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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04886060126899477 5.6705e-08  
a 2.730065117323814 2.4598e-08 au
q 2.596672494187863 1.5546e-07 au
i 5.28059463377943 6.3734e-06 deg
node 216.2898277509748 6.2158e-05 deg
peri 180.4859269253373 8.5762e-05 deg
M 55.14946069749107 5.9264e-05 deg
tp 2458348.095725856932
(2018-Aug-17.59572586)
0.00027084 TDB
period 1647.623341049976
4.51
2.2268e-05
6.097e-08
d
yr
n .2184965404596562 2.953e-09 deg/d
Q 2.863457740459764 2.58e-08 au
  Orbit Determination Parameters
   # obs. used (total)      261  
   data-arc span      8551 days (23.41 yr)  
   first obs. used      1995-08-28  
   last obs. used      2019-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55403  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:43:08  

Additional Information
 Earth MOID = 1.60264 au 
 Jupiter MOID = 2.35676 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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