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181266 (2005 WU5)
Classification: Main-belt Asteroid          SPK-ID: 2181266
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1262948934428746 4.1313e-08  
a 3.105431203718048 3.4479e-08 au
q 2.713231100750299 1.368e-07 au
i 11.28058078681829 5.435e-06 deg
node 63.81500313075001 2.3408e-05 deg
peri 265.2986528989799 3.2035e-05 deg
M 350.5796188928894 2.4929e-05 deg
tp 2459252.805489126479
(2021-Feb-07.30548913)
0.00013888 TDB
period 1998.855022045692
5.47
3.3289e-05
9.114e-08
d
yr
n .1801031070435336 2.9994e-09 deg/d
Q 3.497631306685796 3.8833e-08 au
  Orbit Determination Parameters
   # obs. used (total)      485  
   data-arc span      7570 days (20.73 yr)  
   first obs. used      1999-10-08  
   last obs. used      2020-06-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55745  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:53  

Additional Information
 Earth MOID = 1.7305 au 
 Jupiter MOID = 1.90434 au 
 T_jup = 3.179 
[ 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 14.97   n/a E2021B55  
diameter diameter 3.943 km 0.150 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.137   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181266 (2005 WU5)          Discovered 2005-Nov-21 by LONEOS at Anderson Mesa
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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