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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204297977193066 6.8224e-08  
a 2.641763013120559 2.2604e-08 AU
q 2.323616027828104 1.7733e-07 AU
i 5.464777416070818 8.2994e-06 deg
node 184.738540537645 6.2204e-05 deg
peri 152.8495009730776 6.9251e-05 deg
M 141.7337678851052 3.0621e-05 deg
tp 2456383.038274998537
(2013-Mar-31.53827500)
0.00013161 JED
period 1568.336355671574
4.29
2.0129e-05
5.511e-08
d
yr
n .2295425969678839 2.946e-09 deg/d
Q 2.959909998413014 2.5326e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      835  
   data-arc span      10079 days (27.59 yr)  
   first obs. used      1986-06-26  
   last obs. used      2014-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52606  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:45:53  

Additional Information
 Earth MOID = 1.31678 AU 
 T_jup = 3.378 
[ 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 13.9 mag n/a PDS3 (MPC 34765)  

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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