+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16937 (1998 FR117) Classification: Main-belt Asteroid          SPK-ID: 2016937 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06644651783774029 1.8317e-08   a 3.008061248741472 1.4994e-08 au q 2.808186053319957 5.7609e-08 au i 9.006924368853623 3.7922e-07 deg node 236.8563739560788 4.8148e-06 deg peri 218.8614918464045 1.7765e-05 deg M 234.0103284743888 1.9662e-05 deg tp 2459867.400252934023 (2022-Oct-14.90025293) 0.00010594 TDB period 1905.585498787844 5.22 1.4248e-05 3.901e-08 d yr n .1889183142026419 1.4125e-09 deg/d Q 3.207936444162987 1.599e-08 au   Orbit Determination Parameters    # obs. used (total)      2394      data-arc span      24492 days (67.06 yr)      first obs. used      1953-11-30      last obs. used      2020-12-20      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44678      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:47:19   Additional Information  Earth MOID = 1.83083 au   Jupiter MOID = 2.01861 au   T_jup = 3.228  [ 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 12.62   n/a E2021B10   diameter diameter 9.683 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.157   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16937 (1998 FR117)          Discovered 1998-Mar-31 by LINEAR at Socorro Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 FR117 = 1982 GJ = 1990 VU7 = 1996 BB4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 09:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin