+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103020 (1999 XP106) Classification: Main-belt Asteroid          SPK-ID: 2103020 [ 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 .1991242701552561 2.0456e-07   a 2.517492742784363 6.8641e-09 au q 2.016198837756273 5.1413e-07 au i 11.78045215680375 7.0922e-06 deg node 28.94866986884377 1.5025e-05 deg peri 1.513939324707337 2.9698e-05 deg M 108.4102629197919 1.387e-05 deg tp 2458761.141872431719 (2019-Oct-04.64187243) 5.6132e-05 TDB period 1458.98480148142 3.99 5.967e-06 1.634e-08 d yr n .2467469158242527 1.0092e-09 deg/d Q 3.018786647812453 8.231e-09 au   Orbit Determination Parameters    # obs. used (total)      1214      data-arc span      10721 days (29.35 yr)      first obs. used      1991-11-07      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45266      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:44:43   Additional Information  Earth MOID = 1.0205 au   Jupiter MOID = 2.43242 au   T_jup = 3.401  [ 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 15.55   n/a E2021B55   103020 (1999 XP106)          Discovered 1999-Dec-04 by CSS at Catalina Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2136-Dec-09 17:51 00:03 Hebe 0.0381419616148221 0.0381254238239027 0.0381585025098355 6.13764697978447 6.13764695322909 2501561.243659833 2.52674249601966 992.444354471556 155.485884472608 -34.299551349721 21211.9888675304 T 22 CATAB v2.0f-lin.ifort 2021-Apr-13 15:44:46 2021-Apr-13 15:44 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-23 12:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin