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186012 (2001 QE121)
Classification: Main-belt Asteroid          SPK-ID: 2186012
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1499380890843283 3.4384e-08  
a 2.403227126993261 7.0728e-09 au
q 2.042891843936272 8.1846e-08 au
i 3.605784704880555 3.355e-06 deg
node 82.6761935781868 7.851e-05 deg
peri 238.78442211 8.0205e-05 deg
M 66.51439507981976 1.66e-05 deg
tp 2458949.077698167295
(2020-Apr-09.57769817)
6.2449e-05 TDB
period 1360.788571423614
3.73
6.0073e-06
1.645e-08
d
yr
n .2645524863744111 1.1679e-09 deg/d
Q 2.763562410050251 8.1332e-09 au
  Orbit Determination Parameters
   # obs. used (total)      548  
   data-arc span      10094 days (27.64 yr)  
   first obs. used      1993-05-24  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56263  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:49:31  

Additional Information
 Earth MOID = 1.03096 au 
 Jupiter MOID = 2.52969 au 
 T_jup = 3.506 
[ 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 16.81   n/a MPCxxxxx  

186012 (2001 QE121)          Discovered 2001-Aug-19 by LINEAR at Socorro
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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