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9811 Cavadore (1998 ST)
Classification: Main-belt Asteroid          SPK-ID: 2009811
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1568380866269145 5.5583e-08  
a 2.271713284724534 9.0663e-09 au
q 1.915422119783395 1.2558e-07 au
i 1.529738964462912 5.4385e-06 deg
node 27.24750767917731 0.00014722 deg
peri 305.3354715511992 0.00014784 deg
M 153.0486461642349 1.4054e-05 deg
tp 2458468.813424505056
(2018-Dec-16.31342450)
4.8155e-05 TDB
period 1250.629600295731
3.42
7.4868e-06
2.05e-08
d
yr
n .2878550131188901 1.7232e-09 deg/d
Q 2.628004449665673 1.0488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      989  
   data-arc span      14023 days (38.39 yr)  
   first obs. used      1981-10-30  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52779  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:10:57  

Additional Information
 Earth MOID = .905516 au 
 Jupiter MOID = 2.71398 au 
 T_jup = 3.595 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO452308  

9811 Cavadore           Discovered 1998 Sept. 16 by the OCA-DLR Asteroid Survey at Caussols.
Cyril Cavadore (b. 1969) is a professional CCD specialist at the European Southern Observatory and astronomical software programmer. He was one of the writers of the computer package used by many French amateur astronomers to discover minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20000523/MPCPages.arcLast Updated: 2013-03-29

[ show close-approach data ]
Alternate Designations
 1998 ST = 1981 UA3 = 1991 RS18 = 1994 LP9 = 1997 GN33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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