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13209 Arnhem (1997 GQ41)
Classification: Main-belt Asteroid          SPK-ID: 2013209
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 .1253385495534273 5.875e-08  
a 2.322684237450176 1.5607e-08 AU
q 2.031562364057562 1.3758e-07 AU
i 2.550365083981963 6.0459e-06 deg
node 88.53034889935797 0.00016048 deg
peri 36.06165171365394 0.00016335 deg
M 66.36537096150973 2.9173e-05 deg
tp 2456762.145853537733
0.00010432 JED
period 1292.955821435583
n .278431787097171 2.8063e-09 deg/d
Q 2.613806110842789 1.7563e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      793  
   data-arc span      9264 days (25.36 yr)  
   first obs. used      1988-11-06  
   last obs. used      2014-03-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51626  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 13:51:28  

Additional Information
 Earth MOID = 1.0479 AU 
 T_jup = 3.565 
[ 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 14.5 mag n/a MPO244304  

13209 Arnhem           Discovered 1997 Apr. 9 by E. W. Elst at the European Southern Observatory.
Arnhem, a name derived from the presence of eagles, is a city near the Rhine river in the eastern part of the Netherlands. It is famous for archaeological evidence of human activity there in the Stone Age, some 70~000 years ago.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06

Alternate Designations
 1997 GQ41 = 1993 BO13 = 1998 QN19 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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