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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936178319353337 1.4145e-07  
a 2.533134759798537 1.6133e-08 AU
q 2.042674699606312 3.6452e-07 AU
i 10.49042142218385 1.3985e-05 deg
node 280.8584254459047 3.2083e-05 deg
peri 149.5957882841976 4.1771e-05 deg
M 94.47388321907948 2.1068e-05 deg
tp 2456614.048377995842
(2013-Nov-17.54837800)
8.6725e-05 JED
period 1472.603635852245
4.03
1.4068e-05
3.852e-08
d
yr
n .2444649675142599 2.3354e-09 deg/d
Q 3.023594819990763 1.9256e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      444  
   data-arc span      6319 days (17.30 yr)  
   first obs. used      1997-12-05  
   last obs. used      2015-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51983  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:34:04  

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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