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JPL Small-Body Database Browser
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66978 (1999 XE86)
Classification: Main-belt Asteroid          SPK-ID: 2066978
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1886334733915968 4.2935e-08  
a 2.561463746526893 1.3265e-08 au
q 2.078285943052872 1.0862e-07 au
i 9.580239502915791 4.7011e-06 deg
node 100.2438179573133 2.8108e-05 deg
peri 85.24214944487585 3.1472e-05 deg
M 294.0037755760951 1.6058e-05 deg
tp 2459275.003152910830
(2021-Mar-01.50315291)
6.7801e-05 TDB
period 1497.375583384197
4.10
1.1632e-05
3.185e-08
d
yr
n .2404206426195152 1.8676e-09 deg/d
Q 3.044641550000914 1.5767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1076  
   data-arc span      8781 days (24.04 yr)  
   first obs. used      1996-01-12  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53339  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 15:07:02  

Additional Information
 Earth MOID = 1.10646 au 
 Jupiter MOID = 1.99174 au 
 T_jup = 3.390 
[ 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 14.6   n/a MPO453066  

66978 (1999 XE86)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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