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(2021 AC)
Classification: Apollo [NEO]          SPK-ID: 54104073
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07450167129169571 0.00011217  
a 1.036468191288306 0.00020788 au
q .9592495787966467 7.6129e-05 au
i 26.61521384441544 0.019574 deg
node 285.2524934668798 8.068e-05 deg
peri 251.4289396475877 0.10902 deg
M 278.0468096434579 0.12045 deg
tp 2459288.239621891955
(2021-Mar-14.73962189)
0.10256 TDB
period 385.4183558161166
1.06
0.11595
0.0003175
d
yr
n .9340499604324926 0.000281 deg/d
Q 1.113686803779966 0.00022336 au
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      18 days  
   first obs. used      2021-01-02  
   last obs. used      2021-01-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .61263  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:25  

Additional Information
 Earth MOID = .0232342 au 
 Jupiter MOID = 3.98976 au 
 T_jup = 5.816 
[ 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 23.70   .39553 E2021-BA4 autocmod 2.8

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