+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103192 (1999 XF243) Classification: Main-belt Asteroid          SPK-ID: 2103192 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1359770454187893 5.2175e-08   a 2.416825263762287 1.2021e-08 au q 2.088192505102406 1.2517e-07 au i 8.024049249816837 4.9318e-06 deg node 324.8940406978612 3.6317e-05 deg peri 74.00785076153596 3.9877e-05 deg M 231.4001721385343 1.885e-05 deg tp 2459690.734861511384 (2022-Apr-21.23486151) 7.383e-05 TDB period 1372.354481953244 3.76 1.0239e-05 2.803e-08 d yr n .2623228945101846 1.9571e-09 deg/d Q 2.745458022422169 1.3655e-08 au   Orbit Determination Parameters    # obs. used (total)      693      data-arc span      9979 days (27.32 yr)      first obs. used      1993-01-29      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54762      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:50:13   Additional Information  Earth MOID = 1.11075 au   Jupiter MOID = 2.68576 au   T_jup = 3.490  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.6   n/a MPO417523   diameter diameter 2.312 km 0.255 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.208   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   103192 (1999 XF243)          Discovered 1999-Dec-05 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-09 02:18 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin