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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


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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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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
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
2034-Jan-28 20:44 < 00:01 Eunom 0.0435402767685237 0.0435387182691627 0.0435418356721277 6.20649233632978 6.20649228438326 2463991.363824121 0.560847146100661 282.7899840262 49.6567935547097 -77.6042740049924 128151.31549463 T 13 CATAB v2.0e-lin.ifort 2018-May-31 17:00:17 2018-Dec-17 23:50
2144-Apr-01 20:12 00:05 David 0.0311736985371853 0.0311570789986349 0.0311903595114073 6.23463465808989 6.23463458036078 2504231.342005353 4.62912533763765 1977.03767185364 48.1932696618044 65.22921231029 87834.4529208776 T 13 CATAB v2.0e-lin.ifort 2018-May-31 17:00:17 2018-Dec-17 23:50
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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