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266941 (2010 ST20)
Classification: Main-belt Asteroid          SPK-ID: 2266941
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03993262554228728 7.5422e-08  
a 2.878035702244304 3.2557e-08 au
q 2.763108180249249 2.2892e-07 au
i 1.272337353442296 7.3024e-06 deg
node 222.2048393178111 0.00032408 deg
peri 65.59215131911974 0.00034165 deg
M 351.0186945557662 0.00010508 deg
tp 2458644.991767416086
(2019-Jun-10.49176742)
0.00052035 TDB
period 1783.375074953499
4.88
3.0261e-05
8.285e-08
d
yr
n .2018644339354059 3.4253e-09 deg/d
Q 2.99296322423936 3.3857e-08 au
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      5140 days (14.07 yr)  
   first obs. used      2005-08-31  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57788  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 04:07:32  

Additional Information
 Earth MOID = 1.74641 au 
 Jupiter MOID = 2.06378 au 
 T_jup = 3.294 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457144.5 (2015-May-02.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04060880321450509 7.5157e-08  
q 2.760271903851806 2.2896e-07 au
tp 2456876.586470577027
(2014-Aug-07.08647058)
0.00052098 TDB
node 222.2246193905752 0.00032448 deg
peri 68.48718289077625 0.00034153 deg
i 1.270425985059943 7.3082e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      172  
   data-arc span      5140 days (14.07 yr)  
   first obs. used      2005-08-31  
   last obs. used      2019-09-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57788  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 04:07:32  

Additional Information
 Jupiter MOID = 2.06378 au 
 T_jup = 3.294 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.648536686452297E-15 -1.70662129830125E-14 4.753838788112211E-12 1.916556692968543E-14 6.674804959024994E-13 -1.640575516690041E-15
q -1.70662129830125E-14 5.242428185476896E-14 -1.943344682311101E-11 -4.892931537610569E-14 -3.043527817780294E-12 5.104352207476063E-15
tp 4.753838788112211E-12 -1.943344682311101E-11 2.714233072834727E-7 -5.143501140043565E-11 5.554094966060681E-8 -6.383528019052954E-12
node 1.916556692968543E-14 -4.892931537610569E-14 -5.143501140043565E-11 1.052868411804638E-7 -1.05271491545106E-7 -3.967402801105139E-10
peri 6.674804959024994E-13 -3.043527817780294E-12 5.554094966060681E-8 -1.05271491545106E-7 1.166420675170518E-7 3.954210937326521E-10
i -1.640575516690041E-15 5.104352207476063E-15 -6.383528019052954E-12 -3.967402801105139E-10 3.954210937326521E-10 5.341014901632374E-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 16.5   n/a MPO450147  

266941 (2010 ST20)          Discovered 2005-Aug-31 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

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