+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17986 (1999 JF62) Classification: Main-belt Asteroid          SPK-ID: 2017986 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04626236492276383 1.3109e-08   a 2.520649769809573 8.7958e-09 au q 2.404038550316161 3.1182e-08 au i 14.82016697226866 9.3772e-07 deg node 68.82113197856052 1.4385e-06 deg peri 241.123682506648 2.5433e-05 deg M 79.50172508436862 2.4082e-05 deg tp 2458877.694267031339 (2020-Jan-29.19426703) 9.7695e-05 TDB period 1461.730091333158 4.00 7.6511e-06 2.095e-08 d yr n .2462834979826303 1.2891e-09 deg/d Q 2.637260989302984 9.2027e-09 au   Orbit Determination Parameters    # obs. used (total)      2310      data-arc span      10887 days (29.81 yr)      first obs. used      1991-05-17      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44454      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:19:07   Additional Information  Earth MOID = 1.41535 au   Jupiter MOID = 2.47185 au   T_jup = 3.409  [ 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 13.69   n/a E2021B10   diameter diameter 5.470 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.258   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17986 (1999 JF62)          Discovered 1999-May-10 by LINEAR at Socorro Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 JF62 = 1991 KL2 = 1998 HQ48  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 00:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin