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19139 Apian (1989 GJ8)
Classification: Main-belt Asteroid          SPK-ID: 2019139
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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07726435709455848 6.1056e-08  
a 2.583839384407653 1.9512e-08 au
q 2.384200695535796 1.5617e-07 au
i 8.023819307393426 6.4796e-06 deg
node 48.22148479568503 4.2805e-05 deg
peri 336.809599172546 5.8935e-05 deg
M 9.98031909418884 4.4071e-05 deg
tp 2457558.442967738438
0.00018551 JED
period 1517.038831251193
n .2373044068378174 2.6881e-09 deg/d
Q 2.78347807327951 2.102e-08 au
  Orbit Determination Parameters
   # obs. used (total)      984  
   data-arc span      9715 days (26.60 yr)  
   first obs. used      1989-02-11  
   last obs. used      2015-09-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47569  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Oct-05 14:02:54  

Additional Information
 Earth MOID = 1.38972 au 
 Jupiter MOID = 2.57637 au 
 T_jup = 3.405 
[ 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 13.5 mag n/a MPO302182  

19139 Apian           Discovered 1989 Apr. 6 by F. Börngen at Tautenburg.
German mathematician and cartographer Peter Apian (1495-1552) made astronomical instruments. His major work, the Astronomicum Caesareum, is a sumptuous atlas of the skies, with revolving paper models for computations. He was the first European to illustrate that tails of comets always point away from the sun.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20021120/MPCPages.arcLast Updated: 2003-10-02

Alternate Designations
 1989 GJ8 = 1999 XP18 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2016-Apr-29 17:49 UT
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