+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102897 (1999 XA11) Classification: Main-belt Asteroid          SPK-ID: 2102897 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05433109724592033 3.787e-08   a 2.696785973615933 1.7721e-08 au q 2.550266632631971 1.0312e-07 au i 15.45399601066029 5.9543e-06 deg node 32.58612368206816 1.5889e-05 deg peri 228.7165749379752 5.8591e-05 deg M 61.51999128732544 5.4824e-05 deg tp 2458924.072075839205 (2020-Mar-15.57207584) 0.00024676 TDB period 1617.588862019044 4.43 1.5945e-05 4.366e-08 d yr n .2225534611747109 2.1937e-09 deg/d Q 2.843305314599894 1.8684e-08 au   Orbit Determination Parameters    # obs. used (total)      1015      data-arc span      7676 days (21.02 yr)      first obs. used      1999-10-12      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53127      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:51:59   Additional Information  Earth MOID = 1.5582 au   Jupiter MOID = 2.17931 au   T_jup = 3.315  [ 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 14.33   n/a E2021B55   diameter diameter 3.263 km 0.292 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.347   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   102897 (1999 XA11)          Discovered 1999-Dec-05 by CSS at Catalina Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1999 XA11 = 2001 CC34  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-09 02:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin