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441818 (2009 MW8)
Classification: Main-belt Asteroid          SPK-ID: 2441818
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2091896526428064 1.0091e-07  
a 3.176176472841175 9.2124e-08 au
q 2.511753219755275 3.4731e-07 au
i 25.96443315453841 1.5371e-05 deg
node 292.2609577372415 2.5514e-05 deg
peri 315.9579812102623 5.3896e-05 deg
M 5.074219332155482 5.7298e-05 deg
tp 2458971.357815838744
(2020-May-01.85781584)
0.0003285 TDB
period 2067.54687003166
5.66
8.9952e-05
2.463e-07
d
yr
n .1741193900936754 7.5754e-09 deg/d
Q 3.840599725927074 1.1139e-07 au
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      4429 days (12.13 yr)  
   first obs. used      2006-12-21  
   last obs. used      2019-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66002  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:19:51  

Additional Information
 Earth MOID = 1.54847 au 
 Jupiter MOID = 1.54325 au 
 T_jup = 3.012 
[ 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 15.4   n/a MPO472458  
diameter diameter 5.012 km 0.951 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

441818 (2009 MW8)          Discovered 2009-Jun-28 by OAM at La Sagra
Reference: Last Updated: 2015-09-02

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