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129937 (1999 TH156)
Classification: Main-belt Asteroid          SPK-ID: 2129937
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1634198721596007 5.468e-08  
a 2.561962983000127 1.2089e-08 au
q 2.143287319840617 1.4579e-07 au
i 5.847958964727773 5.2024e-06 deg
node 167.7498526281683 3.3547e-05 deg
peri 208.422423871434 3.6379e-05 deg
M 26.43394362940463 1.5822e-05 deg
tp 2458890.519127340496
(2020-Feb-11.01912734)
6.5368e-05 TDB
period 1497.813368769496
4.10
1.0601e-05
2.902e-08
d
yr
n .2403503717527585 1.7012e-09 deg/d
Q 2.980638646159638 1.4064e-08 au
  Orbit Determination Parameters
   # obs. used (total)      733  
   data-arc span      7365 days (20.16 yr)  
   first obs. used      1999-10-07  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52632  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 10:36:49  

Additional Information
 Earth MOID = 1.14626 au 
 Jupiter MOID = 2.48413 au 
 T_jup = 3.408 
[ show covariance matrix ]

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 15.7   n/a MPO432777  

129937 (1999 TH156)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17

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