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249911 (2001 SN166)
Classification: Main-belt Asteroid          SPK-ID: 2249911
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .279837532327734 3.7957e-08  
a 2.764309193134021 1.5813e-08 au
q 1.990751729936527 1.0809e-07 au
i 8.347253757214862 4.9634e-06 deg
node 177.938305927197 2.9351e-05 deg
peri 256.9856812920261 3.0985e-05 deg
M 337.4623137287575 9.1456e-06 deg
tp 2459105.595756902982
(2020-Sep-13.09575690)
4.3148e-05 TDB
period 1678.720345546257
4.60
1.4404e-05
3.944e-08
d
yr
n .2144490599372915 1.8401e-09 deg/d
Q 3.537866656331515 2.0238e-08 au
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      7006 days (19.18 yr)  
   first obs. used      2001-09-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52806  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:12:33  

Additional Information
 Earth MOID = 1.02497 au 
 Jupiter MOID = 1.85568 au 
 T_jup = 3.267 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457286.5 (2015-Sep-21.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2759529302540921 3.7602e-08  
q 2.004306518580262 1.0676e-07 au
tp 2457421.832683292328
(2016-Feb-03.33268329)
3.8947e-05 TDB
node 178.1203420207584 2.9217e-05 deg
peri 256.4315010754594 3.0979e-05 deg
i 8.356350650626736 4.9714e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      429  
   data-arc span      7006 days (19.18 yr)  
   first obs. used      2001-09-11  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52806  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:12:33  

Additional Information
 Jupiter MOID = 1.85568 au 
 T_jup = 3.267 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.413931004671915E-15 -3.991883452924455E-15 -2.411866785534826E-13 1.748295189884879E-14 -3.37865209390516E-14 -5.069975118672567E-15
q -3.991883452924455E-15 1.139834652892185E-14 7.744653313606211E-13 -5.04795982685448E-14 1.111326011476933E-13 1.479824421309792E-14
tp -2.411866785534826E-13 7.744653313606211E-13 1.516866269374344E-9 -1.333021958112664E-11 4.141904346339274E-10 4.286619859187617E-12
node 1.748295189884879E-14 -5.04795982685448E-14 -1.333021958112664E-11 8.536245266661252E-10 -8.469783617789016E-10 1.362859063495547E-11
peri -3.37865209390516E-14 1.111326011476933E-13 4.141904346339274E-10 -8.469783617789016E-10 9.597189488829711E-10 -1.258986662887833E-11
i -5.069975118672567E-15 1.479824421309792E-14 4.286619859187617E-12 1.362859063495547E-11 -1.258986662887833E-11 2.4714688615092E-11

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 16.0   n/a MPO454853  

249911 (2001 SN166)          Discovered 2001-Sep-19 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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