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6226 Paulwarren (1981 EY18)
Classification: Main-belt Asteroid          SPK-ID: 2006226
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314556199055386 4.2233e-08  
a 2.208754591003852 1.0543e-08 au
q 1.918401387024237 9.6066e-08 au
i 2.174539875128612 4.6438e-06 deg
node 279.2397160795198 0.00013824 deg
peri 151.4536308043619 0.00014047 deg
M 8.712225602744324 2.5272e-05 deg
tp 2457571.483419112990
8.407e-05 JED
period 1199.001219164164
n .300249903207738 2.1498e-09 deg/d
Q 2.499107794983468 1.1929e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1190  
   data-arc span      14314 days (39.19 yr)  
   first obs. used      1976-10-26  
   last obs. used      2016-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51319  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 18:17:41  

Additional Information
 Earth MOID = .931551 au 
 Jupiter MOID = 2.74803 au 
 T_jup = 3.647 
[ 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 14.7 mag n/a MPO347574  

6226 Paulwarren           Discovered 1981 Mar. 2 by S. J. Bus at Siding Spring in the course of the U.K. Schmidt-Caltech Asteroid Survey.
Paul Warren (b. 1953), a research geochemist at the University of California in Los Angeles, has applied a wide range of petrologic and geochemical studies toward understanding differentiated planets. His work on lunar rocks helped identify those samples least altered by impact.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020624/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1981 EY18 = 1976 UN1 = 1992 OE2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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