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(2021 AA2)
Classification: Apollo [NEO]          SPK-ID: 54104720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6401543408926197 0.00077155  
a 2.743176548202065 0.005892 au
q .9871201730356804 3.7124e-06 au
i 2.776529777539281 0.0024818 deg
node 95.60261511467576 0.0030068 deg
peri 27.67170977882752 0.004832 deg
M 309.0058707612124 0.16443 deg
tp 2459235.569749930414
(2021-Jan-21.06974993)
0.00061454 TDB
period 1659.506912622809
4.54
5.3466
0.01464
d
yr
n .2169319074610114 0.00069892 deg/d
Q 4.499232923368449 0.0096638 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      10 days  
   first obs. used      2021-01-06  
   last obs. used      2021-01-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .3031  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-17 06:06:57  

Additional Information
 Earth MOID = .0174204 au 
 Jupiter MOID = .609996 au 
 T_jup = 3.011 
[ show covariance matrix ]

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 26.416   .40797 5 autocmod 2.8

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