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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2445818189970989 3.8966e-08  
a 3.053629868262591 3.145e-08 au
q 2.306767520539055 1.1576e-07 au
i 10.81025094610862 4.8278e-06 deg
node 47.34040289390065 3.7091e-05 deg
peri 20.09397214467874 4.0617e-05 deg
M 258.4980090935265 1.5771e-05 deg
tp 2459150.034647326426
(2020-Oct-27.53464733)
8.861e-05 TDB
period 1949.050173999062
5.34
3.0111e-05
8.244e-08
d
yr
n .1847053527931258 2.8535e-09 deg/d
Q 3.800492215986127 3.9143e-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 = 1.32327 au 
 Jupiter MOID = 1.58231 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 14.8   n/a MPO309989  
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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