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213322 (2001 SN121)
Classification: Main-belt Asteroid          SPK-ID: 2213322
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1438334509077173 5.6331e-08  
a 2.731745905207936 1.271e-08 au
q 2.338829464658852 1.5478e-07 au
i 4.015223741761677 3.859e-06 deg
node 284.422046943783 7.2971e-05 deg
peri 42.49119868367422 7.4534e-05 deg
M 118.0362443627726 1.4421e-05 deg
tp 2458659.780838399186
(2019-Jun-25.28083840)
6.6073e-05 TDB
period 1649.145135269031
4.52
1.151e-05
3.151e-08
d
yr
n .2182949167425897 1.5235e-09 deg/d
Q 3.124662345757019 1.4539e-08 au
  Orbit Determination Parameters
   # obs. used (total)      753  
   data-arc span      7120 days (19.49 yr)  
   first obs. used      2001-07-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51862  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:42:14  

Additional Information
 Earth MOID = 1.32704 au 
 Jupiter MOID = 2.1997 au 
 T_jup = 3.335 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457494.5 (2016-Apr-16.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1459764035598201 5.6311e-08  
q 2.331206548305826 1.5499e-07 au
tp 2457011.395579665039
(2014-Dec-19.89557966)
6.629e-05 TDB
node 284.5756399911972 7.3101e-05 deg
peri 42.30077733573548 7.4606e-05 deg
i 4.012590599859011 3.858e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      753  
   data-arc span      7120 days (19.49 yr)  
   first obs. used      2001-07-22  
   last obs. used      2021-01-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51862  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:42:14  

Additional Information
 Jupiter MOID = 2.1997 au 
 T_jup = 3.335 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.170892684713876E-15 -8.706327940965776E-15 7.919350578462686E-13 3.599467114586408E-14 -1.563104298110156E-14 -4.257778740371824E-15
q -8.706327940965776E-15 2.402258650659833E-14 -2.319112175386276E-12 -9.83774351103893E-14 1.649655586334168E-14 1.208460750099256E-14
tp 7.919350578462686E-13 -2.319112175386276E-12 4.394300355869962E-9 8.253348053608696E-12 9.974813886611835E-10 -3.011465998737938E-12
node 3.599467114586408E-14 -9.83774351103893E-14 8.253348053608696E-12 5.343780597778878E-9 -5.330198996282723E-9 2.872999903771864E-11
peri -1.563104298110156E-14 1.649655586334168E-14 9.974813886611835E-10 -5.330198996282723E-9 5.566100724889151E-9 -2.916949243062285E-11
i -4.257778740371824E-15 1.208460750099256E-14 -3.011465998737938E-12 2.872999903771864E-11 -2.916949243062285E-11 1.488410607665948E-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 15.41   n/a MPCxxxxx  

213322 (2001 SN121)          Discovered 2001-Sep-16 by LINEAR at Socorro
Reference: 20090509/Numbers.arcLast Updated: 2009-05-11

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