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31982 Johnwallis (2000 HS20)
Classification: Outer 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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .153000729297265 6.6318e-08  
a 3.202763264101841 4.8642e-08 au
q 2.71273814892777 2.299e-07 au
i 2.247368599930553 7.4791e-06 deg
node 238.8679633624239 0.00022989 deg
peri 24.44798101753511 0.00023243 deg
M 285.8652413250399 3.7462e-05 deg
tp 2458031.626841086769
(2017-Oct-05.12684109)
0.00022346 JED
period 2093.56131408922
5.73
4.7694e-05
1.306e-07
d
yr
n .1719557949305219 3.9173e-09 deg/d
Q 3.692788379275912 5.6084e-08 au
  Orbit Determination Parameters
   # obs. used (total)      388  
   data-arc span      7101 days (19.44 yr)  
   first obs. used      1996-10-05  
   last obs. used      2016-03-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57893  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Mar-24 17:08:09  

Additional Information
 Earth MOID = 1.69714 au 
 Jupiter MOID = 1.37974 au 
 T_jup = 3.174 
[ 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 15.1 mag n/a MPO365632  

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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