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129884 (1999 TB4)
Classification: Main-belt Asteroid          SPK-ID: 2129884
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08618528484570316 4.8437e-08  
a 3.063860801441981 2.6966e-08 au
q 2.79980108554212 1.6276e-07 au
i 4.44738773171395 6.5186e-06 deg
node 339.6660668416783 5.4166e-05 deg
peri 108.6303846421241 6.6485e-05 deg
M 258.238927254873 3.7858e-05 deg
tp 2459554.208446189131
(2021-Dec-05.70844619)
0.00020679 TDB
period 1958.853569943649
5.36
2.5861e-05
7.08e-08
d
yr
n .1837809653175639 2.4263e-09 deg/d
Q 3.327920517341843 2.9291e-08 au
  Orbit Determination Parameters
   # obs. used (total)      389  
   data-arc span      7700 days (21.08 yr)  
   first obs. used      1999-10-02  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54746  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 16:45:35  

Additional Information
 Earth MOID = 1.82036 au 
 Jupiter MOID = 1.83173 au 
 T_jup = 3.223 
[ 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 15.6   n/a MPO449743  

129884 (1999 TB4)          Discovered 1999-Oct-02 by Sarounova, L. at Ondrejov
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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