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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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0863563916790861 4.8381e-08  
a 3.063168577174246 2.6744e-08 au
q 2.798644391744717 1.6265e-07 au
i 4.447831860861409 6.4779e-06 deg
node 339.6670674289554 5.3777e-05 deg
peri 108.7883999741267 6.6115e-05 deg
M 294.8621232507009 3.7773e-05 deg
tp 2459554.812008239470
(2021-Dec-06.31200824)
0.000206 TDB
period 1958.189755817939
5.36
2.5644e-05
7.021e-08
d
yr
n .1838432659196644 2.4076e-09 deg/d
Q 3.327692762603774 2.9053e-08 au
  Orbit Determination Parameters
   # obs. used (total)      394  
   data-arc span      7734 days (21.17 yr)  
   first obs. used      1999-10-02  
   last obs. used      2020-12-04  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55197  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:48:29  

Additional Information
 Earth MOID = 1.81892 au 
 Jupiter MOID = 1.83117 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 15.72   n/a E2021B55  

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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