+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103022 (1999 XU109) Classification: Main-belt Asteroid          SPK-ID: 2103022 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1709423165924437 2.6338e-08   a 2.574276561764247 8.193e-09 au q 2.134223762746636 6.759e-08 au i 3.052241124370422 3.6917e-06 deg node 175.7202342873425 6.8832e-05 deg peri 226.6390456405927 7.0152e-05 deg M 44.88973917499105 1.4167e-05 deg tp 2459012.383966918193 (2020-Jun-11.88396692) 5.8997e-05 TDB period 1508.624758220463 4.13 7.2021e-06 1.972e-08 d yr n .2386279278782666 1.1392e-09 deg/d Q 3.014329360781858 9.5935e-09 au   Orbit Determination Parameters    # obs. used (total)      1451      data-arc span      7820 days (21.41 yr)      first obs. used      1999-10-06      last obs. used      2021-03-04      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45467      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:44:43   Additional Information  Earth MOID = 1.14307 au   Jupiter MOID = 2.39099 au   T_jup = 3.405  [ hide covariance matrix ] Orbital Elements at Epoch 2457248.5 (2015-Aug-14.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1716987033905281 2.6414e-08   q 2.132194535956716 6.791e-08 au tp 2457498.989219567955 (2016-Apr-20.48921957) 5.5616e-05 TDB node 175.8498996229667 6.8651e-05 deg peri 225.5640055865905 6.9958e-05 deg i 3.054590627430919 3.6977e-06 deg   Orbit Determination Parameters    # obs. used (total)      1451      data-arc span      7820 days (21.41 yr)      first obs. used      1999-10-06      last obs. used      2021-03-04      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45467      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:44:43   Additional Information  Jupiter MOID = 2.39099 au   T_jup = 3.405  Orbit Covariance (6×6)   e q tp node peri i e 6.976798657217627E-16 -1.784506733275295E-15 -3.448893351755738E-14 -1.213343754579214E-15 1.032512968235207E-15 3.486309630432876E-17 q -1.784506733275295E-15 4.611801743527665E-15 2.229267750983525E-13 3.190124619916271E-15 2.760159546096911E-14 -9.157984145564059E-17 tp -3.448893351755738E-14 2.229267750983525E-13 3.093182054121318E-9 -1.666471352863709E-13 7.633341622859929E-10 -4.873041975826502E-13 node -1.213343754579214E-15 3.190124619916271E-15 -1.666471352863709E-13 4.713012213629406E-9 -4.706011082212254E-9 -7.280632150557927E-11 peri 1.032512968235207E-15 2.760159546096911E-14 7.633341622859929E-10 -4.706011082212254E-9 4.894139026146974E-9 7.258829001213931E-11 i 3.486309630432876E-17 -9.157984145564059E-17 -4.873041975826502E-13 -7.280632150557927E-11 7.258829001213931E-11 1.36726608887677E-11 [ 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 15.1   n/a MPO493579   103022 (1999 XU109)          Discovered 1999-Dec-04 by CSS at Catalina Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 XU109 = 2001 FF40  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 23:50 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin