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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1891471354484142 6.1212e-08  
a 2.448383384718619 1.1438e-08 au
q 1.9852786810196 1.4979e-07 au
i 4.666275804921407 6.6043e-06 deg
node 357.902703325543 5.0859e-05 deg
peri 22.26207221400566 5.2457e-05 deg
M 329.4766414312462 1.0214e-05 deg
tp 2459119.144437059875
(2020-Sep-26.64443706)
3.9574e-05 TDB
period 1399.321678358111
3.83
9.8056e-06
2.685e-08
d
yr
n .2572675072270765 1.8028e-09 deg/d
Q 2.911488088417639 1.3601e-08 au
  Orbit Determination Parameters
   # obs. used (total)      501  
   data-arc span      10854 days (29.72 yr)  
   first obs. used      1991-02-08  
   last obs. used      2020-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:56:47  

Additional Information
 Earth MOID = .988469 au 
 Jupiter MOID = 2.55777 au 
 T_jup = 3.468 
[ 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 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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