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(2021 AT5)
Classification: Apollo [NEO]          SPK-ID: 54105514
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 .4593717952809617 0.00012545  
a 1.822793597830932 0.00042453 au
q .9854536303686933 8.421e-07 au
i 7.626358005324052 0.0016038 deg
node 293.8073564044948 3.2934e-05 deg
peri 171.2920988061302 0.00041611 deg
M 271.5355729359491 0.03067 deg
tp 2459221.387345993064
(2021-Jan-06.88734599)
0.00059456 TDB
period 898.8861081972364
2.46
0.31402
0.0008597
d
yr
n .4004956765012189 0.00013991 deg/d
Q 2.66013356529317 0.00061954 au
  Orbit Determination Parameters
   # obs. used (total)      78  
   data-arc span      4 days  
   first obs. used      2021-01-13  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .38899  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-17 06:07:03  

Additional Information
 Earth MOID = .00529919 au 
 Jupiter MOID = 2.50663 au 
 T_jup = 3.897 
[ 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 27.543   .43122 5 autocmod 2.8

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