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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204297927432564 6.6997e-08  
a 2.641763015089382 2.1967e-08 AU
q 2.323616042705368 1.7306e-07 AU
i 5.464773330048198 7.6616e-06 deg
node 184.7385246118431 6.0582e-05 deg
peri 152.8495130576136 6.6878e-05 deg
M 141.7337706068254 2.9621e-05 deg
tp 2456383.038262451128
(2013-Mar-31.53826245)
0.00012669 JED
period 1568.336357424822
4.29
1.9562e-05
5.356e-08
d
yr
n .2295425967112776 2.8631e-09 deg/d
Q 2.959909987473397 2.4613e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      859  
   data-arc span      10433 days (28.56 yr)  
   first obs. used      1986-06-26  
   last obs. used      2015-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53151  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:30:05  

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 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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