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249342 (2008 WM23)
Classification: Main-belt Asteroid          SPK-ID: 2249342
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .005528481901503973 5.8821e-08  
a 3.108094663532008 4.0349e-08 au
q 3.090911618436511 1.7843e-07 au
i 12.84311670572127 7.3556e-06 deg
node 47.85275821248536 2.7288e-05 deg
peri 204.115680929608 0.00069702 deg
M 192.4176393373975 0.00069905 deg
tp 2459932.177455084910
(2022-Dec-18.67745508)
0.0038896 TDB
period 2001.427134123288
5.48
3.8973e-05
1.067e-07
d
yr
n .1798716495155821 3.5026e-09 deg/d
Q 3.125277708627506 4.0572e-08 au
  Orbit Determination Parameters
   # obs. used (total)      257  
   data-arc span      8041 days (22.02 yr)  
   first obs. used      1997-11-28  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66005  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:44:51  

Additional Information
 Earth MOID = 2.08077 au 
 Jupiter MOID = 1.85303 au 
 T_jup = 3.181 
[ 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 15.2   n/a MPO503176  
diameter diameter 4.063 km 0.535 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.098   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249342 (2008 WM23)          Discovered 2008-Nov-18 by CSS at Catalina
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27

[ show close-approach data ]
Alternate Designations
 2008 WM23 = 1997 WO26 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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