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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0829093331666379 1.5535e-07  
a 5.171840552287085 1.9723e-07 AU
q 4.743046700852786 8.9093e-07 AU
i 14.98297153785633 1.2278e-05 deg
node 27.25571019232061 4.3097e-05 deg
peri 125.717745638906 0.00010693 deg
M 13.01489217784826 8.5686e-05 deg
tp 2456645.188293586699
(2013-Dec-18.68829359)
0.0010252 JED
period 4296.018249306188
11.76
0.00024574
6.728e-07
d
yr
n .08379852670740874 4.7934e-09 deg/d
Q 5.600634403721384 2.1358e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      259  
   data-arc span      8492 days (23.25 yr)  
   first obs. used      1991-03-15  
   last obs. used      2014-06-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .59044  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:20:03  

Additional Information
 Earth MOID = 3.7774 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 (327)
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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