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(2021 AC1)
Classification: Apollo [NEO]          SPK-ID: 54104279
[ 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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3104033301573666 4.7888e-05  
a 1.40803403564087 9.495e-05 au
q .9709755820030275 1.9511e-06 au
i 7.093843752979361 0.00092099 deg
node 108.3625090617353 0.00020918 deg
peri 29.14300248213593 0.00042346 deg
M 212.9061814210321 0.014941 deg
tp 2459249.850404982634
(2021-Feb-04.35040498)		 0.00010782 TDB
period 610.2645689734201
1.67		 0.061729
0.000169		 d
yr
n .5899080797130133 5.967e-05 deg/d
Q 1.845092489278712 0.00012442 au
   Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      35 days  
   first obs. used      2020-12-11  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .46913  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-21 05:19:35  

Additional Information
 Earth MOID = .0130552 au 
 Jupiter MOID = 3.19269 au 
 T_jup = 4.677 
[ 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 25.231   .30123 9 autocmod 2.8

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