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21822 Degiorgi (1999 TX36)
Classification: Main-belt Asteroid          SPK-ID: 2021822
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1279083760742098 7.522e-08  
a 2.520989374000861 2.5824e-08 AU
q 2.198533717072072 1.9297e-07 AU
i 12.66379651276497 8.2101e-06 deg
node 147.6519066961081 3.2816e-05 deg
peri 100.3542352679011 5.4096e-05 deg
M 66.95289010519897 4.7464e-05 deg
tp 2456728.592130263803
0.00019262 JED
period 1462.025507057683
n .2462337341326539 3.7834e-09 deg/d
Q 2.84344503092965 2.9127e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      675  
   data-arc span      9262 days (25.36 yr)  
   first obs. used      1989-02-13  
   last obs. used      2014-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54094  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:39:31  

Additional Information
 Earth MOID = 1.22807 AU 
 T_jup = 3.411 
[ 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 13.9 mag n/a MPO263540  

21822 Degiorgi           Discovered 1999 Oct. 15 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Ennio De Giorgi (1928-1996) was an outstanding Italian mathematician, known for his fundamental theorems in the calculus of variations, in minimal surface theory, in partial differential equations and in axiomatic set theory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20080718/MPCPages.arcLast Updated: 2008-07-18

[ show close-approach data ]
Alternate Designations
 1999 TX36 = 1989 CR8 = 1993 BZ13 = 1998 MH13 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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