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JPL Small-Body Database Browser
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441850 (2009 WJ23)
Classification: Main-belt Asteroid          SPK-ID: 2441850
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1706396288936232 6.0732e-08  
a 2.249507985032212 2.007e-08 au
q 1.865652777273073 1.4003e-07 au
i 3.926046429636536 6.7611e-06 deg
node 17.91928750271694 0.00012007 deg
peri 37.84337753952937 0.00012344 deg
M 296.3984440086685 2.4161e-05 deg
tp 2458818.218320475428
(2019-Nov-30.71832048)
8.2321e-05 TDB
period 1232.33770227
3.37
1.6492e-05
4.515e-08
d
yr
n .2921277173755782 3.9096e-09 deg/d
Q 2.633363192791351 2.3495e-08 au
  Orbit Determination Parameters
   # obs. used (total)      104  
   data-arc span      4648 days (12.73 yr)  
   first obs. used      2007-02-08  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51912  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:59:20  

Additional Information
 Earth MOID = .878528 au 
 Jupiter MOID = 2.71442 au 
 T_jup = 3.606 
[ 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 17.8   n/a MPO419202  
diameter diameter 1.530 km 0.279 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.057   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

441850 (2009 WJ23)          Discovered 2009-Nov-18 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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