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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08263318451814744 1.5462e-07  
a 5.170784480335681 1.9407e-07 AU
q 4.74350609226853 8.8372e-07 AU
i 14.98438058717058 1.2222e-05 deg
node 27.25252523047691 4.2654e-05 deg
peri 125.8512573990935 0.0001068 deg
M 29.67752559367251 8.55e-05 deg
tp 2456646.455159937222
(2013-Dec-19.95515994)
0.001026 JED
period 4294.702468381482
11.76
0.00024178
6.62e-07
d
yr
n .08382420031431677 4.719e-09 deg/d
Q 5.598062868402832 2.101e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      263  
   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      .58681  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 15:02:06  

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 (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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