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(2021 AA6)
Classification: Aten [NEO]          SPK-ID: 54105522
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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3923941386676296 0.00048538  
a .8983353592184339 0.00010069 au
q .5458338297032409 0.00037488 au
i 14.39885002178926 0.024118 deg
node 295.8140800569004 0.00094048 deg
peri 307.1721433217251 0.0039539 deg
M 239.9739205364518 0.072972 deg
tp 2459304.188188689190
(2021-Mar-30.68818869)
0.045609 TDB
period 310.9969774480942
0.85
0.05229
0.0001432
d
yr
n 1.157567520282683 0.00019463 deg/d
Q 1.250836888733627 0.00014021 au
  Orbit Determination Parameters
   # obs. used (total)      39  
   data-arc span      5 days  
   first obs. used      2021-01-12  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .36375  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:54  

Additional Information
 Earth MOID = .0063653 au 
 Jupiter MOID = 3.81151 au 
 T_jup = 6.533 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459227.5 (2021-Jan-13.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3925013725836042 0.00048501  
q .5457609111020586 0.00037454 au
tp 2459304.173033091103
(2021-Mar-30.67303309)
0.045542 TDB
node 295.8113153904492 0.00092815 deg
peri 307.1677213353523 0.0039393 deg
i 14.40362331595151 0.024106 deg
  Orbit Determination Parameters
   # obs. used (total)      39  
   data-arc span      5 days  
   first obs. used      2021-01-12  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .36375  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:54  

Additional Information
 Jupiter MOID = 3.81151 au 
 T_jup = 6.533 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.352301995527039E-7 -1.816504737637608E-7 -2.208803774899308E-5 -4.501377316704303E-7 -1.899252500368646E-6 1.169127205516681E-5
q -1.816504737637608E-7 1.402775546482471E-7 1.705664039698049E-5 3.476098817720777E-7 1.465952495090284E-6 -9.028305247082136E-6
tp -2.208803774899308E-5 1.705664039698049E-5 .002074089026880479 4.226752178715915E-5 .0001784127198517242 -.00109780393372228
node -4.501377316704303E-7 3.476098817720777E-7 4.226752178715915E-5 8.614575469912555E-7 3.633680033669637E-6 -2.2372813064832E-5
peri -1.899252500368646E-6 1.465952495090284E-6 .0001784127198517242 3.633680033669637E-6 1.551802927588796E-5 -9.438937143251996E-5
i 1.169127205516681E-5 -9.028305247082136E-6 -.00109780393372228 -2.2372813064832E-5 -9.438937143251996E-5 .0005810758981326948

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   .36322 E2021D54 autocmod 2.8

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