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(2018 TK4)
Classification: Mars-crossing Asteroid          SPK-ID: 3831720
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5490842864661645 2.4075e-05  
a 2.896587817556683 0.0001719 au
q 1.306116962566987 8.0597e-06 au
i 28.06841188186585 0.0006041 deg
node 217.6427845033789 0.00028672 deg
peri 192.9867567409494 0.00017412 deg
M 149.0313699433432 0.013256 deg
tp 2458455.075488409704
(2018-Dec-02.57548841)
0.00014798 TDB
period 1800.646563703504
4.93
0.16029
0.0004389
d
yr
n .1999281853844572 1.7797e-05 deg/d
Q 4.487058672546379 0.00026628 au
  Orbit Determination Parameters
   # obs. used (total)      50  
   data-arc span      74 days  
   first obs. used      2018-09-24  
   last obs. used      2018-12-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .55837  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 16:39:07  

Additional Information
 Earth MOID = .321712 au 
 Jupiter MOID = .982549 au 
 T_jup = 2.897 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.4   .35811 E2021G71 autocmod 2.6q

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