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91707 (1999 TH146)
Classification: Main-belt Asteroid          SPK-ID: 2091707
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04046830779175093 4.0243e-08  
a 2.984809580069292 2.3099e-08 au
q 2.864019387283281 1.2227e-07 au
i 2.001949085961505 4.2465e-06 deg
node 264.7542596832775 0.00013642 deg
peri 20.10758310228072 0.00014909 deg
M 85.57176954216766 5.9044e-05 deg
tp 2458552.785269157982
(2019-Mar-10.28526916)
0.00031034 TDB
period 1883.533599520835
5.16
2.1865e-05
5.986e-08
d
yr
n .1911301184601023 2.2187e-09 deg/d
Q 3.105599772855304 2.4034e-08 au
  Orbit Determination Parameters
   # obs. used (total)      739  
   data-arc span      7336 days (20.08 yr)  
   first obs. used      1999-10-01  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60401  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:57:25  

Additional Information
 Earth MOID = 1.84768 au 
 Jupiter MOID = 1.95438 au 
 T_jup = 3.256 
[ 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 15.0   n/a MPO432454  

91707 (1999 TH146)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ show close-approach data ]
Alternate Designations
 1999 TH146 = 2000 XH1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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