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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1971342918061742 4.69e-08  
a 2.241739090740289 9.471e-09 au
q 1.799815442672986 1.0633e-07 au
i 5.145924143919389 5.2472e-06 deg
node 171.3928210973857 5.2014e-05 deg
peri 133.4828283416973 5.419e-05 deg
M 223.3789124892536 1.3596e-05 deg
tp 2459665.755227627764
(2022-Mar-27.25522763)
4.7722e-05 TDB
period 1225.959220481394
3.36
7.7693e-06
2.127e-08
d
yr
n .2936476140361665 1.8609e-09 deg/d
Q 2.683662738807593 1.1338e-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 = .787702 au 
 Jupiter MOID = 2.57249 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 = 2.57249 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 17.3   n/a MPO527859  

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

[ hide close-approach data ]
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 14 CATAB v2.0f-lin.ifort 2020-Nov-11 22:14:01 2020-Nov-11 22:14
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 14 CATAB v2.0f-lin.ifort 2020-Nov-11 22:14:01 2020-Nov-11 22:14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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