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266737 (2009 SQ21)
Classification: Main-belt Asteroid          SPK-ID: 2266737
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1064255536958846 5.2341e-08  
a 2.29186554846745 2.3822e-08 au
q 2.047952488475279 1.136e-07 au
i 6.39454789687679 5.6997e-06 deg
node 294.7724708796731 5.3434e-05 deg
peri 333.8628800519608 6.6726e-05 deg
M 113.3101227360304 3.4283e-05 deg
tp 2458601.614416338080
(2019-Apr-28.11441634)
0.00012246 TDB
period 1267.307868448983
3.47
1.9759e-05
5.41e-08
d
yr
n .2840667283480157 4.429e-09 deg/d
Q 2.535778608459621 2.6358e-08 au
  Orbit Determination Parameters
   # obs. used (total)      224  
   data-arc span      4689 days (12.84 yr)  
   first obs. used      2006-11-25  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50909  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 04:06:14  

Additional Information
 Earth MOID = 1.03392 au 
 Jupiter MOID = 2.55565 au 
 T_jup = 3.582 
[ 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 17.1   n/a MPO433731  

266737 (2009 SQ21)          Discovered 2009-Sep-22 by Bickel, W. at Bergisch Gladbach
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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