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(2021 AH)
Classification: Apollo [NEO]          SPK-ID: 54104249
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6815262709612917 0.00035888  
a 1.680629270480308 0.001466 au
q .5352362709014675 0.00013651 au
i .2984698621357598 0.00050503 deg
node 280.737377340777 0.0037273 deg
peri 279.9239414821541 0.0026969 deg
M 330.3454323254438 0.04507 deg
tp 2459266.053428068301
(2021-Feb-20.55342807)
0.013856 TDB
period 795.8043551191865
2.18
1.0413
0.002851
d
yr
n .4523724929176636 0.00059191 deg/d
Q 2.826022270059148 0.0024652 au
  Orbit Determination Parameters
   # obs. used (total)      33  
   first obs. used      2021-01-03  
   last obs. used      2021-01-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .24705  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:27  

Additional Information
 Earth MOID = .000216345 au 
 Jupiter MOID = 2.13209 au 
 T_jup = 3.928 
[ 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 28.49   .1865 E2021A28 autocmod 2.8

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