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JPL Small-Body Database Browser
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418849 (2008 WM64)
Classification: Apollo [NEO, PHA]          SPK-ID: 2418849
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1065302110225036 6.2812e-08  
a 1.005089610663374 1.7361e-09 au
q .8980172023428789 6.2499e-08 au
i 33.52834982675012 2.462e-05 deg
node 91.4552047877508 2.5153e-06 deg
peri 256.5065109763791 6.0689e-06 deg
M 211.4617601543283 9.5945e-06 deg
tp 2458752.359293524621
(2019-Sep-25.85929352)
9.8807e-06 TDB
period 368.04896655342
1.01
9.5362e-07
2.611e-09
d
yr
n .978130718233516 2.5343e-09 deg/d
Q 1.112162018983869 1.9211e-09 au
  Orbit Determination Parameters
   # obs. used (total)      229  
   # delay obs. used      2  
   # Doppler obs. used      2  
   data-arc span      3698 days (10.12 yr)  
   first obs. used      2008-11-24  
   last obs. used      2019-01-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .32775  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jan-18 08:00:53  

Additional Information
 Earth MOID = .0349795 au 
 Jupiter MOID = 4.09578 au 
 T_jup = 5.906 
[ 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 20.6   n/a MPO434525  
rotation period rot_per 2.4055 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Rowe, B. (2018) Minor Planet Bull. 45, 292-294.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 138-147.]

418849 (2008 WM64)          Discovered 2008-Nov-24 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-01-07

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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