Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

JPL Small-Body Database Browser
Search: [ help ]  
38461 Jiritrnka (1999 TR17)
Classification: Main-belt Asteroid          SPK-ID: 2038461
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
[ switch to new HTML5 viewer ]

Note: This Java-based orbit viewer will eventually be retired.

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 two-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 is not working, here are some notes that might help.
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04663435105066406 3.6713e-08  
a 3.172780881077407 2.1087e-08 au
q 3.024820303662408 1.1562e-07 au
i .2870644057049509 4.0783e-06 deg
node 252.3024364847073 0.00086269 deg
peri 189.8851457118732 0.00086403 deg
M 179.6783280099212 4.8224e-05 deg
tp 2457970.228364250219
0.00027394 TDB
period 2064.232191928242
n .1743989854473283 1.7386e-09 deg/d
Q 3.320741458492406 2.207e-08 au
  Orbit Determination Parameters
   # obs. used (total)      957  
   data-arc span      8558 days (23.43 yr)  
   first obs. used      1996-01-26  
   last obs. used      2019-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54125  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 04:52:26  

Additional Information
 Earth MOID = 2.04067 au 
 Jupiter MOID = 1.79471 au 
 T_jup = 3.200 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO436038  

38461 Jiřítrnka           Discovered 1999 Oct. 15 by P. Pravec at Ondřejov.
Jiří Trnka (1912-1969) is a Czech graphic artist, painter, maker of puppets, director of animated and puppet films, author and illustrator of books for children. He is co-founder of Czech animated film. One of his most famous films is Špalíček ("The Czech Year").
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030318/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
Alternate Designations
 1999 TR17 = 2001 AG6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Apr-07 11:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin