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19393 Davidthompson (1998 DT33)
Classification: Main-belt Asteroid          SPK-ID: 2019393
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05714378730824895 5.9222e-08  
a 2.389843717392186 1.6574e-08 AU
q 2.253278996305572 1.3886e-07 AU
i 5.802518304705994 7.1455e-06 deg
node 157.2676465396614 5.3248e-05 deg
peri 341.4446449129127 7.8947e-05 deg
M 219.673792352445 6.0046e-05 deg
tp 2457526.503902991780
0.00022696 JED
period 1349.437202440781
n .2667778829195265 2.7752e-09 deg/d
Q 2.5264084384788 1.7521e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      597  
   data-arc span      8096 days (22.17 yr)  
   first obs. used      1992-09-25  
   last obs. used      2014-11-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57948  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:42:38  

Additional Information
 Earth MOID = 1.26726 AU 
 T_jup = 3.524 
[ 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 15.5 mag n/a MPO263521  

19393 Davidthompson           Discovered 1998 Feb. 27 by E. W. Elst at the European Southern Observatory.
David Thompson (1770-1857), a British-Canadian furtrader and surveyor, mapped 3.9 million square kilometers of North America. Navigating the full length of the Columbia River in 1811, he produced a high-quality map of the river basin. He has been called the greatest land geographer who ever lived.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100726/MPCPages.arcLast Updated: 2010-07-28

Alternate Designations
 1998 DT33 = 1992 SL5 = 1996 TY37 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2015-Mar-30 23:03 UT
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