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JPL Small-Body Database Browser
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20418 (1998 SH71)
Classification: Main-belt Asteroid          SPK-ID: 2020418
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1676008460977687 4.0417e-08  
a 2.393865082499998 9.721e-09 au
q 1.992651269229094 9.4645e-08 au
i 2.89645632179513 4.3724e-06 deg
node 144.1038347079088 8.2567e-05 deg
peri 262.4616232394122 8.3683e-05 deg
M 179.9317082014823 1.3929e-05 deg
tp 2457924.334303510923
(2017-Jun-19.83430351)
5.0888e-05 TDB
period 1352.844660728132
3.70
8.2404e-06
2.256e-08
d
yr
n .2661059399134854 1.6209e-09 deg/d
Q 2.795078895770903 1.135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      911  
   data-arc span      14534 days (39.79 yr)  
   first obs. used      1979-07-24  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57608  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:21  

Additional Information
 Earth MOID = 1.00417 au 
 Jupiter MOID = 2.58657 au 
 T_jup = 3.509 
[ 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 15.3   n/a MPO290619  

20418 (1998 SH71)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SH71 = 1979 OF6 = 2000 ES42 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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