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(2008 PK9)
Classification: Apollo [NEO]          SPK-ID: 3423763
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 2454687.5 (2008-Aug-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7246237962246074 0.013838  
a 1.637142854629858 0.062804 au
q .4508301843459798 0.0062124 au
i 27.40092085463768 0.70497 deg
node 318.4873489077081 0.039415 deg
peri 108.0273893593064 0.39365 deg
M 335.664584047276 1.6957 deg
tp 2454739.220720394661
0.6308 TDB
period 765.1177764230414
n .4705157965130747 0.027075 deg/d
Q 2.823455524913737 0.10831 au
  Orbit Determination Parameters
   # obs. used (total)      17  
   first obs. used      2008-08-08  
   last obs. used      2008-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      9  
   norm. resid. RMS      .27693  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:03:06  

Additional Information
 Earth MOID = .00523279 au 
 Jupiter MOID = 3.03506 au 
 T_jup = 3.865 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 23.2   n/a MPO141933  

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2008-Aug-11 15:44 00:39 Earth 0.0287572749671855 0.0262724059109488 0.0312424244045844 25.8667340396625 25.8631518126677 2454690.155433467 39.207174758354 123998.453367671 5247.00265541386 2.36753037236571 41.1480823561216 T 7 CATAB v2.0e-lin.ifort 2017-Nov-28 10:51:26 2018-Dec-11 15:12
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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