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243368 (2008 WS89)
Classification: Main-belt Asteroid          SPK-ID: 2243368
[ 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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1897904586717529 4.5402e-08  
a 2.595881073334676 2.2607e-08 au
q 2.103207613769166 1.1777e-07 au
i 3.557208730469033 7.8312e-06 deg
node 237.5787688232566 9.7031e-05 deg
peri 235.5484299262917 9.9845e-05 deg
M 240.5574617520805 2.5998e-05 deg
tp 2459507.353136112545
(2021-Oct-19.85313611)		 0.00011399 TDB
period 1527.656157321277
4.18		 1.9956e-05
5.464e-08		 d
yr
n .2356551232256707 3.0784e-09 deg/d
Q 3.088554532900186 2.6897e-08 au
   Orbit Determination Parameters
   # obs. used (total)      257  
   data-arc span      8315 days (22.77 yr)  
   first obs. used      1995-08-31  
   last obs. used      2018-06-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61547  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 09:32:42  

Additional Information
 Earth MOID = 1.12217 au 
 Jupiter MOID = 2.0416 au 
 T_jup = 3.389 
[ 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 16.7   n/a MPO437136  
diameter diameter 2.453 km 0.443 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.067   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243368 (2008 WS89)          Discovered 2008-Nov-22 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2008 WS89 = 2004 XG168 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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