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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.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2101577939260231 9.4453e-08  
a 3.176225625415181 8.5334e-08 au
q 2.508717054966624 3.2835e-07 au
i 25.94961184369993 1.4829e-05 deg
node 292.240724787951 2.3901e-05 deg
peri 315.6866314989953 4.8554e-05 deg
M 74.17014770937659 4.8248e-05 deg
tp 2458970.517176408496
(2020-May-01.01717641)
0.00027133 TDB
period 2067.594864362854
5.66
8.3324e-05
2.281e-07
d
yr
n .1741153483232978 7.0168e-09 deg/d
Q 3.843734195863739 1.0327e-07 au
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      5339 days (14.62 yr)  
   first obs. used      2006-12-21  
   last obs. used      2021-08-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60571  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:56:07  

Additional Information
 Earth MOID = 1.54607 au 
 Jupiter MOID = 1.54153 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 15.48   n/a MPCxxxxx  
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

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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