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74503 Madola (1999 DN4)
Classification: Main-belt Asteroid          SPK-ID: 2074503
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1842804577991821 2.3061e-07  
a 3.014186653479732 4.3352e-08 au
q 2.458730957084302 6.7354e-07 au
i 17.17904894132818 1.8425e-05 deg
node 357.0053228782022 3.4801e-05 deg
peri 200.8488247770246 4.6474e-05 deg
M 88.45244583823587 2.6516e-05 deg
tp 2457130.864426367526
0.00013958 JED
period 1911.409061733445
n .1883427295638738 4.0633e-09 deg/d
Q 3.569642349875161 5.1341e-08 au
  Orbit Determination Parameters
   # obs. used (total)      212  
   data-arc span      7693 days (21.06 yr)  
   first obs. used      1994-04-02  
   last obs. used      2015-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54554  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 18:36:03  

Additional Information
 Earth MOID = 1.46517 au 
 Jupiter MOID = 1.43537 au 
 T_jup = 3.156 
[ 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 15.3 mag n/a MPO337819  

74503 Madola           Discovered 1999 Feb. 23 by D. Bergeron at Val-des-Bois.
Christian Marois (b. 1974), René Doyon (b. 1963) and David Lafrenière (b. 1978) developed instruments that allowed seeing an extrasolar planetary system. Doyon was director of the Mt. Mégantic Observatory; Marois and Lafrenière were postdoctoral fellows at the Herzberg Institute and the University of Toronto.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090409/MPCPages.arcLast Updated: 2009-04-10

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-May-02 08:16 UT
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