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31189 Tricomi (1997 YZ7)
Classification: Main-belt Asteroid          SPK-ID: 2031189
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936140686957493 1.7895e-07  
a 2.534119582669419 1.8439e-08 AU
q 2.043478379707219 4.628e-07 AU
i 10.49129021981385 1.6083e-05 deg
node 280.86606869 3.2586e-05 deg
peri 149.707945215937 4.7204e-05 deg
M 45.48159222763079 2.5935e-05 deg
tp 2456614.346055249476
(2013-Nov-17.84605525)
0.00010694 JED
period 1473.462489500876
4.03
1.6082e-05
4.403e-08
d
yr
n .2443224734699199 2.6667e-09 deg/d
Q 3.02476078563162 2.201e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      427  
   data-arc span      5948 days (16.28 yr)  
   first obs. used      1997-12-05  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51854  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-10 02:47:13  

Additional Information
 Earth MOID = 1.06475 AU 
 T_jup = 3.400 
[ 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 14.9 mag n/a MPO279840  

31189 Tricomi           Discovered 1997 Dec. 27 by P. G. Comba at Prescott.
Francesco Giacomo Tricomi (1897-1978) was a professor in Torino and a prolific researcher in classical mathematical analysis. In the 1920s he solved a partial differential equation with mixed (elliptic/hyperbolic) boundary conditions. In the 1940s Tricomi's equation became the basic tool for modeling transonic flow.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20020328/MPCPages.arcLast Updated: 2003-10-02
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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