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243366 (2008 WH74)
Classification: Main-belt Asteroid          SPK-ID: 2243366
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .288648095577562 6.9534e-08  
a 3.075543526001241 3.2601e-08 au
q 2.187793744355083 2.2702e-07 au
i 19.2321232587662 7.8301e-06 deg
node 89.20635667736028 1.9974e-05 deg
peri 115.1227518866313 2.5632e-05 deg
M 335.1792211684315 1.6324e-05 deg
tp 2459136.329514181274
(2020-Oct-13.82951418)
9.0635e-05 TDB
period 1970.068120629098
5.39
3.1325e-05
8.576e-08
d
yr
n .1827347979647739 2.9055e-09 deg/d
Q 3.9632933076474 4.2012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      271  
   data-arc span      7683 days (21.03 yr)  
   first obs. used      1999-04-10  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63378  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 12:48:07  

Additional Information
 Earth MOID = 1.25494 au 
 Jupiter MOID = 1.45993 au 
 T_jup = 3.082 
[ 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 15.7   n/a MPO503159  
diameter diameter 1.812 km 0.522 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.282   0.143 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243366 (2008 WH74)          Discovered 2008-Nov-19 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Alternate Designations
 2008 WH74 = 1999 JM133 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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