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243506 (2009 WS)
Classification: Main-belt Asteroid          SPK-ID: 2243506
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1285088537244346 1.0185e-07  
a 3.072094104912528 3.5392e-08 au
q 2.677302812956626 3.2892e-07 au
i 1.748780389691745 9.7461e-06 deg
node 154.1234037498494 0.00021192 deg
peri 218.7174566154137 0.00021398 deg
M 3.65424788119034 3.1718e-05 deg
tp 2458980.536085448967
(2020-May-11.03608545)
0.00017316 TDB
period 1966.754711787871
5.38
3.3987e-05
9.305e-08
d
yr
n .1830426528749705 3.1631e-09 deg/d
Q 3.46688539686843 3.9941e-08 au
  Orbit Determination Parameters
   # obs. used (total)      177  
   data-arc span      7614 days (20.85 yr)  
   first obs. used      1998-09-25  
   last obs. used      2019-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58817  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:21:41  

Additional Information
 Earth MOID = 1.6779 au 
 Jupiter MOID = 1.99622 au 
 T_jup = 3.217 
[ 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 16.1   n/a MPO475966  
diameter diameter 3.456 km 0.620 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.049   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243506 (2009 WS)          Discovered 2009-Nov-16 by Molnar, L. A. at Calvin-Rehoboth
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2009 WS = 2006 DW193 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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