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52266 Van Flandern (1986 AD)
Classification: Main-belt Asteroid          SPK-ID: 2052266
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .220042021334151 1.0677e-07  
a 2.335053442309414 2.1535e-08 au
q 1.821243562940383 2.4865e-07 au
i 23.70813228795493 1.0863e-05 deg
node 302.1849607161519 1.7576e-05 deg
peri 229.7353843953391 2.5937e-05 deg
M 165.544517665105 2.3094e-05 deg
tp 2457001.183870689085
8.1639e-05 JED
period 1303.297805297287
n .2762223634051794 3.8212e-09 deg/d
Q 2.848863321678445 2.6274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      568  
   data-arc span      14619 days (40.02 yr)  
   first obs. used      1975-02-08  
   last obs. used      2015-02-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49659  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 23:21:52  

Additional Information
 Earth MOID = .892974 au 
 Jupiter MOID = 2.36267 au 
 T_jup = 3.425 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.9 mag n/a MPO244612  
rotation period rot_per 9.890 h n/a LCDB (Rev. 2016-February); Warner et al., 2009 Published Reference List:
[Ditteon, R.; West, J. (2011) Minor Planet Bul. 38, 214-217.]
[Brinsfield, J.W. (2011) Minor Planet Bul. 38, 154-155.]
[Behrend, R. (2011) Observatoire de Geneve web site,]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2016) Astron. J. 150, A75.]

52266 Van Flandern           Discovered 1986 Jan. 10 by C. S. Shoemaker and E. M. Shoemaker at Palomar.
Tom Van Flandern (1940-2009) predicted and comprehensively analyzed lunar occultations at the U.S. Naval Observatory in the 1970s. In 1979 he published pioneering papers on the dynamics of binary minor planets. He helped improve GPS accuracies and established Meta Research to support alternative cosmological ideas.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090209/MPCPages.arcLast Updated: 2009-02-11

Alternate Designations
 1986 AD = 1975 CJ = 1998 QX81 = 2002 QQ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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