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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08739388794620932 4.6918e-08  
a 2.654297758635525 1.7954e-08 au
q 2.422328357741457 1.2437e-07 au
i 10.06818890307781 4.8954e-06 deg
node 101.5567894133445 2.8415e-05 deg
peri 148.9598550573856 4.1003e-05 deg
M 335.5274124672379 3.1283e-05 deg
tp 2459307.874283085544
(2021-Apr-03.37428309)
0.00013767 TDB
period 1579.511846021506
4.32
1.6026e-05
4.388e-08
d
yr
n .2279185185643099 2.3125e-09 deg/d
Q 2.886267159529592 1.9523e-08 au
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      8150 days (22.31 yr)  
   first obs. used      1998-01-05  
   last obs. used      2020-04-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .6101  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 14:13:37  

Additional Information
 Earth MOID = 1.41149 au 
 Jupiter MOID = 2.17815 au 
 T_jup = 3.361 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.56   n/a E2021B10  

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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