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31982 Johnwallis (2000 HS20)
Classification: Main-belt Asteroid          SPK-ID: 2031982
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1553879888832773 8.5035e-08  
a 3.194835469744839 6.0303e-08 AU
q 2.698396411288228 2.8415e-07 AU
i 2.249827433947512 1.2379e-05 deg
node 239.1405744475252 0.00029193 deg
peri 24.84873850454517 0.00029569 deg
M 147.3642553297015 4.7491e-05 deg
tp 2455946.690807971844
(2012-Jan-20.19080797)
0.00026934 JED
period 2085.792843335361
5.71
5.9054e-05
1.617e-07
d
yr
n .1725962389555088 4.8867e-09 deg/d
Q 3.69127452820145 6.9673e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      330  
   data-arc span      6324 days (17.31 yr)  
   first obs. used      1996-10-05  
   last obs. used      2014-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .62048  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Feb-19 18:49:16  

Additional Information
 Earth MOID = 1.68266 AU 
 T_jup = 3.176 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO272791  

31982 Johnwallis           Discovered 2000 Apr. 30 by P. G. Comba at Prescott.
John Wallis (1616-1703) was an professor of geometry at Oxford. His fame rests on a formula that represents \pi as an infinite product and on the invention of the symbol {i}nfty for infinity.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02

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