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117328 (2004 WH9)
Classification: Main-belt Asteroid          SPK-ID: 2117328
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 .2448825763175723 3.8976e-08  
a 3.052980757764807 3.0841e-08 au
q 2.305358964355387 1.1616e-07 au
i 10.81017019459033 4.8281e-06 deg
node 47.33178260912987 3.7099e-05 deg
peri 20.17405126415796 4.0596e-05 deg
M 332.3573726147342 1.6165e-05 deg
tp 2459150.110249191260
(2020-Oct-27.61024919)
8.8456e-05 TDB
period 1948.428742253421
5.33
2.9524e-05
8.083e-08
d
yr
n .1847642627072152 2.7997e-09 deg/d
Q 3.800602551174228 3.8393e-08 au
  Orbit Determination Parameters
   # obs. used (total)      497  
   data-arc span      6812 days (18.65 yr)  
   first obs. used      1998-09-22  
   last obs. used      2017-05-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6175  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 04:36:04  

Additional Information
 Earth MOID = 1.32218 au 
 Jupiter MOID = 1.58308 au 
 T_jup = 3.163 
[ 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 14.7   n/a MPO493669  
diameter diameter 3.867 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.130   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

117328 (2004 WH9)          Discovered 2004-Nov-21 by CINEOS at Campo Imperatore
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2004 WH9 = 1998 SY164 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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