+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103133 (1999 XX199) Classification: Main-belt Asteroid          SPK-ID: 2103133 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06960817569604894 5.2766e-08   a 2.738495572080344 2.1927e-08 au q 2.547873891156123 1.4535e-07 au i 5.750850295998508 6.8315e-06 deg node 30.04906944760869 4.9885e-05 deg peri 25.32053656062927 6.6906e-05 deg M 256.5111004340479 4.6648e-05 deg tp 2459676.336507913926 (2022-Apr-06.83650791) 0.0002166 TDB period 1655.261033477754 4.53 1.9881e-05 5.443e-08 d yr n .2174883554430257 2.6122e-09 deg/d Q 2.929117253004565 2.3454e-08 au   Orbit Determination Parameters    # obs. used (total)      506      data-arc span      7107 days (19.46 yr)      first obs. used      1999-12-12      last obs. used      2019-05-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58432      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:50:32   Additional Information  Earth MOID = 1.5594 au   Jupiter MOID = 2.31778 au   T_jup = 3.340  [ 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 15.5   n/a MPO390435   diameter diameter 4.356 km 0.307 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.071   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   103133 (1999 XX199)          Discovered 1999-Dec-12 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 XX199 = 2001 FB108  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 20:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin