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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1204298020156109 6.6271e-08  
a 2.641763010536301 2.149e-08 AU
q 2.32361601420525 1.7044e-07 AU
i 5.464772372362028 7.2346e-06 deg
node 184.7385151647145 5.8381e-05 deg
peri 152.8495313433799 6.4273e-05 deg
M 141.7337641753599 2.8908e-05 deg
tp 2456383.038292066036
(2013-Mar-31.53829207)
0.00012314 JED
period 1568.336353370278
4.29
1.9137e-05
5.239e-08
d
yr
n .2295425973047029 2.8009e-09 deg/d
Q 2.959910006867352 2.4078e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      977  
   data-arc span      10521 days (28.80 yr)  
   first obs. used      1986-06-26  
   last obs. used      2015-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52236  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 16:09:39  

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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