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260235 Attwood (2004 RU289)
Classification: Main-belt Asteroid          SPK-ID: 2260235
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1611958762281945 6.7443e-08  
a 3.034030751301963 4.0013e-08 au
q 2.544957505842556 2.1026e-07 au
i 1.842109176435823 8.8203e-06 deg
node 34.52613223954803 0.00027945 deg
peri 311.9836033695336 0.00028213 deg
M 98.64464091778339 3.4542e-05 deg
tp 2457071.568551215000
0.00018395 JED
period 1930.315927869859
n .1864979689605872 3.6893e-09 deg/d
Q 3.52310399676137 4.6463e-08 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      5930 days (16.24 yr)  
   first obs. used      1999-11-12  
   last obs. used      2016-02-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57076  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-26 11:39:34  

Additional Information
 Earth MOID = 1.53758 au 
 Jupiter MOID = 1.88225 au 
 T_jup = 3.221 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3 mag n/a MPO352607  

260235 Attwood           Discovered 2004 Sept. 12 at the Jarnac Observatory.
Randy Attwood (b. 1957) is a Canadian editor who has served as national President of the Royal Astronomical Society of Canada, editor of Space Quarterly and SpaceRef Interactive. He founded the Mississauga Astronomical Society, and created and hosted the cable television show "Astronomy Toronto".
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20120703/MPCPages.arcLast Updated: 2012-07-09

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2016-Apr-29 12:07 UT
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