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85559 Villecroze (1998 AC5)
Classification: Main-belt Asteroid          SPK-ID: 2085559
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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.

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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08762608518173445 8.4884e-08  
a 2.655092315186272 2.6635e-08 au
q 2.422436969810391 2.2666e-07 au
i 10.06691194796343 6.5727e-06 deg
node 101.5752605866065 4.2995e-05 deg
peri 148.2105765951668 5.98e-05 deg
M 331.7578042373513 4.1642e-05 deg
tp 2457724.469207162849
0.00018299 JED
period 1580.221132722578
n .2278162166960472 3.4281e-09 deg/d
Q 2.887747660562153 2.8969e-08 au
  Orbit Determination Parameters
   # obs. used (total)      432  
   data-arc span      6676 days (18.28 yr)  
   first obs. used      1998-01-05  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .65617  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 15:30:40  

Additional Information
 Earth MOID = 1.41344 au 
 Jupiter MOID = 2.17339 au 
 T_jup = 3.361 
[ 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 15.5 mag n/a MPO320051  

85559 Villecroze           Discovered 1998 Jan. 8 by S. Banh at the Dominion Astrophysical Observatory.
The discoverer is thankful for having completed her undergraduate degree in physics and astronomy, giving her the opportunity to work as a student at the DAO and then at the Canada-France-Hawaii telescope. It was in Hawaii that she met her husband Jean-Louis Villecroze, who is the most important person in her life.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050407/MPCPages.arcLast Updated: 2005-04-15

Alternate Designations
 1998 AC5 = 1999 JP7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-May-04 11:43 UT
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