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210425 Imogene (2008 AM31)
Classification: Main-belt Asteroid          SPK-ID: 2210425
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09278405151193041 9.9643e-08  
a 3.073117730963738 6.6585e-08 au
q 2.787981417111772 3.0728e-07 au
i 8.512564619172233 9.637e-06 deg
node 138.0905259809297 6.386e-05 deg
peri 310.0114145146134 8.6309e-05 deg
M 232.2618514355976 5.7461e-05 deg
tp 2458298.708836408064
0.00032265 JED
period 1967.737781796455
n .1829512058620618 5.946e-09 deg/d
Q 3.358254044815705 7.2763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      4581 days (12.54 yr)  
   first obs. used      2002-12-07  
   last obs. used      2015-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .6598  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 15:53:40  

Additional Information
 Earth MOID = 1.81222 au 
 Jupiter MOID = 1.8179 au 
 T_jup = 3.207 
[ 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 15.8 mag n/a MPO260352  

210425 Imogene           Discovered 2008 Jan. 10 by the Prairie School at Calvin-Rehoboth Observatory.
Located in Racine, Wisconsin, the Prairie School, where the discoverers C. Leipold, T. Pastika and K. Simpson are students, was cofounded in 1965 by Imogene Powers Johnson (b. 1930), an avid naturalist and amateur astronomer dedicated to introducing young minds to the wonders of the universe.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08

[ show close-approach data ]
Alternate Designations
 2008 AM31 = 2003 ER19 = 2005 NT26 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-01 13:39 UT
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