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39797 (1997 TK18)
Classification: Jupiter Trojan          SPK-ID: 2039797
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0826331014809264 1.1505e-07  
a 5.170784555882033 1.6923e-07 AU
q 4.743506590939826 6.2848e-07 AU
i 14.98438095049189 1.2149e-05 deg
node 27.25252381855373 3.6953e-05 deg
peri 125.8512244703375 9.6333e-05 deg
M 29.67755099909906 7.9799e-05 deg
tp 2456646.454849098345
(2013-Dec-19.95484910)
0.00095462 JED
period 4294.702562501371
11.76
0.00021084
5.772e-07
d
yr
n .08382419847728048 4.1152e-09 deg/d
Q 5.598062520824239 1.8322e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      304  
   data-arc span      8781 days (24.04 yr)  
   first obs. used      1991-03-15  
   last obs. used      2015-03-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56809  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 17:53:27  

Additional Information
 Earth MOID = 3.77816 AU 
 T_jup = 2.926 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.2 mag n/a MPO259612  

39797 (1997 TK18)          Discovered 1997-Oct-03 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 TK18 = 1999 XB208 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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