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56516 (2000 HE20)
Classification: Main-belt Asteroid          SPK-ID: 2056516
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1393846662258422 2.9406e-08  
a 2.442113989402216 9.6649e-09 au
q 2.101720746103928 6.9933e-08 au
i 7.078194783082841 2.9381e-06 deg
node 123.4669741848448 3.9945e-05 deg
peri 191.1029885647696 4.3737e-05 deg
M 76.39499172531377 1.8632e-05 deg
tp 2458904.692138725709
(2020-Feb-25.19213873)		 7.198e-05 TDB
period 1393.950410278774
3.82		 8.2751e-06
2.266e-08		 d
yr
n .2582588285389608 1.5331e-09 deg/d
Q 2.782507232700504 1.1012e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1173  
   data-arc span      8034 days (22.00 yr)  
   first obs. used      1999-01-17  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53038  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 05:37:20  

Additional Information
 Earth MOID = 1.0862 au 
 Jupiter MOID = 2.47976 au 
 T_jup = 3.477 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.39   n/a E2021B10  

56516 (2000 HE20)          Discovered 2000-Apr-27 by Spacewatch at Kitt Peak
Reference: 20030318/Numbers.arcLast Updated: 2004-04-19

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