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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 ]

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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1971342875131583 4.509e-08  
a 2.241739091193062 9.2992e-09 au
q 1.799815452660323 1.0271e-07 au
i 5.145924395222077 5.1999e-06 deg
node 171.3928191285598 4.7729e-05 deg
peri 133.4828320538841 4.9791e-05 deg
M 223.3789112380557 1.3278e-05 deg
tp 2459665.755232029600
(2022-Mar-27.25523203)
4.6786e-05 TDB
period 1225.959220852812
3.36
7.6283e-06
2.089e-08
d
yr
n .2936476139472027 1.8272e-09 deg/d
Q 2.683662729725801 1.1132e-08 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      9368 days (25.65 yr)  
   first obs. used      1995-08-22  
   last obs. used      2021-04-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54846  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:23:31  

Additional Information
 Earth MOID = .787702 au 
 Jupiter MOID = 2.57249 au 
 T_jup = 3.603 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457183.5 (2015-Jun-10.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1975358350835039 4.5062e-08  
q 1.798705548621365 1.0267e-07 au
tp 2457214.280920596725
(2015-Jul-10.78092060)
4.0103e-05 TDB
node 171.4280317599198 4.7711e-05 deg
peri 133.5281913518147 4.9769e-05 deg
i 5.146755295432697 5.2016e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      305  
   data-arc span      9368 days (25.65 yr)  
   first obs. used      1995-08-22  
   last obs. used      2021-04-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54846  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 11:23:31  

Additional Information
 Jupiter MOID = 2.57249 au 
 T_jup = 3.603 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.030570595904135E-15 -4.614740617684752E-15 3.216638586964494E-13 -3.37142602322036E-14 1.449819258010715E-13 -3.53593891755462E-15
q -4.614740617684752E-15 1.054089129906521E-14 -6.393662185737721E-13 7.658039645675046E-14 -3.023978872377079E-13 8.205980367880264E-15
tp 3.216638586964494E-13 -6.393662185737721E-13 1.608221415495816E-9 -2.511610440469086E-11 5.807318188501907E-10 -6.444523195637696E-14
node -3.37142602322036E-14 7.658039645675046E-14 -2.511610440469086E-11 2.276350897052187E-9 -2.274716391214733E-9 -3.192377825119959E-11
peri 1.449819258010715E-13 -3.023978872377079E-13 5.807318188501907E-10 -2.274716391214733E-9 2.476918958428965E-9 3.183467486482176E-11
i -3.53593891755462E-15 8.205980367880264E-15 -6.444523195637696E-14 -3.192377825119959E-11 3.183467486482176E-11 2.705674943708513E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.38   n/a MPCxxxxx  

268268 (2005 OJ18)          Discovered 2005-Jul-30 by NEAT at Palomar
Reference: 20110319/Numbers.arcLast Updated: 2011-03-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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