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181601 (2006 WA39)
Classification: Main-belt Asteroid          SPK-ID: 2181601
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05767982591935338 4.6954e-08  
a 2.757060021839678 2.2173e-08 au
q 2.598033279730756 1.3059e-07 au
i 2.190217616810016 5.4687e-06 deg
node 128.4985714961165 0.00013155 deg
peri 164.1469773625929 0.00013925 deg
M 154.7188341551723 4.5452e-05 deg
tp 2458481.864873137081
(2018-Dec-29.36487314)
0.00021085 TDB
period 1672.121219651798
4.58
2.0172e-05
5.523e-08
d
yr
n .2152953959133216 2.5972e-09 deg/d
Q 2.916086763948599 2.3452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      8861 days (24.26 yr)  
   first obs. used      1996-09-11  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .58628  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:31:16  

Additional Information
 Earth MOID = 1.58 au 
 Jupiter MOID = 2.17783 au 
 T_jup = 3.340 
[ 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 16.80   n/a MPCxxxxx  
diameter diameter 3.093 km 0.457 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.029   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

181601 (2006 WA39)          Discovered 2006-Nov-16 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2006 WA39 = 1996 RS14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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