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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .00582518681786674 6.0034e-08  
a 3.106933752748588 4.1802e-08 au
q 3.088835283208092 1.8302e-07 au
i 12.84566335255528 7.5055e-06 deg
node 47.85345538681052 3.0896e-05 deg
peri 201.3223809302669 0.00069139 deg
M 123.2581292092478 0.00069201 deg
tp 2457915.627879259251
(2017-Jun-11.12787926)
0.0038441 TDB
period 2000.305903135281
5.48
4.0369e-05
1.105e-07
d
yr
n .1799724729281335 3.6321e-09 deg/d
Q 3.125032222289084 4.2045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      245  
   data-arc span      8035 days (22.00 yr)  
   first obs. used      1997-11-28  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66825  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 18:47:45  

Additional Information
 Earth MOID = 2.07848 au 
 Jupiter MOID = 1.85366 au 
 T_jup = 3.182 
[ 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 15.1   n/a MPO413152  
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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