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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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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1065302008342518 6.2292e-08  
a 1.005089610274845 1.6424e-09 au
q .8980172122358462 6.202e-08 au
i 33.52834697940354 2.4097e-05 deg
node 91.45520507107622 2.4799e-06 deg
peri 256.5065120962255 6.0193e-06 deg
M 211.4617604653035 9.4943e-06 deg
tp 2458752.359293118638
(2019-Sep-25.85929312)
9.7645e-06 TDB
period 368.0489663400098
1.01
9.0211e-07
2.47e-09
d
yr
n .9781307188006771 2.3975e-09 deg/d
Q 1.112162008313844 1.8173e-09 au
  Orbit Determination Parameters
   # obs. used (total)      254  
   # delay obs. used      2  
   # Doppler obs. used      2  
   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      .32549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-07 06:14:44  

Additional Information
 Earth MOID = .0349795 au 
 Jupiter MOID = 4.09578 au 
 T_jup = 5.906 
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Orbital Elements at Epoch 2457481.5 (2016-Apr-03.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1069774812593049 6.2101e-08  
q .8976029194393772 6.1811e-08 au
tp 2457648.668141131456
(2016-Sep-17.16814113)
9.5007e-06 TDB
node 91.47974842450945 2.5034e-06 deg
peri 256.6663134091072 6.1574e-06 deg
i 33.52266748366821 2.4101e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      254  
   # delay obs. used      2  
   # Doppler obs. used      2  
   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      .32549  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-07 06:14:44  

Additional Information
 Jupiter MOID = 4.09578 au 
 T_jup = 5.906 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.85650186632844E-15 -3.837867284066052E-15 3.270446886133213E-13 -3.407943640319018E-14 -8.922676678807397E-14 7.076469116871999E-13
q -3.837867284066052E-15 3.820650058328499E-15 -3.293087271310023E-13 3.360486666597978E-14 8.548096541982588E-14 -6.984547816457373E-13
tp 3.270446886133213E-13 -3.293087271310023E-13 9.026410060180229E-11 1.368018572089546E-11 3.847650116679998E-11 1.378193872578005E-11
node -3.407943640319018E-14 3.360486666597978E-14 1.368018572089546E-11 6.266873105002701E-12 1.130311509880166E-11 -3.657936759414076E-11
peri -8.922676678807397E-14 8.548096541982588E-14 3.847650116679998E-11 1.130311509880166E-11 3.791346619548245E-11 -2.837302791084858E-11
i 7.076469116871999E-13 -6.984547816457373E-13 1.378193872578005E-11 -3.657936759414076E-11 -2.837302791084858E-11 5.808698297461228E-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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