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(2020 HW2)
Classification: Aten [NEO]          SPK-ID: 54016641
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458959.5 (2020-Apr-20.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3754547505066297 0.0021462  
a .8135713632319932 0.00052108 au
q .5081121300303866 0.0020715 au
i 3.290626747580141 0.019729 deg
node 91.44688606670223 0.046914 deg
peri 271.3681507682043 0.044984 deg
M 236.6314993722812 0.22094 deg
tp 2459051.353073515681
(2020-Jul-20.85307352)
0.25274 TDB
period 268.0352464153685
0.73
0.25751
0.000705
d
yr
n 1.343106941398728 0.0012904 deg/d
Q 1.1190305964336 0.00071672 au
  Orbit Determination Parameters
   # obs. used (total)      27  
   data-arc span      4 days  
   first obs. used      2020-04-18  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .39975  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-22 03:42:08  

Additional Information
 Earth MOID = .0446038 au 
 Jupiter MOID = 4.33368 au 
 T_jup = 7.127 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 4.606274178370434E-6 -4.445969524792238E-6 -.000542432640423511 8.198916469364283E-5 -7.632768576234948E-5 4.23188859540768E-5
q -4.445969524792238E-6 4.291251414395291E-6 .0005235551802126851 -7.906521709498565E-5 7.359960570476487E-5 -4.084783067494405E-5
tp -.000542432640423511 .0005235551802126851 .06387665903936715 -.009653487366020718 .008986854511760234 -.004983491443130914
node 8.198916469364283E-5 -7.906521709498565E-5 -.009653487366020718 .002200931773958273 -.002108657832749283 .000735167910643356
peri -7.632768576234948E-5 7.359960570476487E-5 .008986854511760234 -.002108657832749283 .002023567881062789 -.0006829534205714367
i 4.23188859540768E-5 -4.084783067494405E-5 -.004983491443130914 .000735167910643356 -.0006829534205714367 .0003892353732832927

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 24.865   .31141 1 autocmod 2.8

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