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(2021 AP6)
Classification: Apollo [NEO]          SPK-ID: 54105986
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 .2923752772195366 1.2638e-05  
a 1.383561560400498 2.4262e-05 au
q .9790423656281075 3.1862e-07 au
i 1.08921527191631 4.4288e-05 deg
node 346.3752867189745 0.00012359 deg
peri 155.369392339396 0.00014833 deg
M 328.4811262137731 0.00079887 deg
tp 2459252.543242674265
(2021-Feb-07.04324267)
5.1822e-05 TDB
period 594.4237566928008
1.63
0.015636
4.281e-05
d
yr
n .6056285536145699 1.593e-05 deg/d
Q 1.788080755172888 3.1356e-05 au
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      69 days  
   first obs. used      2021-01-03  
   last obs. used      2021-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .41937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-15 11:30:02  

Additional Information
 Earth MOID = .0017367 au 
 Jupiter MOID = 3.23041 au 
 T_jup = 4.747 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459276.5 (2021-Mar-03.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2904477625449384 1.2794e-05  
q .9785676950653563 2.7903e-07 au
tp 2459252.762067135902
(2021-Feb-07.26206714)
2.5568e-05 TDB
node 344.9824993776635 0.00027661 deg
peri 157.0168450303113 0.00011955 deg
i 1.113228190611497 4.2112e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      69 days  
   first obs. used      2021-01-03  
   last obs. used      2021-03-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .41937  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Mar-15 11:30:02  

Additional Information
 Jupiter MOID = 3.23041 au 
 T_jup = 4.747 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.636831716180073E-10 -3.549003510438058E-12 2.77970681871169E-10 3.370856844523678E-9 -1.098512337600373E-9 5.374151351720327E-10
q -3.549003510438058E-12 7.78588886249147E-14 -5.783630619989311E-12 -7.264093225897538E-11 2.36476521999432E-11 -1.15974584190055E-11
tp 2.77970681871169E-10 -5.783630619989311E-12 6.537233396473736E-10 5.895522316187429E-9 -1.831330955451403E-9 9.354436889820797E-10
node 3.370856844523678E-9 -7.264093225897538E-11 5.895522316187429E-9 7.651383474287753E-8 -2.95131225400434E-8 1.101725551663212E-8
peri -1.098512337600373E-9 2.36476521999432E-11 -1.831330955451403E-9 -2.95131225400434E-8 1.429284278533968E-8 -3.529845235932804E-9
i 5.374151351720327E-10 -1.15974584190055E-11 9.354436889820797E-10 1.101725551663212E-8 -3.529845235932804E-9 1.773401735646325E-9

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 26.8   .40588 E2021D54 autocmod 2.8

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