+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103105 (1999 XB175) Classification: Main-belt Asteroid          SPK-ID: 2103105 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09149358309638141 3.2966e-08   a 2.276031582674655 8.5454e-09 au q 2.067789297935223 7.7415e-08 au i 6.506900801238816 4.4425e-06 deg node 42.91184652186081 3.507e-05 deg peri 48.16482595646146 4.4557e-05 deg M 52.65540302205044 2.8223e-05 deg tp 2459017.054824956016 (2020-Jun-16.55482496) 9.7997e-05 TDB period 1254.197275599214 3.43 7.0634e-06 1.934e-08 d yr n .287036184022967 1.6165e-09 deg/d Q 2.484273867414087 9.3273e-09 au   Orbit Determination Parameters    # obs. used (total)      1009      data-arc span      7718 days (21.13 yr)      first obs. used      1999-12-08      last obs. used      2021-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50549      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 19:33:28   Additional Information  Earth MOID = 1.09005 au   Jupiter MOID = 2.66205 au   T_jup = 3.595  [ 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 15.38   n/a E2021B55   diameter diameter 1.862 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.424   0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   103105 (1999 XB175)          Discovered 1999-Dec-10 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-01 11:19 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin