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118973 (2000 WD173)
Classification: Main-belt Asteroid          SPK-ID: 2118973
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .13286636133167 4.3978e-08  
a 3.187097884780984 2.4649e-08 au
q 2.763639785622273 1.3806e-07 au
i 15.8307525699989 5.2495e-06 deg
node 100.4820272498468 1.7176e-05 deg
peri 47.64538096579104 2.5662e-05 deg
M 164.6045052284303 1.8493e-05 deg
tp 2458250.265603493786
(2018-May-11.76560349)		 0.00010705 TDB
period 2078.220047911256
5.69		 2.411e-05
6.601e-08		 d
yr
n .1732251598486036 2.0096e-09 deg/d
Q 3.610555983939696 2.7924e-08 au
   Orbit Determination Parameters
   # obs. used (total)      917  
   data-arc span      7613 days (20.84 yr)  
   first obs. used      1999-11-07  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54938  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:59:44  

Additional Information
 Earth MOID = 1.80344 au 
 Jupiter MOID = 1.58977 au 
 T_jup = 3.125 
[ 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 14.15   n/a E2021B55  
diameter diameter 9.206 km 0.345 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.063   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

118973 (2000 WD173)          Discovered 2000-Nov-25 by LONEOS at Anderson Mesa
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

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