Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1936140972937294 1.9067e-07  
a 2.534119586483202 2.0354e-08 AU
q 2.043478310311898 4.9278e-07 AU
i 10.49130116429195 1.7931e-05 deg
node 280.8660675167798 3.6746e-05 deg
peri 149.7079533622047 5.1809e-05 deg
M 45.48158881838775 2.8284e-05 deg
tp 2456614.346068783107
(2013-Nov-17.84606878)
0.00011641 JED
period 1473.462492827159
4.03
1.7752e-05
4.86e-08
d
yr
n .2443224729183717 2.9435e-09 deg/d
Q 3.024760862654506 2.4294e-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      .51421  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:31:18  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-19 22:21 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin