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385211 (1999 TG212)
Classification: Main-belt Asteroid          SPK-ID: 2385211
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2645863195901513 9.5234e-08  
a 2.740506028064845 2.5448e-08 au
q 2.015405624284544 2.7102e-07 au
i 3.4332312781793 1.4535e-05 deg
node 341.225177756886 0.00012726 deg
peri 69.52218271018451 0.00013843 deg
M 268.6954881082593 4.0489e-05 deg
tp 2459816.775726676056
(2022-Aug-25.27572668)
0.00019036 TDB
period 1657.084173263802
4.54
2.3082e-05
6.32e-08
d
yr
n .2172490726834606 3.0261e-09 deg/d
Q 3.465606431845146 3.2182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      7081 days (19.39 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-02-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59211  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:32  

Additional Information
 Earth MOID = 1.02859 au 
 Jupiter MOID = 1.95072 au 
 T_jup = 3.296 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457190.5 (2015-Jun-17.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2657153073345724 9.3153e-08  
q 2.01025074716252 2.6268e-07 au
tp 2456508.609844721623
(2013-Aug-04.10984472)
0.00016839 TDB
node 341.2625016599704 0.00012737 deg
peri 69.8926411331372 0.00013852 deg
i 3.433491193486906 1.4535e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      119  
   data-arc span      7081 days (19.39 yr)  
   first obs. used      1999-10-10  
   last obs. used      2019-02-28  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59211  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:04:32  

Additional Information
 Jupiter MOID = 1.95072 au 
 T_jup = 3.296 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.677431240123557E-15 -2.44258799498947E-14 -9.825717799389036E-12 2.201005407124841E-13 -2.930792534322382E-12 -1.931410011752621E-14
q -2.44258799498947E-14 6.899956654461778E-14 2.786056436833788E-11 -6.201980531389253E-13 8.350831358968994E-12 5.604957404184117E-14
tp -9.825717799389036E-12 2.786056436833788E-11 2.835520888842965E-8 -6.039399885451438E-10 9.20495423003519E-9 1.936700109405612E-11
node 2.201005407124841E-13 -6.201980531389253E-13 -6.039399885451438E-10 1.622410186337342E-8 -1.637544113193083E-8 9.901448122009731E-10
peri -2.930792534322382E-12 8.350831358968994E-12 9.20495423003519E-9 -1.637544113193083E-8 1.918865614099005E-8 -9.829329825044124E-10
i -1.931410011752621E-14 5.604957404184117E-14 1.936700109405612E-11 9.901448122009731E-10 -9.829329825044124E-10 2.112770720861263E-10

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 17.3   n/a MPO427920  

385211 (1999 TG212)          Discovered 1999-Oct-15 by LINEAR at Socorro
Reference: Last Updated: 2014-02-19

[ show close-approach data ]
Alternate Designations
 1999 TG212 = 2008 SF159 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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