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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07442539470227519 0.00011204  
a 1.036537713887743 0.00020769 au
q .9593929854078532 7.61e-05 au
i 26.61409697021259 0.019577 deg
node 285.2564979072121 9.172e-05 deg
peri 251.4860706469278 0.1093 deg
M 91.17433955162736 0.17693 deg
tp 2458902.878334089533
(2020-Feb-23.37833409)
0.21878 TDB
period 385.4571352048908
1.06
0.11585
0.0003172
d
yr
n .9339559891883723 0.00028071 deg/d
Q 1.113682442367632 0.00022315 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .61263  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-21 05:19:35  

Additional Information
 Earth MOID = .023552 au 
 Jupiter MOID = 3.99051 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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