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(2021 CJ)
Classification: Apollo [NEO]          SPK-ID: 54109943
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 2459253.5 (2021-Feb-08.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5192846778248497 0.0013118  
a 2.08915354120779 0.0058001 au
q 1.004288117635059 4.7636e-05 au
i 13.17280122474547 0.02278 deg
node 135.8761474505614 0.0011822 deg
peri 343.7199185230765 0.0026338 deg
M 5.310172685668795 0.024372 deg
tp 2459237.231028076521
(2021-Jan-22.73102808)
0.006923 TDB
period 1102.945278645829
3.02
4.5931
0.01258
d
yr
n .3263987860231831 0.0013593 deg/d
Q 3.174018964780521 0.0088119 au
  Orbit Determination Parameters
   # obs. used (total)      32  
   data-arc span      8 days  
   first obs. used      2021-02-05  
   last obs. used      2021-02-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .42122  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-27 05:51:14  

Additional Information
 Earth MOID = .0304142 au 
 Jupiter MOID = 1.95084 au 
 T_jup = 3.545 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.72080839129466E-6 6.248419748576223E-8 9.077326322242809E-6 -1.550805021054105E-6 3.437131202771221E-6 2.98829724319257E-5
q 6.248419748576223E-8 2.269223713702101E-9 3.297321266196853E-7 -5.631507306933034E-8 1.249645698237785E-7 1.085067768778706E-6
tp 9.077326322242809E-6 3.297321266196853E-7 4.792818487178504E-5 -8.181808875925211E-6 1.818766895814522E-5 .0001576290363017271
node -1.550805021054105E-6 -5.631507306933034E-8 -8.181808875925211E-6 1.397690710093869E-6 -3.099217459629001E-6 -2.69305292649338E-5
peri 3.437131202771221E-6 1.249645698237785E-7 1.818766895814522E-5 -3.099217459629001E-6 6.936829239949383E-6 5.968204422765051E-5
i 2.98829724319257E-5 1.085067768778706E-6 .0001576290363017271 -2.69305292649338E-5 5.968204422765051E-5 .0005189392212097316

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 26.23   .31804 E2021-CK0 autocmod 2.8

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