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47050 (1998 WN20)
Classification: Main-belt Asteroid          SPK-ID: 2047050
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1563729241376871 6.371e-08  
a 2.911601511061226 1.4614e-08 au
q 2.456305868852874 1.8476e-07 au
i 4.572537490971094 4.3074e-06 deg
node 214.4236018622862 5.0141e-05 deg
peri 336.405064251903 5.1526e-05 deg
M 356.7447244073186 1.1464e-05 deg
tp 2459016.908980247294
(2020-Jun-16.40898025)
5.7767e-05 TDB
period 1814.664448781771
4.97
1.3663e-05
3.741e-08
d
yr
n .1983837839781767 1.4936e-09 deg/d
Q 3.366897153269579 1.69e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1920  
   data-arc span      7928 days (21.71 yr)  
   first obs. used      1998-10-18  
   last obs. used      2020-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46026  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:44:09  

Additional Information
 Earth MOID = 1.45711 au 
 Jupiter MOID = 1.60217 au 
 T_jup = 3.260 
[ 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 13.2   n/a MPO385116  
diameter diameter 12.512 km 0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.071   0.002 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

47050 (1998 WN20)          Discovered 1998-Nov-18 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WN20 = 2000 AG164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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