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216946 (1999 TN236)
Classification: Main-belt Asteroid          SPK-ID: 2216946
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2569046372449516 5.1189e-08  
a 2.272348331422985 1.2042e-08 au
q 1.688571507644592 1.1959e-07 au
i 3.922130440851498 5.3927e-06 deg
node 103.1690005000347 7.5837e-05 deg
peri 257.8728991760541 7.6748e-05 deg
M 139.246020482611 1.0971e-05 deg
tp 2458912.560493778678
(2020-Mar-04.06049378)
3.6153e-05 TDB
period 1251.154048322928
3.43
9.9451e-06
2.723e-08
d
yr
n .2877343525224182 2.2871e-09 deg/d
Q 2.856125155201378 1.5135e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      7800 days (21.36 yr)  
   first obs. used      1999-10-03  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:54  

Additional Information
 Earth MOID = .690139 au 
 Jupiter MOID = 2.60527 au 
 T_jup = 3.564 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457664.5 (2016-Oct-03.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2580132096252887 5.1166e-08  
q 1.685520822164159 1.1959e-07 au
tp 2457661.976983511884
(2016-Sep-30.47698351)
3.225e-05 TDB
node 103.1989004298388 7.5918e-05 deg
peri 257.8844700311016 7.6815e-05 deg
i 3.921210760025446 5.3904e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      7800 days (21.36 yr)  
   first obs. used      1999-10-03  
   last obs. used      2021-02-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61833  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:54  

Additional Information
 Jupiter MOID = 2.60527 au 
 T_jup = 3.564 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.617995677781792E-15 -6.103624652906758E-15 -2.821011426307689E-13 1.911029104996393E-14 -8.996513169681218E-14 -1.277065213187991E-14
q -6.103624652906758E-15 1.430063033698629E-14 7.037990138777013E-13 -4.122956177259424E-14 2.190330133243449E-13 3.023353532453779E-14
tp -2.821011426307689E-13 7.037990138777013E-13 1.040091533086106E-9 -5.84866295019273E-13 3.926492261802194E-10 1.922025013856703E-12
node 1.911029104996393E-14 -4.122956177259424E-14 -5.84866295019273E-13 5.763617313857313E-9 -5.750582918151697E-9 8.689711158777261E-11
peri -8.996513169681218E-14 2.190330133243449E-13 3.926492261802194E-10 -5.750582918151697E-9 5.900607078781593E-9 -8.61030411549473E-11
i -1.277065213187991E-14 3.023353532453779E-14 1.922025013856703E-12 8.689711158777261E-11 -8.61030411549473E-11 2.905622347254344E-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 17.68   n/a MPCxxxxx  

216946 (1999 TN236)          Discovered 1999-Oct-03 by CSS at Catalina
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09

[ show close-approach data ]
Alternate Designations
 1999 TN236 = 2004 CW119 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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