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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4595675982093561 0.00012196  
a 1.82308667113733 0.00041297 au
q .985255108355257 8.4622e-07 au
i 7.627317345557399 0.0015594 deg
node 293.7912899910219 2.0191e-05 deg
peri 171.3164935120195 0.00039071 deg
M 351.6406527506134 0.0026129 deg
tp 2459221.377537202286
(2021-Jan-06.87753720)		 0.00057765 TDB
period 899.1029046405781
2.46		 0.3055
0.0008364		 d
yr
n .4003991068674305 0.00013605 deg/d
Q 2.660918233919403 0.00060275 au
   Orbit Determination Parameters
   # obs. used (total)      83  
   data-arc span      4 days  
   first obs. used      2021-01-13  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .38203  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:54  

Additional Information
 Earth MOID = .00498178 au 
 Jupiter MOID = 2.50587 au 
 T_jup = 3.896 
[ 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 27.5   .43156 E2021D54 autocmod 2.8

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