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74917 (1999 TT143)
Classification: Main-belt Asteroid          SPK-ID: 2074917
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585197849239499 3.574e-08  
a 2.356037194811228 1.0004e-08 au
q 1.982558685416926 8.5849e-08 au
i 5.460112282910744 4.4649e-06 deg
node 237.3328666194561 3.7869e-05 deg
peri 28.7773523498972 4.029e-05 deg
M 342.4503502403579 1.2378e-05 deg
tp 2459064.892842008194
(2020-Aug-03.39284201)
4.5375e-05 TDB
period 1320.905171353267
3.62
8.4131e-06
2.303e-08
d
yr
n .2725403820102998 1.7359e-09 deg/d
Q 2.72951570420553 1.159e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      8111 days (22.21 yr)  
   first obs. used      1998-04-01  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52171  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 23:51:27  

Additional Information
 Earth MOID = .968865 au 
 Jupiter MOID = 2.34702 au 
 T_jup = 3.531 
[ 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 16.0   n/a MPO432302  

74917 (1999 TT143)          Discovered 1999-Oct-07 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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