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(2020 HL)
Classification: Apollo [NEO]          SPK-ID: 54016550
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.


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Orbital Elements at Epoch 2458960.5 (2020-Apr-21.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4036965259238703 0.0018016  
a 1.521565698961727 0.0039983 au
q .9073149123259523 0.00035706 au
i 5.014517214450485 0.020404 deg
node 18.82414703758549 0.0019318 deg
peri 255.4255000920177 0.008059 deg
M 331.376509858287 0.12848 deg
tp 2459015.007288389758
(2020-Jun-14.50728839)
0.029812 TDB
period 685.5426687368508
1.88
2.7022
0.007398
d
yr
n .5251314271412446 0.0020699 deg/d
Q 2.135816485597501 0.0056125 au
  Orbit Determination Parameters
   # obs. used (total)      30  
   data-arc span      10 days  
   first obs. used      2020-04-16  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .68589  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-22 06:33:15  

Additional Information
 Earth MOID = .0372212 au 
 Jupiter MOID = 3.00874 au 
 T_jup = 4.405 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.245827216056088E-6 -6.432768244601586E-7 -5.370654525188107E-5 -3.458505594199759E-6 1.450808556414346E-5 3.675733774228057E-5
q -6.432768244601586E-7 1.274901771831513E-7 1.064378574349403E-5 6.85509121544649E-7 -2.87563412772765E-6 -7.284688985941136E-6
tp -5.370654525188107E-5 1.064378574349403E-5 .0008887842896030906 5.728108010860477E-5 -.0002399865183866664 -.0006081258235342303
node -3.458505594199759E-6 6.85509121544649E-7 5.728108010860477E-5 3.731936423102378E-6 -1.546681019343387E-5 -3.911978085762653E-5
peri 1.450808556414346E-5 -2.87563412772765E-6 -.0002399865183866664 -1.546681019343387E-5 6.494697370770288E-5 .0001643033800133068
i 3.675733774228057E-5 -7.284688985941136E-6 -.0006081258235342303 -3.911978085762653E-5 .0001643033800133068 .0004163113702426818

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 25.048   .4213 5 autocmod 2.8

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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