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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1671599785344174 3.7205e-08  
a 2.992252676410407 1.6489e-08 au
q 2.492067783252091 1.1313e-07 au
i 8.432696640242641 4.1256e-06 deg
node 75.45484750639183 3.7809e-05 deg
peri 15.86381419166348 4.15e-05 deg
M 284.3157485585417 1.7763e-05 deg
tp 2459597.964954781454
(2022-Jan-18.46495478)
9.4664e-05 TDB
period 1890.583324748891
5.18
1.5627e-05
4.278e-08
d
yr
n .1904174205322665 1.5739e-09 deg/d
Q 3.492437569568724 1.9245e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53383  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:25:07  

Additional Information
 Earth MOID = 1.50952 au 
 Jupiter MOID = 1.73797 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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