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13642 Ricci (1996 HX)
Classification: Main-belt Asteroid          SPK-ID: 2013642
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1636314304562159 7.7658e-08  
a 3.02252663316967 2.9749e-08 AU
q 2.527946276592107 2.2366e-07 AU
i 6.206222340813186 9.5175e-06 deg
node 2.520659854708328 5.7976e-05 deg
peri 316.2200858581006 6.2859e-05 deg
M 122.4956264429067 2.7359e-05 deg
tp 2456347.411985464761
(2013-Feb-23.91198546)
0.00014225 JED
period 1919.347588644465
5.25
2.8337e-05
7.758e-08
d
yr
n .1875637337029971 2.7692e-09 deg/d
Q 3.517106989747233 3.4617e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      754  
   data-arc span      6756 days (18.50 yr)  
   first obs. used      1996-04-19  
   last obs. used      2014-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52282  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:20:15  

Additional Information
 Earth MOID = 1.52052 AU 
 T_jup = 3.216 
[ 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 13.5 mag n/a MPO279659  

13642 Ricci           Discovered 1996 Apr. 19 by P. G. Comba at Prescott.
Gregorio Ricci-Curbastro (1853-1925) was a professor of mathematics at the University of Padua. Building on the work of Riemann and Christoffel, he developed tensor analysis, a formalism for the study of those properties of physical systems or abstract spaces that remain invariant under changes of coordinates.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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