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74503 Madola (1999 DN4)
Classification: Main-belt Asteroid          SPK-ID: 2074503
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB
Reference: MPO153999 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.1878913 n/a  
a 3.0111141 n/a AU
q 2.4453520 n/a AU
i 17.18729 n/a deg
node 357.19029 n/a deg
peri 201.04663 n/a deg
M 355.64592 n/a deg
tp 2455223.5825164
(2010-Jan-27.08251641)		 n/a JED
period 1908.4871910
5.23		 n/a
n/a		 d
yr
n 0.18863108 n/a deg/d
Q 3.5768762 n/a AU
   Orbit Determination Parameters
   # obs. used (total)      94  
   first obs. used      1994-??-??  
   last obs. used      2009-02-03  
   # oppositions      7  
   planetary ephem.      DE403  
   quality code      1  
   fit RMS      0.68  
   data source      MPC:mpn  
   producer      MPC  

Additional Information
 T_jup = 3.156 
 MPC critical-list numbered object 

[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.0 mag n/a MPO153999  

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
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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