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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 75 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1064624372542123 5.3965e-08  
a 1.005386557161549 4.5695e-10 au
q .8983506539035095 5.4201e-08 au
i 33.52701588638723 1.3055e-05 deg
node 91.45011508975904 1.1433e-06 deg
peri 256.6044235214675 3.2415e-06 deg
M 242.5469827723551 9.2322e-06 deg
tp 2459120.632278698133
(2020-Sep-28.13227870)
9.4876e-06 TDB
period 368.2120847309196
1.01
2.5103e-07
6.873e-10
d
yr
n .9776974057303938 6.6655e-10 deg/d
Q 1.112422460419589 5.056e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .37975  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-21 05:19:59  

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. 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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