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78393 Dillon (2002 PW165)
Classification: Main-belt Asteroid          SPK-ID: 2078393
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1090754255353876 4.166e-08  
a 2.636020807557458 1.4843e-08 au
q 2.348495716252992 1.1226e-07 au
i 2.18737685791313 5.2173e-06 deg
node 15.11985277374038 0.00010278 deg
peri 296.847241903389 0.00010634 deg
M 68.93416080915462 2.394e-05 deg
tp 2458701.167639743487
(2019-Aug-05.66763974)
0.00010444 TDB
period 1563.22566964555
4.28
1.3204e-05
3.615e-08
d
yr
n .2302930453295507 1.9452e-09 deg/d
Q 2.923545898861924 1.6462e-08 au
  Orbit Determination Parameters
   # obs. used (total)      603  
   data-arc span      13059 days (35.75 yr)  
   first obs. used      1984-03-05  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56221  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:40:13  

Additional Information
 Earth MOID = 1.33531 au 
 Jupiter MOID = 2.307 au 
 T_jup = 3.388 
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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 15.7   n/a MPO432334  

78393 Dillon           Discovered 2002 Aug. 8 by A. Lowe at Palomar.
William G. Dillon (b. 1957) is the founder of the Fort Bend Astronomy Club's Asteroid Team, which has discovered up to 100 minor planets per year. A tireless observer, he is the AAVSO's president for 2003-2005, and received its Director's Award in 1996. His wife Elizabeth's steadfast support has made his success possible.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040504/MPCPages.arcLast Updated: 2004-05-11

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