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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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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 64 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1064624434809375 5.4476e-08  
a 1.005386557337203 4.7254e-10 au
q .8983506478001969 5.4704e-08 au
i 33.52701774112487 1.3784e-05 deg
node 91.45011555137557 1.1842e-06 deg
peri 256.6044245614077 3.4064e-06 deg
M 242.5469802585549 9.5071e-06 deg
tp 2459120.632281300759
(2020-Sep-28.13228130)
9.7725e-06 TDB
period 368.2120848274167
1.01
2.5959e-07
7.107e-10
d
yr
n .9776974054741693 6.8929e-10 deg/d
Q 1.11242246687421 5.2285e-10 au
  Orbit Determination Parameters
   # obs. used (total)      256  
   # delay obs. used      3  
   # Doppler obs. used      3  
   data-arc span      4059 days (11.11 yr)  
   first obs. used      2008-11-24  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .33362  
   source      ORB  
   producer      Giorgini  
   solution date      2020-Mar-24 12:12:12  

Additional Information
 Earth MOID = .0350651 au 
 Jupiter MOID = 4.09637 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 20.6   n/a MPO434525  
rotation period rot_per 2.4055 h n/a LCDB (Rev. 2019-August); 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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