+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101764 (1999 FK49) Classification: Outer Main-belt Asteroid          SPK-ID: 2101764 [ 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 .1130327959202444 4.5529e-08   a 3.227941306398167 3.1769e-08 au q 2.863078075469536 1.4463e-07 au i 11.33383604836062 6.7099e-06 deg node 11.89607455071889 2.3281e-05 deg peri 245.308134032416 3.6235e-05 deg M 163.9980491198045 2.7958e-05 deg tp 2458035.509468746782 (2017-Oct-09.00946875) 0.00016266 TDB period 2118.297096311048 5.80 3.1272e-05 8.562e-08 d yr n .1699478324484934 2.5089e-09 deg/d Q 3.592804537326798 3.5359e-08 au   Orbit Determination Parameters    # obs. used (total)      615      data-arc span      7876 days (21.56 yr)      first obs. used      1999-03-20      last obs. used      2020-10-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60671      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:58:37   Additional Information  Earth MOID = 1.87278 au   Jupiter MOID = 1.54761 au   T_jup = 3.147  [ 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 14.6   n/a MPO502728   diameter diameter 5.430 km 1.553 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.114   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101764 (1999 FK49)          Discovered 1999-Mar-20 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 FK49 = 2001 RC120  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 16:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin