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(2021 AD4)
Classification: Aten [NEO]          SPK-ID: 54105103
[ 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08555089452200473 8.0286e-05  
a .9094931095976657 6.3349e-05 au
q .8316851605099858 0.00013095 au
i 9.482701148452509 0.010078 deg
node 106.7579253333104 0.0012991 deg
peri 194.3594321707973 0.0013918 deg
M 273.4600405103827 0.026882 deg
tp 2459076.657334154456
(2020-Aug-15.15733415)		 0.015702 TDB
period 316.809026226705
0.87		 0.0331
9.062e-05		 d
yr
n 1.136331260152885 0.00011872 deg/d
Q .9873010586853457 6.8768e-05 au
   Orbit Determination Parameters
   # obs. used (total)      42  
   data-arc span      9 days  
   first obs. used      2021-01-09  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .44989  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-19 05:27:48  

Additional Information
 Earth MOID = .00122592 au 
 Jupiter MOID = 4.07112 au 
 T_jup = 6.543 
[ 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 25.649   .29006 5 autocmod 2.8

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