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226787 (2004 RQ166)
Classification: Main-belt Asteroid          SPK-ID: 2226787
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1648236837432243 6.6248e-08  
a 2.74528279520922 2.302e-08 au
q 2.292795171985941 1.7318e-07 au
i 9.789308290941875 9.272e-06 deg
node 177.0052682842197 3.2893e-05 deg
peri 244.1432310254965 4.3799e-05 deg
M 104.233893301419 2.701e-05 deg
tp 2458519.455206759035
(2019-Feb-04.95520676)
0.00012405 TDB
period 1661.418566281165
4.55
2.0897e-05
5.721e-08
d
yr
n .2166823022844903 2.7254e-09 deg/d
Q 3.197770418432499 2.6815e-08 au
  Orbit Determination Parameters
   # obs. used (total)      158  
   data-arc span      8996 days (24.63 yr)  
   first obs. used      1995-09-02  
   last obs. used      2020-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57214  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 10:29:59  

Additional Information
 Earth MOID = 1.32439 au 
 Jupiter MOID = 2.22971 au 
 T_jup = 3.307 
[ 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 16.6   n/a MPO470426  

226787 (2004 RQ166)          Discovered 2004-Sep-07 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

Alternate Designations
 2004 RQ166 = 1995 SK38 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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