+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1094140095365005 4.2346e-08   a 3.196794990929719 3.0056e-08 au q 2.847020833305898 1.4015e-07 au i 5.529902152216458 4.8871e-06 deg node 69.2941998907675 4.9358e-05 deg peri 78.47443067363029 5.5122e-05 deg M 274.924005100428 2.5091e-05 deg tp 2459493.872730560434 (2021-Oct-06.37273056) 0.00014839 TDB period 2087.712088602913 5.72 2.9443e-05 8.061e-08 d yr n .1724375702786251 2.4319e-09 deg/d Q 3.54656914855354 3.3345e-08 au   Orbit Determination Parameters    # obs. used (total)      647      data-arc span      7642 days (20.92 yr)      first obs. used      1999-02-23      last obs. used      2020-01-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57101      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 01:26:15   Additional Information  Earth MOID = 1.86545 au   Jupiter MOID = 1.48774 au   T_jup = 3.179  [ 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 ] 2020-Nov-28 10:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin