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122311 (2000 QL9)
Classification: Main-belt Asteroid          SPK-ID: 2122311
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1611356414410338 5.271e-08  
a 2.602130153998436 1.1886e-08 au
q 2.182834242520842 1.3707e-07 au
i 7.456325917581158 5.125e-06 deg
node 342.7163129877507 3.4989e-05 deg
peri 11.1053983437697 3.7444e-05 deg
M 250.9184269472079 1.5741e-05 deg
tp 2459465.058960725048
(2021-Sep-07.55896073)
6.8431e-05 TDB
period 1533.175780111621
4.20
1.0504e-05
2.876e-08
d
yr
n .2348067355810895 1.6088e-09 deg/d
Q 3.02142606547603 1.3801e-08 au
  Orbit Determination Parameters
   # obs. used (total)      782  
   data-arc span      7243 days (19.83 yr)  
   first obs. used      2000-08-24  
   last obs. used      2020-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53157  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:43:31  

Additional Information
 Earth MOID = 1.17803 au 
 Jupiter MOID = 2.41207 au 
 T_jup = 3.384 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO469268  

122311 (2000 QL9)          Discovered 2000-Aug-25 by Kusnirak, P., Pravec, P. at Ondrejov
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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