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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 ]

[ hide orbit diagram ]

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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .197092660857249 4.6899e-08  
a 2.241856180574446 9.4482e-09 au
q 1.800002780685759 1.0633e-07 au
i 5.14535702028674 5.2467e-06 deg
node 171.3981850254587 5.2024e-05 deg
peri 133.4440711286974 5.42e-05 deg
M 164.6993859520893 1.3433e-05 deg
tp 2458439.581804040723
(2018-Nov-17.08180404)		 4.4307e-05 TDB
period 1226.055272629133
3.36		 7.7508e-06
2.122e-08		 d
yr
n .2936246089689105 1.8562e-09 deg/d
Q 2.683709580463133 1.131e-08 au
   Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      8886 days (24.33 yr)  
   first obs. used      1995-08-22  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55807  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:14:00  

Additional Information
 Earth MOID = .78986 au 
 Jupiter MOID = 2.57281 au 
 T_jup = 3.603 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456905.5 (2014-Sep-05.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1974129756806991 4.6848e-08  
q 1.798710496779029 1.0619e-07 au
tp 2457214.349483326834
(2015-Jul-10.84948333)		 4.1958e-05 TDB
node 171.4306330798575 5.1997e-05 deg
peri 133.5497626146107 5.417e-05 deg
i 5.14677756451368 5.249e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      274  
   data-arc span      8886 days (24.33 yr)  
   first obs. used      1995-08-22  
   last obs. used      2019-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55807  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 22:14:00  

Additional Information
 Jupiter MOID = 2.57281 au 
 T_jup = 3.603 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.194764881079419E-15 -4.962293380810856E-15 1.642577303007402E-13 -3.500677080328554E-14 7.255327028724982E-14 -3.914877530832757E-15
q -4.962293380810856E-15 1.127590040507381E-14 -3.046610622774823E-13 7.99530899954301E-14 -1.490408805232491E-13 8.99975361934654E-15
tp 1.642577303007402E-13 -3.046610622774823E-13 1.76046927027294E-9 -2.583577815136664E-11 6.526509090395605E-10 3.148619337713134E-13
node -3.500677080328554E-14 7.99530899954301E-14 -2.583577815136664E-11 2.703697282085416E-9 -2.700491860077852E-9 -4.601441588595084E-11
peri 7.255327028724982E-14 -1.490408805232491E-13 6.526509090395605E-10 -2.700491860077852E-9 2.934442895626712E-9 4.604277004109596E-11
i -3.914877530832757E-15 8.99975361934654E-15 3.148619337713134E-13 -4.601441588595084E-11 4.604277004109596E-11 2.755196052088624E-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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