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100387 (1995 WJ4)
Classification: Main-belt Asteroid          SPK-ID: 2100387
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1672412271664943 3.7208e-08  
a 2.991861526684112 1.6285e-08 au
q 2.491498933449239 1.1322e-07 au
i 8.432945386379199 4.1258e-06 deg
node 75.4509120863386 3.781e-05 deg
peri 15.93244155426785 4.1501e-05 deg
M 321.5923444383857 1.7892e-05 deg
tp 2459598.162876642268
(2022-Jan-18.66287664)
9.4645e-05 TDB
period 1890.212628957588
5.18
1.5433e-05
4.225e-08
d
yr
n .1904547639164448 1.555e-09 deg/d
Q 3.492224119918983 1.9008e-08 au
  Orbit Determination Parameters
   # obs. used (total)      804  
   data-arc span      9138 days (25.02 yr)  
   first obs. used      1995-11-20  
   last obs. used      2020-11-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53386  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:31:57  

Additional Information
 Earth MOID = 1.5093 au 
 Jupiter MOID = 1.73849 au 
 T_jup = 3.218 
[ 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 14.55   n/a E2021B55  
diameter diameter 6.036 km 0.262 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.092   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

100387 (1995 WJ4)          Discovered 1995-Nov-20 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1995 WJ4 = 2000 UH24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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