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24856 Messidoro (1996 AA4)
Classification: Main-belt Asteroid          SPK-ID: 2024856
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2456000.5 (2012-Mar-14.0) TDB
Reference: MPO121265 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 0.2463563 n/a  
a 2.7180083 n/a AU
q 2.0484098 n/a AU
i 8.80460 n/a deg
node 159.75195 n/a deg
peri 304.16400 n/a deg
M 229.22783 n/a deg
tp 2456595.0487013
(2013-Oct-29.54870130)
n/a JED
period 1636.7208135
4.48
n/a
n/a
d
yr
n 0.21995199 n/a deg/d
Q 3.3876068 n/a AU
  Orbit Determination Parameters
   # obs. used (total)      195  
   first obs. used      1990-??-??  
   last obs. used      2007-06-20  
   # oppositions      9  
   planetary ephem.      DE403  
   condition code      0  
   fit RMS      0.62  
   data source      MPC:mpn  
   producer      MPCW  

Additional Information
 T_jup = 3.299 

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3 mag n/a PDS3 (MPO 12430)  

24856 Messidoro           Discovered 1996 Jan. 15 by M. Tombelli and C. Casacci at Cima Ekar.
Piero Messidoro (b. 1950) is an Italian space engineer who has developed projects and technologies in human and robotic space exploration, notably the International Space Station, new generation transportation systems and moon and Mars missions. He gives international lectures on space exploration system engineering.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100130/MPCPages.arcLast Updated: 2012-02-09

Alternate Designations
 1996 AA4 = 1994 RD19 = 1999 TD39 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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