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120502 (1993 QD9)
Classification: Main-belt Asteroid          SPK-ID: 2120502
[ 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1891471346258531 6.0681e-08  
a 2.448383384853093 1.1329e-08 au
q 1.985278683142583 1.4831e-07 au
i 4.666275752665283 6.4366e-06 deg
node 357.9027034560949 5.0511e-05 deg
peri 22.26207215690467 5.2109e-05 deg
M 329.4766412914509 1.0083e-05 deg
tp 2459119.144437613034
(2020-Sep-26.64443761)		 3.9045e-05 TDB
period 1399.321678473394
3.83		 9.7119e-06
2.659e-08		 d
yr
n .2572675072058815 1.7855e-09 deg/d
Q 2.911488086563602 1.3471e-08 au
   Orbit Determination Parameters
   # obs. used (total)      526  
   data-arc span      10872 days (29.77 yr)  
   first obs. used      1991-02-08  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:46:49  

Additional Information
 Earth MOID = .988469 au 
 Jupiter MOID = 2.55777 au 
 T_jup = 3.468 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457800.5 (2017-Feb-16.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1910388439088335 6.0849e-08  
q 1.980253267405734 1.4908e-07 au
tp 2457719.658408808006
(2016-Nov-27.15840881)		 4.0913e-05 TDB
node 358.0355878317754 5.0452e-05 deg
peri 22.12755067495471 5.1998e-05 deg
i 4.670158849743874 6.4441e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      526  
   data-arc span      10872 days (29.77 yr)  
   first obs. used      1991-02-08  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56603  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:46:49  

Additional Information
 Jupiter MOID = 2.55777 au 
 T_jup = 3.468 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.702659327476284E-15 -9.054423092410299E-15 6.9173459773987E-14 1.05547527698451E-14 2.342613953206963E-14 -1.736390023980356E-15
q -9.054423092410299E-15 2.222468383966947E-14 -3.171398734221949E-13 -2.375732358836107E-14 -9.852093348596649E-14 4.640717218538535E-15
tp 6.9173459773987E-14 -3.171398734221949E-13 1.67387842291897E-9 -5.492765246290145E-12 5.269998127716172E-10 -6.835604433246228E-13
node 1.05547527698451E-14 -2.375732358836107E-14 -5.492765246290145E-12 2.545358116722892E-9 -2.537478114202502E-9 1.330628873340773E-10
peri 2.342613953206963E-14 -9.852093348596649E-14 5.269998127716172E-10 -2.537478114202502E-9 2.703769907034563E-9 -1.328516819702601E-10
i -1.736390023980356E-15 4.640717218538535E-15 -6.835604433246228E-13 1.330628873340773E-10 -1.328516819702601E-10 4.152649465038488E-11

[ 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 16.5   n/a MPO436582  

120502 (1993 QD9)          Discovered 1993-Aug-20 by Elst, E. W. at La Silla
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1993 QD9 = 2001 VS14 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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