Discovery[1]
Discovered by Tom Gehrels
Discovery site Palomar Observatory
Discovery date September 20, 1973
Designations
MPC designation 1921
1973 SE
Minor planet category 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]

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[edit]

  1. ^ a b "Discovery Circumstances: Numbered Minor Planets (1)-(5000)". IAU: Minor Planet Center. Retrieved December 7, 2008. 
  2. ^ "1921 Pala (1973 SE)". JPL Small-Body Database. Jet Propulsion Laboratory. Retrieved January 1, 2009. 
  3. ^ "(1921) Pala". AstDyS. University of Pisa. Retrieved December 11, 2008. 
  4. ^ 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. 
  5. ^ Roig et al.; Nesvorny, D.; Ferraz-Mello, S. (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.