+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103136 (1999 XF203) Classification: Main-belt Asteroid          SPK-ID: 2103136 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .315095030044997 6.5269e-08   a 2.756492232840589 1.3122e-08 au q 1.887935229914883 1.8325e-07 au i 9.151934833464194 7.0833e-06 deg node 36.8386009090254 2.0784e-05 deg peri 359.8721511424914 2.1683e-05 deg M 243.3197987407995 5.4091e-06 deg tp 2459742.286594810739 (2022-Jun-11.78659481) 2.7404e-05 TDB period 1671.604711227618 4.58 1.1936e-05 3.268e-08 d yr n .2153619199455461 1.5378e-09 deg/d Q 3.625049235766296 1.7256e-08 au   Orbit Determination Parameters    # obs. used (total)      857      data-arc span      7561 days (20.70 yr)      first obs. used      1999-10-09      last obs. used      2020-06-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49342      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:50:30   Additional Information  Earth MOID = .894164 au   Jupiter MOID = 1.81476 au   T_jup = 3.252  [ 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 14.89   n/a E2021B55   diameter diameter 6.098 km 0.278 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.063   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   103136 (1999 XF203)          Discovered 1999-Dec-12 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 XF203 = 2001 FW76  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 02:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin