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(2021 AC6)
Classification: Apollo [NEO]          SPK-ID: 54105525
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3249479560309127 0.0005004  
a 1.270807144337409 0.00084925 au
q .8578609602754868 6.2684e-05 au
i 20.7911509938909 0.023091 deg
node 299.4253057142639 0.00083427 deg
peri 245.7165411891057 0.022135 deg
M 302.0417223132936 0.07827 deg
tp 2459284.742426753761
(2021-Mar-11.24242675)
0.02932 TDB
period 523.2604356411043
1.43
0.52453
0.001436
d
yr
n .6879939232533875 0.00068966 deg/d
Q 1.683753328399331 0.0011252 au
  Orbit Determination Parameters
   # obs. used (total)      45  
   data-arc span      6 days  
   first obs. used      2021-01-12  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .39403  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-19 05:21:35  

Additional Information
 Earth MOID = .0149032 au 
 Jupiter MOID = 3.41887 au 
 T_jup = 4.968 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459228.5 (2021-Jan-14.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3250099565964334 0.00050026  
q .8578128550493767 6.2508e-05 au
tp 2459284.741877443810
(2021-Mar-11.24187744)
0.029324 TDB
node 299.4232639996365 0.00084144 deg
peri 245.7228484648787 0.022165 deg
i 20.79460858944508 0.023082 deg
  Orbit Determination Parameters
   # obs. used (total)      45  
   data-arc span      6 days  
   first obs. used      2021-01-12  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .39403  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-19 05:21:35  

Additional Information
 Jupiter MOID = 3.41887 au 
 T_jup = 4.968 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.502624891628019E-7 -3.124021169249906E-8 -1.466867171428738E-5 4.20829253670568E-7 -1.108331983087236E-5 1.154704697540633E-5
q -3.124021169249906E-8 3.907269227161736E-9 1.830082573367488E-6 -5.248260904729064E-8 1.38174310898931E-6 -1.441433620668672E-6
tp -1.466867171428738E-5 1.830082573367488E-6 .0008599106628836121 -2.467262799437896E-5 .0006498656030463733 -.0006768060614581306
node 4.20829253670568E-7 -5.248260904729064E-8 -2.467262799437896E-5 7.080164268929147E-7 -1.864881728810256E-5 1.94167994123138E-5
peri -1.108331983087236E-5 1.38174310898931E-6 .0006498656030463733 -1.864881728810256E-5 .0004912662712158835 -.0005113769062910523
i 1.154704697540633E-5 -1.441433620668672E-6 -.0006768060614581306 1.94167994123138E-5 -.0005113769062910523 .0005327788295161482

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 25.3   .40741 E2021D54 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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