+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100803 (1998 FP98) Classification: Main-belt Asteroid          SPK-ID: 2100803 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2430495354040968 4.7937e-08   a 2.754948538669432 1.8963e-08 au q 2.085359576283631 1.3813e-07 au i 6.687776312047959 4.6212e-06 deg node 253.467293368557 4.0209e-05 deg peri 289.5772104296472 4.1548e-05 deg M 303.9793930001536 1.3678e-05 deg tp 2459260.404603883861 (2021-Feb-14.90460388) 6.5325e-05 TDB period 1670.200706651511 4.57 1.7244e-05 4.721e-08 d yr n .2155429575417575 2.2254e-09 deg/d Q 3.424537501055233 2.3572e-08 au   Orbit Determination Parameters    # obs. used (total)      645      data-arc span      8010 days (21.93 yr)      first obs. used      1998-02-25      last obs. used      2020-01-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5625      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 01:11:32   Additional Information  Earth MOID = 1.09888 au   Jupiter MOID = 1.62401 au   T_jup = 3.291  [ 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 15.2   n/a MPO273082   diameter diameter 4.306 km 1.107 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   geometric albedo albedo 0.079   0.049 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   100803 (1998 FP98)          Discovered 1998-Mar-31 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 FP98 = 2001 XY154  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-27 10:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin