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74960 (1999 TR198)
Classification: Main-belt Asteroid          SPK-ID: 2074960
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 .2321192198307488 4.9403e-08  
a 2.771870307587608 1.6473e-08 au
q 2.128465934318354 1.3878e-07 au
i 13.754123608168 5.7959e-06 deg
node 29.01611980691745 1.8613e-05 deg
peri 298.4931726638296 2.0855e-05 deg
M 225.6695072226885 1.0578e-05 deg
tp 2459629.469945110152
(2022-Feb-18.96994511)
5.1325e-05 TDB
period 1685.612667371222
4.61
1.5026e-05
4.114e-08
d
yr
n .2135721966075598 1.9039e-09 deg/d
Q 3.415274680856861 2.0297e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1138  
   data-arc span      7511 days (20.56 yr)  
   first obs. used      1999-10-05  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50823  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:09:34  

Additional Information
 Earth MOID = 1.15753 au 
 Jupiter MOID = 2.13351 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 14.4   n/a MPO436308  

74960 (1999 TR198)          Discovered 1999-Oct-12 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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