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49685 (1999 TT145)
Classification: Main-belt Asteroid          SPK-ID: 2049685
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1040553153164987 4.4353e-08  
a 2.214282582553114 9.551e-09 au
q 1.983874710225719 9.8922e-08 au
i 5.324019416586601 4.9518e-06 deg
node 21.25363708776502 5.0311e-05 deg
peri 249.0905843997835 5.4894e-05 deg
M 187.065576367383 2.1708e-05 deg
tp 2459578.631912463828
(2021-Dec-30.13191246)
7.2989e-05 TDB
period 1203.505260058146
3.30
7.7867e-06
2.132e-08
d
yr
n .2991262372900697 1.9354e-09 deg/d
Q 2.44469045488051 1.0545e-08 au
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      7981 days (21.85 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59465  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:31:22  

Additional Information
 Earth MOID = .975525 au 
 Jupiter MOID = 2.62914 au 
 T_jup = 3.642 
[ 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 16.2   n/a MPO502487  

49685 (1999 TT145)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TT145 = 1998 FX120 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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