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129911 (1999 TH99)
Classification: Main-belt Asteroid          SPK-ID: 2129911
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2619781644252316 4.7305e-08  
a 2.67556313226851 2.1175e-08 au
q 1.974624014072982 1.3255e-07 au
i 14.6455197459762 5.2721e-06 deg
node 162.4965101298451 1.823e-05 deg
peri 168.8176434886292 2.0782e-05 deg
M 283.7499520557996 1.2172e-05 deg
tp 2459339.078090765485
(2021-May-04.57809077)
5.7147e-05 TDB
period 1598.531620134481
4.38
1.8977e-05
5.196e-08
d
yr
n .2252066805971058 2.6736e-09 deg/d
Q 3.376502250464037 2.6723e-08 au
  Orbit Determination Parameters
   # obs. used (total)      450  
   data-arc span      8040 days (22.01 yr)  
   first obs. used      1998-04-23  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56289  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 21:48:01  

Additional Information
 Earth MOID = .966625 au 
 Jupiter MOID = 2.03577 au 
 T_jup = 3.284 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5   n/a MPO436629  

129911 (1999 TH99)          Discovered 1999-Oct-02 by LINEAR at Socorro
Reference: 20060711/Numbers.arcLast Updated: 2006-07-17
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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