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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457328.5 (2015-Nov-02.0) TDB
Reference: JPL 56 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069920322514851 6.2624e-08  
q .8977320243530008 6.2365e-08 au
tp 2457280.665112184255
(2015-Sep-15.16511218)
9.5887e-06 TDB
node 91.48397963904426 2.5428e-06 deg
peri 256.7460621745171 6.2365e-06 deg
i 33.52221441675946 2.4623e-05 deg
  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
 Jupiter MOID = 4.09578 au 
 T_jup = 5.906 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.921763111216304E-15 -3.904809499026093E-15 3.026074611673856E-13 -3.285454926166596E-14 -9.733819674154285E-14 7.173699153037357E-13
q -3.904809499026093E-15 3.889333241906972E-15 -3.05924459946339E-13 3.265026717623781E-14 9.344522175769641E-14 -7.10968407032598E-13
tp 3.026074611673856E-13 -3.05924459946339E-13 9.194278836193245E-11 1.42487339319552E-11 4.125081118530159E-11 4.928050331108208E-12
node -3.285454926166596E-14 3.265026717623781E-14 1.42487339319552E-11 6.465582276136258E-12 1.121977633293769E-11 -3.831282879063338E-11
peri -9.733819674154285E-14 9.344522175769641E-14 4.125081118530159E-11 1.121977633293769E-11 3.889359810727226E-11 -2.900996096425224E-11
i 7.173699153037357E-13 -7.10968407032598E-13 4.928050331108208E-12 -3.831282879063338E-11 -2.900996096425224E-11 6.063074690972908E-10

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

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