+ 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 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02717759411559433 6.3924e-08   a 2.974619470805477 2.4594e-08 au q 2.893776470179581 1.8019e-07 au i 11.30428388929654 6.1396e-06 deg node 106.8487882174935 4.3985e-05 deg peri 126.6759790387693 0.00017733 deg M 91.84949606200911 0.00017274 deg tp 2458522.398805782353 (2019-Feb-07.89880578) 0.00089948 TDB period 1873.896290102171 5.13 2.324e-05 6.363e-08 d yr n .1921130864613493 2.3826e-09 deg/d Q 3.055462471431372 2.5263e-08 au   Orbit Determination Parameters    # obs. used (total)      271      data-arc span      7321 days (20.04 yr)      first obs. used      2000-10-01      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58699      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 14:23:10   Additional Information  Earth MOID = 1.89253 au   Jupiter MOID = 2.02706 au   T_jup = 3.232  [ hide covariance matrix ] Orbital Elements at Epoch 2457725.5 (2016-Dec-03.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02574267853955177 6.1025e-08   q 2.898266876861222 1.7031e-07 au tp 2458547.758635471104 (2019-Mar-05.25863547) 0.00097395 TDB node 106.9055471856248 4.408e-05 deg peri 131.716295262852 0.00019157 deg i 11.29176675731442 6.1232e-06 deg   Orbit Determination Parameters    # obs. used (total)      271      data-arc span      7321 days (20.04 yr)      first obs. used      2000-10-01      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58699      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 14:23:10   Additional Information  Jupiter MOID = 2.02706 au   T_jup = 3.232  Orbit Covariance (6×6)   e q tp node peri i e 3.724103328711578E-15 -1.031588711589507E-14 -2.514992060966777E-11 -1.032513458014119E-14 -5.024883625212162E-12 8.322057728142308E-15 q -1.031588711589507E-14 2.900418540813391E-14 7.138917658446579E-11 4.191337888712964E-14 1.419888174222786E-11 -2.041457738751286E-14 tp -2.514992060966777E-11 7.138917658446579E-11 9.485748708757858E-7 3.915376084590535E-10 1.81672551505123E-7 -1.764336718681108E-10 node -1.032513458014119E-14 4.191337888712964E-14 3.915376084590535E-10 1.94302303628094E-9 -1.831200808527463E-9 1.583759709303282E-10 peri -5.024883625212162E-12 1.419888174222786E-11 1.81672551505123E-7 -1.831200808527463E-9 3.669832935882997E-8 -1.896034399898278E-10 i 8.322057728142308E-15 -2.041457738751286E-14 -1.764336718681108E-10 1.583759709303282E-10 -1.896034399898278E-10 3.749386529886992E-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 ] 2021-Jan-17 19:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin