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10781 Ritter (1991 PV31)
Classification: Main-belt Asteroid          SPK-ID: 2010781
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1215541574291381 5.9923e-08  
a 2.638909830002746 1.9363e-08 au
q 2.318139369085292 1.5707e-07 au
i 5.475416670599182 6.904e-06 deg
node 184.6773358656497 5.5281e-05 deg
peri 153.5323095956713 6.1194e-05 deg
M 278.8443158839395 2.8553e-05 deg
tp 2457953.481297766270
(2017-Jul-18.98129777)
0.00012583 JED
period 1565.796266520657
4.29
1.7233e-05
4.718e-08
d
yr
n .2299149689505602 2.5305e-09 deg/d
Q 2.9596802909202 2.1716e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1058  
   data-arc span      10887 days (29.81 yr)  
   first obs. used      1986-06-26  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51573  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:09:47  

Additional Information
 Earth MOID = 1.31007 au 
 Jupiter MOID = 2.41029 au 
 T_jup = 3.379 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.0 mag n/a MPO319220  

10781 Ritter           Discovered 1991 Aug. 6 by F. Borngen at Tautenburg.
As the result of numerous physical experiments he conducted during the decade he lived in Jena, the German scientist Johann Wilhelm Ritter (1776-1810) discovered the electrochemical voltage ranking of the metals (1798) and the ultraviolet part of the radiation in the solar spectrum (1801).
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000320/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1991 PV31 = 1991 PJ20 = 1997 XM1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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