+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20359 (1998 JR) Classification: Main-belt Asteroid          SPK-ID: 2020359 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1093536928490353 4.0283e-08   a 2.816637223442504 1.7229e-08 au q 2.508627541643013 1.1334e-07 au i 3.662178911337106 4.2782e-06 deg node 296.5439317263575 6.8739e-05 deg peri 15.56516813598867 7.1651e-05 deg M 160.0210678554124 2.0756e-05 deg tp 2458233.015767406398 (2018-Apr-24.51576741) 9.9977e-05 TDB period 1726.612173237986 4.73 1.5842e-05 4.337e-08 d yr n .2085007887584143 1.9131e-09 deg/d Q 3.124646905241995 1.9113e-08 au   Orbit Determination Parameters    # obs. used (total)      964      data-arc span      9832 days (26.92 yr)      first obs. used      1993-03-21      last obs. used      2020-02-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55895      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:03:17   Additional Information  Earth MOID = 1.49458 au   Jupiter MOID = 2.11198 au   T_jup = 3.307  [ 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 14.7   n/a MPO452458   diameter diameter 4.362 km 0.549 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.147   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20359 (1998 JR)          Discovered 1998-May-01 by JPL/GEODSS NEAT at Haleakala Reference: 20010109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 JR = 1993 FH26  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 21:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin