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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 77 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1064507703590477 5.3963e-08  
a 1.005460019747564 4.3039e-10 au
q .8984280260802125 5.4229e-08 au
i 33.52735568234848 1.3055e-05 deg
node 91.44813633476858 1.1444e-06 deg
peri 256.6124614652408 3.2307e-06 deg
M 78.07298540037655 9.2952e-06 deg
tp 2459120.637312249173
(2020-Sep-28.13731225)
9.4832e-06 TDB
period 368.2524427989777
1.01
2.3645e-07
6.474e-10
d
yr
n .9775902564657729 6.2769e-10 deg/d
Q 1.112492013414915 4.7621e-10 au
  Orbit Determination Parameters
   # obs. used (total)      305  
   # delay obs. used      3  
   # Doppler obs. used      3  
   data-arc span      4436 days (12.15 yr)  
   first obs. used      2008-11-24  
   last obs. used      2021-01-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .37975  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 13:21:12  

Additional Information
 Earth MOID = .0348616 au 
 Jupiter MOID = 4.09537 au 
 T_jup = 5.904 
[ 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 20.55   n/a MPCxxxxx  
rotation period rot_per 2.4055 h n/a LCDB (Rev. 2020-October); 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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