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91691 (1999 TG129)
Classification: Main-belt Asteroid          SPK-ID: 2091691
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1157092972233111 6.6795e-08  
a 2.940035799390254 1.9127e-08 au
q 2.599846323231432 1.9868e-07 au
i 4.723415673657924 8.3556e-06 deg
node 352.9236057885644 4.3318e-05 deg
peri 30.17088085443228 5.0369e-05 deg
M 19.89138143964986 2.531e-05 deg
tp 2458898.760452992373
(2020-Feb-19.26045299)
0.00012929 TDB
period 1841.311878406695
5.04
1.7968e-05
4.919e-08
d
yr
n .1955127777221052 1.9079e-09 deg/d
Q 3.280225275549077 2.134e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      7447 days (20.39 yr)  
   first obs. used      1999-09-04  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 22:35:43  

Additional Information
 Earth MOID = 1.60416 au 
 Jupiter MOID = 2.19378 au 
 T_jup = 3.258 
[ 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 14.9   n/a MPO412707  

91691 (1999 TG129)          Discovered 1999-Oct-06 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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