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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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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .210157795839624 9.6023e-08  
a 3.176225623739291 8.6562e-08 au
q 2.508717047564907 3.35e-07 au
i 25.94961134039728 1.4914e-05 deg
node 292.2407247884288 2.3901e-05 deg
peri 315.6866316098279 4.8573e-05 deg
M 74.17014800634084 4.83e-05 deg
tp 2458970.517175040081
(2020-May-01.01717504)
0.00027151 TDB
period 2067.594862726449
5.66
8.4523e-05
2.314e-07
d
yr
n .174115348461102 7.1178e-09 deg/d
Q 3.843734199913675 1.0475e-07 au
  Orbit Determination Parameters
   # obs. used (total)      113  
   data-arc span      4937 days (13.52 yr)  
   first obs. used      2006-12-21  
   last obs. used      2020-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .61802  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 14:42:05  

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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