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181211 (2005 SQ190)
Classification: Main-belt Asteroid          SPK-ID: 2181211
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1229028075819994 5.3293e-08  
a 2.904435979008364 1.7732e-08 au
q 2.547472642746063 1.5227e-07 au
i 2.321976785706209 4.1943e-06 deg
node 126.6985615874086 0.00018105 deg
peri 201.7032628492584 0.00018323 deg
M 66.29716506585031 2.9448e-05 deg
tp 2458867.546491210045
(2020-Jan-19.04649121)
0.00014719 TDB
period 1807.969662734879
4.95
1.6557e-05
4.533e-08
d
yr
n .1991183853469285 1.8235e-09 deg/d
Q 3.261399315270665 1.9911e-08 au
  Orbit Determination Parameters
   # obs. used (total)      449  
   data-arc span      9266 days (25.37 yr)  
   first obs. used      1995-10-01  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56955  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:41  

Additional Information
 Earth MOID = 1.53434 au 
 Jupiter MOID = 2.05927 au 
 T_jup = 3.273 
[ 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 15.63   n/a E2021B55  

181211 (2005 SQ190)          Discovered 2005-Sep-29 by LONEOS at Anderson Mesa
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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