+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103215 (1999 XZ260) Classification: Main-belt Asteroid          SPK-ID: 2103215 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1372661645696997 4.2149e-08   a 2.232945995858284 1.0034e-08 au q 1.926438063315549 9.5361e-08 au i 3.180197695798603 4.6655e-06 deg node 257.3801756704431 8.457e-05 deg peri 85.86859707480322 8.6318e-05 deg M 187.5549087420596 1.8182e-05 deg tp 2459784.300001994995 (2022-Jul-23.80000200) 6.3339e-05 TDB period 1218.753164761487 3.34 8.2149e-06 2.249e-08 d yr n .2953838483532905 1.991e-09 deg/d Q 2.53945392840102 1.1411e-08 au   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      8858 days (24.25 yr)      first obs. used      1996-12-13      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56896      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:45:40   Additional Information  Earth MOID = .919836 au   Jupiter MOID = 2.8349 au   T_jup = 3.626  [ hide covariance matrix ] Orbital Elements at Epoch 2456836.5 (2014-Jun-28.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1379431015275434 4.2194e-08   q 1.924455174065278 9.5486e-08 au tp 2457346.477844628384 (2015-Nov-19.97784463) 5.6766e-05 TDB node 257.4482700161438 8.4656e-05 deg peri 85.77696602190103 8.6374e-05 deg i 3.178290731091573 4.6642e-06 deg   Orbit Determination Parameters    # obs. used (total)      422      data-arc span      8858 days (24.25 yr)      first obs. used      1996-12-13      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56896      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:45:40   Additional Information  Jupiter MOID = 2.8349 au   T_jup = 3.626  Orbit Covariance (6×6)   e q tp node peri i e 1.780298919221835E-15 -4.012665489831092E-15 -5.780244852586983E-13 1.772421267144454E-15 -1.828244450765563E-13 -4.44546297252794E-16 q -4.012665489831092E-15 9.117530499830712E-15 1.410476720838294E-12 -5.250627626482319E-15 4.348069150636906E-13 1.151139904146738E-15 tp -5.780244852586983E-13 1.410476720838294E-12 3.222326755491983E-9 -1.908527194854392E-11 9.898963066726763E-10 2.604959617657294E-14 node 1.772421267144454E-15 -5.250627626482319E-15 -1.908527194854392E-11 7.166700876213552E-9 -7.161003855525408E-9 9.227177273280354E-11 peri -1.828244450765563E-13 4.348069150636906E-13 9.898963066726763E-10 -7.161003855525408E-9 7.460386833569806E-9 -9.213841667243258E-11 i -4.44546297252794E-16 1.151139904146738E-15 2.604959617657294E-14 9.227177273280354E-11 -9.213841667243258E-11 2.175486030322091E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.70   n/a E2021B55   103215 (1999 XZ260)          Discovered 1999-Dec-08 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1999 XZ260 = 1996 XQ29  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-18 14:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin