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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936178665593473 1.7869e-07  
a 2.533134757174889 1.8107e-08 AU
q 2.042674609783357 4.616e-07 AU
i 10.49041507775794 1.6082e-05 deg
node 280.85842862 3.2596e-05 deg
peri 149.5957915605601 4.733e-05 deg
M 94.47387870964579 2.5874e-05 deg
tp 2456614.048397042367
(2013-Nov-17.54839704)
0.00010737 JED
period 1472.603633564411
4.03
1.5789e-05
4.323e-08
d
yr
n .24446496789406 2.6211e-09 deg/d
Q 3.023594904566422 2.1613e-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 = 1.06446 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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