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(2021 AR7)
Classification: Apollo [NEO]          SPK-ID: 54106290
[ 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 2459230.5 (2021-Jan-16.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5870783272799736 0.0016203  
a 2.46030721328352 0.009848 au
q 1.015914169914178 8.0045e-05 au
i 1.575699180969027 0.0035454 deg
node 9.14443529219829 0.076894 deg
peri 102.9191360702953 0.084142 deg
M .83865621944114 0.0047785 deg
tp 2459227.216296710642
(2021-Jan-12.71629671)		 0.005725 TDB
period 1409.556331623731
3.86		 8.4632
0.02317		 d
yr
n .2553995125439931 0.0015335 deg/d
Q 3.904700256652863 0.01563 au
   Orbit Determination Parameters
   # obs. used (total)      22  
   data-arc span      2 days  
   first obs. used      2021-01-15  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .4961  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-17 06:53:59  

Additional Information
 Earth MOID = .0420033 au 
 Jupiter MOID = 1.24746 au 
 T_jup = 3.228 
[ 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 26.6   .47362 E2021B55 autocmod 2.8

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