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243508 (2009 WM71)
Classification: Main-belt Asteroid          SPK-ID: 2243508
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1176608876567187 6.0134e-08  
a 2.158566174361176 1.3269e-08 au
q 1.904587362220072 1.3258e-07 au
i 4.808428118441437 4.2022e-06 deg
node 76.64476817790975 7.3322e-05 deg
peri 249.2472911622799 7.5413e-05 deg
M 197.2482684480181 1.8469e-05 deg
tp 2459524.184349114276
(2021-Nov-05.68434911)
6.0823e-05 TDB
period 1158.367802808446
3.17
1.0681e-05
2.924e-08
d
yr
n .310782118708052 2.8656e-09 deg/d
Q 2.412544986502279 1.483e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      5369 days (14.70 yr)  
   first obs. used      2005-05-22  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56547  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:21:41  

Additional Information
 Earth MOID = .8989 au 
 Jupiter MOID = 2.85582 au 
 T_jup = 3.685 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.4   n/a MPO454787  
diameter diameter 1.675 km 0.344 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.069   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243508 (2009 WM71)          Discovered 2009-Nov-18 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2009 WM71 = 2005 MB55 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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