+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103072 (1999 XJ151) Classification: Main-belt Asteroid          SPK-ID: 2103072 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3395318049912578 3.6043e-08   a 2.75117291573087 1.2594e-08 au q 1.817062209809706 1.003e-07 au i 7.733921070951573 5.8281e-06 deg node 25.56848060064232 3.1639e-05 deg peri 82.76947580269355 3.3151e-05 deg M 216.226798229627 8.6301e-06 deg tp 2459866.157303766878 (2022-Oct-13.65730377) 4.116e-05 TDB period 1666.768399154184 4.56 1.1445e-05 3.133e-08 d yr n .2159868162743457 1.483e-09 deg/d Q 3.685283621652034 1.687e-08 au   Orbit Determination Parameters    # obs. used (total)      572      data-arc span      9451 days (25.88 yr)      first obs. used      1994-09-29      last obs. used      2020-08-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53215      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:50:53   Additional Information  Earth MOID = .852664 au   Jupiter MOID = 1.57004 au   T_jup = 3.247  [ 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 15.86   n/a E2021B55   diameter diameter 3.213 km 0.880 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   geometric albedo albedo 0.082   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   103072 (1999 XJ151)          Discovered 1999-Dec-13 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 XJ151 = 1994 TP8  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-04 21:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin