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268268 (2005 OJ18)
Classification: Main-belt Asteroid          SPK-ID: 2268268
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1970926479130032 5.1663e-08  
a 2.241856176244275 1.0027e-08 au
q 1.80000280622817 1.1788e-07 au
i 5.145360002240279 5.8591e-06 deg
node 171.3981684598378 5.253e-05 deg
peri 133.4440742475662 5.5675e-05 deg
M 164.6993973928912 1.461e-05 deg
tp 2458439.581766701811
(2018-Nov-17.08176670)		 4.8882e-05 TDB
period 1226.055269076923
3.36		 8.2258e-06
2.252e-08		 d
yr
n .2936246098196195 1.97e-09 deg/d
Q 2.683709546260379 1.2004e-08 au
   Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      8307 days (22.74 yr)  
   first obs. used      1995-08-22  
   last obs. used      2018-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55965  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 17:00:14  

Additional Information
 Earth MOID = .78986 au 
 Jupiter MOID = 2.57281 au 
 T_jup = 3.603 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456692.5 (2014-Feb-04.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1971229737037631 5.1643e-08  
q 1.799856994579883 1.1784e-07 au
tp 2457214.395306348227
(2015-Jul-10.89530635)		 4.7985e-05 TDB
node 171.4337472972353 5.2516e-05 deg
peri 133.4980441418117 5.5671e-05 deg
i 5.145561957778853 5.8605e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      8307 days (22.74 yr)  
   first obs. used      1995-08-22  
   last obs. used      2018-05-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55965  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-31 17:00:14  

Additional Information
 Jupiter MOID = 2.57281 au 
 T_jup = 3.603 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.667007457624537E-15 -6.07187540638018E-15 6.661428436139659E-13 -4.330820561307492E-14 2.945735831347033E-13 -6.284256211782825E-15
q -6.07187540638018E-15 1.388521863777447E-14 -1.493855184320011E-12 9.91124632826412E-14 -6.744805076698775E-13 1.443337568542313E-14
tp 6.661428436139659E-13 -1.493855184320011E-12 2.302586390249599E-9 -4.14043770921335E-11 8.985560971584655E-10 8.673234395133064E-13
node -4.330820561307492E-14 9.91124632826412E-14 -4.14043770921335E-11 2.757947343952994E-9 -2.761014504429666E-9 -5.980515165051508E-11
peri 2.945735831347033E-13 -6.744805076698775E-13 8.985560971584655E-10 -2.761014504429666E-9 3.099206245276491E-9 5.998121933486635E-11
i -6.284256211782825E-15 1.443337568542313E-14 8.673234395133064E-13 -5.980515165051508E-11 5.998121933486635E-11 3.434560479404197E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO450150  

268268 (2005 OJ18)          Discovered 2005-Jul-30 by NEAT at Palomar
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23

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