Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08290932601757454 1.7368e-07  
a 5.171840609880226 2.149e-07 AU
q 4.743046790644735 9.9453e-07 AU
i 14.98300743000518 1.394e-05 deg
node 27.25573426379199 4.9864e-05 deg
peri 125.7176835639614 0.00011546 deg
M 13.01493196913563 9.2081e-05 deg
tp 2456645.187816147672
(2013-Dec-18.68781615)
0.001101 JED
period 4296.018321066285
11.76
0.00026776
7.331e-07
d
yr
n .08379852530764972 5.223e-09 deg/d
Q 5.600634429115718 2.3272e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      250  
   data-arc span      8414 days (23.04 yr)  
   first obs. used      1991-03-15  
   last obs. used      2014-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60893  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:42:16  

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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Apr-18 10:46 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin