+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101770 (1999 FL56) Classification: Main-belt Asteroid          SPK-ID: 2101770 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .10942007202221 4.1744e-08   a 3.1976415567132 2.8684e-08 au q 2.84775538727643 1.3941e-07 au i 5.529275781284935 4.8254e-06 deg node 69.29436171475709 4.7696e-05 deg peri 78.33481019946498 5.3456e-05 deg M 309.537356187203 2.4387e-05 deg tp 2459493.259229384298 (2021-Oct-05.75922938) 0.00014294 TDB period 2088.541436103276 5.72 2.8103e-05 7.694e-08 d yr n .1723690963353233 2.3193e-09 deg/d Q 3.54752772614997 3.1823e-08 au   Orbit Determination Parameters    # obs. used (total)      705      data-arc span      8052 days (22.05 yr)      first obs. used      1999-02-23      last obs. used      2021-03-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56142      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:38:30   Additional Information  Earth MOID = 1.86606 au   Jupiter MOID = 1.48629 au   T_jup = 3.178  [ 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 MPO453471   diameter diameter 5.524 km 0.355 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.092   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101770 (1999 FL56)          Discovered 1999-Mar-20 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 FL56 = 2003 XF39  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-20 03:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin