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31451 Joenickell (1999 CE10)
Classification: Main-belt Asteroid          SPK-ID: 2031451
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1391181812647073 5.4669e-08  
a 2.279143692562547 1.0386e-08 au
q 1.962073367212317 1.2358e-07 au
i 5.200477614381287 5.2218e-06 deg
node 102.183894184209 5.8749e-05 deg
peri 164.9974264928257 6.1727e-05 deg
M 211.5504937322317 1.7599e-05 deg
tp 2458118.741567124337
6.1401e-05 JED
period 1256.770526593991
n .2864484743890724 1.9581e-09 deg/d
Q 2.596214017912778 1.1831e-08 au
  Orbit Determination Parameters
   # obs. used (total)      903  
   data-arc span      8410 days (23.03 yr)  
   first obs. used      1993-03-19  
   last obs. used      2016-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56739  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:58:08  

Additional Information
 Earth MOID = .946394 au 
 Jupiter MOID = 2.47647 au 
 T_jup = 3.588 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3 mag n/a MPO347754  

31451 Joenickell           Discovered 1999 Feb. 9 by J. McGaha at Grasslands Observatory.
Named in honor of Joe Nickell (b. 1944), the Senior Research Fellow of the Committee for Skeptical Inquiry. A noted author, investigator, and skeptic, Nickell has written more than 30 books on mysteries, frauds, forgeries and hoaxes. He promotes scientific inquiry and reasoned investigation of extraordinary claims.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111012/MPCPages.arcLast Updated: 2011-10-13

[ show close-approach data ]
Alternate Designations
 1999 CE10 = 2000 GP134 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-03 12:29 UT
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