+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118420 (1999 TF59) Classification: Main-belt Asteroid          SPK-ID: 2118420 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1824879633938748 5.7708e-08   a 3.17458595202137 2.4457e-08 au q 2.595262227018186 1.8843e-07 au i 1.162584277608706 6.5072e-06 deg node 3.855927314948138 0.0002553 deg peri 1.73987138159775 0.00025574 deg M 230.2333547060651 1.7519e-05 deg tp 2459745.214206526957 (2022-Jun-14.71420653) 0.00010634 TDB period 2065.994029069926 5.66 2.3875e-05 6.537e-08 d yr n .1742502615857345 2.0137e-09 deg/d Q 3.753909677024555 2.892e-08 au   Orbit Determination Parameters    # obs. used (total)      492      data-arc span      7554 days (20.68 yr)      first obs. used      1999-08-22      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58014      source      ORB      producer      Otto Matic      solution date      2020-May-20 20:20:27   Additional Information  Earth MOID = 1.59362 au   Jupiter MOID = 1.70852 au   T_jup = 3.175  [ 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 MPO432687   diameter diameter 5.678 km 0.319 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.042   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   118420 (1999 TF59)          Discovered 1999-Oct-07 by Spacewatch at Kitt Peak Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ show close-approach data ] Alternate Designations  1999 TF59 = 1999 RQ256  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-25 08:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin