+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100775 (1998 FL42) Classification: Main-belt Asteroid          SPK-ID: 2100775 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1942864816730671 4.2399e-08   a 3.122248495010024 1.9991e-08 au q 2.515637820005497 1.3552e-07 au i 7.951626995392213 5.144e-06 deg node 194.5321301607866 3.1692e-05 deg peri 29.98006960609726 3.4698e-05 deg M 18.15381399619093 1.1386e-05 deg tp 2459098.883319241036 (2020-Sep-06.38331924) 6.3784e-05 TDB period 2015.114018514385 5.52 1.9354e-05 5.299e-08 d yr n .1786499407440007 1.7158e-09 deg/d Q 3.72885917001455 2.3875e-08 au   Orbit Determination Parameters    # obs. used (total)      666      data-arc span      8128 days (22.25 yr)      first obs. used      1998-02-26      last obs. used      2020-05-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52748      source      ORB      producer      Otto Matic      solution date      2020-Jun-24 01:13:27   Additional Information  Earth MOID = 1.50983 au   Jupiter MOID = 1.25924 au   T_jup = 3.172  [ 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 14.87   n/a E2021B55   diameter diameter 4.610 km 0.309 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.110   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100775 (1998 FL42)          Discovered 1998-Mar-20 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 FL42 = 2003 BY13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-09 04:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin