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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1668713923573217 4.7354e-08  
a 2.994038205122468 2.1768e-08 au
q 2.494418881062666 1.3631e-07 au
i 8.433133855816362 5.3434e-06 deg
node 75.47201459984318 3.8635e-05 deg
peri 15.6490610879879 4.3298e-05 deg
M 246.4336543042634 1.805e-05 deg
tp 2459597.441241156122
(2022-Jan-17.94124116)
9.6225e-05 TDB
period 1892.275792618653
5.18
2.0637e-05
5.65e-08
d
yr
n .1902471095409453 2.0748e-09 deg/d
Q 3.493657529182271 2.5401e-08 au
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      8269 days (22.64 yr)  
   first obs. used      1995-11-20  
   last obs. used      2018-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53961  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 03:56:57  

Additional Information
 Earth MOID = 1.51211 au 
 Jupiter MOID = 1.73713 au 
 T_jup = 3.218 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456280.5 (2012-Dec-19.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1645732198680846 4.7102e-08  
q 2.502842543062276 1.3526e-07 au
tp 2455794.422274259516
(2011-Aug-20.92227426)
9.6308e-05 TDB
node 75.5835346827012 3.8618e-05 deg
peri 13.43504844003308 4.3626e-05 deg
i 8.435619626052866 5.3486e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      712  
   data-arc span      8269 days (22.64 yr)  
   first obs. used      1995-11-20  
   last obs. used      2018-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53961  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 03:56:57  

Additional Information
 Jupiter MOID = 1.73713 au 
 T_jup = 3.218 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.218639186965719E-15 -6.325096990060444E-15 -7.12501321595596E-13 2.44240249296498E-14 -1.898875198258402E-13 -1.729278339680892E-15
q -6.325096990060444E-15 1.829391684211993E-14 2.009485373702673E-12 -6.686033749835019E-14 5.478721155349175E-13 4.917138494275495E-15
tp -7.12501321595596E-13 2.009485373702673E-12 9.275320515627285E-9 2.440803023211728E-13 1.996546785073178E-9 -1.281849728015463E-13
node 2.44240249296498E-14 -6.686033749835019E-14 2.440803023211728E-13 1.491378129702764E-9 -1.47431621078771E-9 -3.257764544507256E-11
peri -1.898875198258402E-13 5.478721155349175E-13 1.996546785073178E-9 -1.47431621078771E-9 1.903204110463043E-9 3.216525381358292E-11
i -1.729278339680892E-15 4.917138494275495E-15 -1.281849728015463E-13 -3.257764544507256E-11 3.216525381358292E-11 2.860802161941899E-11

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 14.6   n/a MPO264055  
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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