+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1668714018493129 4.2502e-08   a 2.994038208794471 1.9312e-08 au q 2.494418855702532 1.2508e-07 au i 8.433133811594971 4.9905e-06 deg node 75.47198716659381 3.8184e-05 deg peri 15.64908327345487 4.2371e-05 deg M 246.4336595795459 1.7843e-05 deg tp 2459597.441214525708 (2022-Jan-17.94121453) 9.5441e-05 TDB period 1892.275796099792 5.18 1.8309e-05 5.013e-08 d yr n .1902471091909558 1.8407e-09 deg/d Q 3.493657561886411 2.2535e-08 au   Orbit Determination Parameters    # obs. used (total)      725      data-arc span      9019 days (24.69 yr)      first obs. used      1995-11-20      last obs. used      2020-07-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54176      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 09:02:58   Additional Information  Earth MOID = 1.51211 au   Jupiter MOID = 1.73713 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 14.6   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.arc Last 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 ] 2020-Oct-25 00:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin