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233944 (2009 WL45)
Classification: Main-belt Asteroid          SPK-ID: 2233944
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04903163636545321 5.4422e-08  
a 2.729169435264314 2.3119e-08 au
q 2.595353791934725 1.4665e-07 au
i 5.280820133765113 5.8501e-06 deg
node 216.2796998340619 6.0894e-05 deg
peri 180.1211138340022 8.3454e-05 deg
M 142.9334219631607 5.8069e-05 deg
tp 2458346.654008405041
(2018-Aug-16.15400840)
0.00026386 TDB
period 1646.812577081184
4.51
2.0926e-05
5.729e-08
d
yr
n .2186041113664951 2.7777e-09 deg/d
Q 2.862985078593903 2.4253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      8920 days (24.42 yr)  
   first obs. used      1995-08-28  
   last obs. used      2020-01-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53557  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 07:25:49  

Additional Information
 Earth MOID = 1.60189 au 
 Jupiter MOID = 2.35707 au 
 T_jup = 3.347 
[ 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 16.2   n/a MPO418249  
diameter diameter 3.551 km 0.519 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.039   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

233944 (2009 WL45)          Discovered 2009-Nov-18 by Spacewatch at Kitt Peak
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

Alternate Designations
 2009 WL45 = 1995 UL81 = 2004 SY45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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