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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08263320756506209 1.488e-07  
a 5.170784458333163 1.9004e-07 AU
q 4.743505952913521 8.4662e-07 AU
i 14.98438033814457 1.2217e-05 deg
node 27.25253332354825 4.2097e-05 deg
peri 125.8512591018077 0.00010525 deg
M 29.67751864464476 8.4656e-05 deg
tp 2456646.455245097017
(2013-Dec-19.95524510)
0.0010154 JED
period 4294.702440969509
11.76
0.00023676
6.482e-07
d
yr
n .08382420084934492 4.6211e-09 deg/d
Q 5.598062963752803 2.0574e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      275  
   data-arc span      8749 days (23.95 yr)  
   first obs. used      1991-03-15  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57917  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 16:02:23  

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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