+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146860 (2002 AL149) Classification: Main-belt Asteroid          SPK-ID: 2146860 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0271776021246612 6.6656e-08   a 2.974619466489364 2.6424e-08 au q 2.893776442156843 1.9174e-07 au i 11.30428464168859 7.1671e-06 deg node 106.8487853296728 4.4964e-05 deg peri 126.6759914216536 0.000179 deg M 91.84948828894382 0.00017355 deg tp 2458522.398847283810 (2019-Feb-07.89884728) 0.00090387 TDB period 1873.896286023692 5.13 2.4969e-05 6.836e-08 d yr n .1921130868794776 2.5598e-09 deg/d Q 3.055462490821884 2.7142e-08 au   Orbit Determination Parameters    # obs. used (total)      231      data-arc span      7241 days (19.82 yr)      first obs. used      2000-10-01      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61785      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 11:32:50   Additional Information  Earth MOID = 1.89253 au   Jupiter MOID = 2.02706 au   T_jup = 3.232  [ hide covariance matrix ] Orbital Elements at Epoch 2457008.5 (2014-Dec-17.0) TDB Reference: JPL 7 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02522274228407162 6.4069e-08   q 2.900942558139787 1.8314e-07 au tp 2456673.724515038421 (2014-Jan-16.22451504) 0.0010027 TDB node 106.9211478025067 4.5053e-05 deg peri 131.8353951602503 0.00019679 deg i 11.29167308281452 7.1529e-06 deg   Orbit Determination Parameters    # obs. used (total)      231      data-arc span      7241 days (19.82 yr)      first obs. used      2000-10-01      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61785      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 11:32:50   Additional Information  Jupiter MOID = 2.02706 au   T_jup = 3.232  Orbit Covariance (6×6)   e q tp node peri i e 4.104830740105154E-15 -1.163063345748549E-14 -2.492060393283081E-11 -1.338556777053968E-15 -4.807665268778474E-12 2.3297205026582E-15 q -1.163063345748549E-14 3.353864804288218E-14 6.941300088599457E-11 1.791856572478164E-14 1.339480741614702E-11 -2.971394966090871E-15 tp -2.492060393283081E-11 6.941300088599457E-11 1.00546681647461E-6 1.138342274371409E-10 1.922197389159298E-7 -3.134495861052941E-11 node -1.338556777053968E-15 1.791856572478164E-14 1.138342274371409E-10 2.029771805864911E-9 -1.967629787245192E-9 1.309756116432844E-10 peri -4.807665268778474E-12 1.339480741614702E-11 1.922197389159298E-7 -1.967629787245192E-9 3.872493070323285E-8 -1.340297355725859E-10 i 2.3297205026582E-15 -2.971394966090871E-15 -3.134495861052941E-11 1.309756116432844E-10 -1.340297355725859E-10 5.116348134474462E-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 15.6   n/a MPO475272   146860 (2002 AL149)          Discovered 2002-Jan-14 by LINEAR at Socorro Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-27 01:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin