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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08263318476969908 1.5461e-07  
a 5.170784479812562 1.9402e-07 AU
q 4.743506090487918 8.8358e-07 AU
i 14.98438063542945 1.222e-05 deg
node 27.25252541142062 4.2645e-05 deg
peri 125.8512571662707 0.0001068 deg
M 29.67752570127614 8.5497e-05 deg
tp 2456646.455158707267
(2013-Dec-19.95515871)
0.0010259 JED
period 4294.70246772975
11.76
0.00024172
6.618e-07
d
yr
n .08382420032703729 4.7179e-09 deg/d
Q 5.598062869137205 2.1005e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      267  
   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      .58271  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 15:22:47  

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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