+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   442182 (2011 AL75) Classification: Main-belt Asteroid          SPK-ID: 2442182 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2212477563359097 6.1128e-08   a 2.284584043879998 1.7434e-08 au q 1.779124950010729 1.4215e-07 au i 22.6976393670328 6.9325e-06 deg node 130.3703371585134 1.3588e-05 deg peri 39.32628113209645 1.7971e-05 deg M 228.4770261824251 1.193e-05 deg tp 2459461.295527281907 (2021-Sep-03.79552728) 4.4442e-05 TDB period 1261.273106944605 3.45 1.4437e-05 3.953e-08 d yr n .285425890727258 3.2671e-09 deg/d Q 2.790043137749267 2.1291e-08 au   Orbit Determination Parameters    # obs. used (total)      268      data-arc span      6110 days (16.73 yr)      first obs. used      2004-02-22      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49496      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:27:17   Additional Information  Earth MOID = .827866 au   Jupiter MOID = 2.30367 au   T_jup = 3.470  [ hide covariance matrix ] Orbital Elements at Epoch 2457906.5 (2017-Jun-02.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .220848930817611 6.1214e-08   q 1.780520372195306 1.4233e-07 au tp 2458200.268952075473 (2018-Mar-22.76895208) 3.8623e-05 TDB node 130.3954872032474 1.3593e-05 deg peri 39.40424582644078 1.7986e-05 deg i 22.68924328104426 6.9309e-06 deg   Orbit Determination Parameters    # obs. used (total)      268      data-arc span      6110 days (16.73 yr)      first obs. used      2004-02-22      last obs. used      2020-11-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49496      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:27:17   Additional Information  Jupiter MOID = 2.30367 au   T_jup = 3.470  Orbit Covariance (6×6)   e q tp node peri i e 3.747143994154572E-15 -8.67359678791896E-15 -4.10562172892759E-13 1.959590783361729E-14 -6.784560639663592E-14 -9.645153065705647E-15 q -8.67359678791896E-15 2.025888917372157E-14 1.067829555785432E-12 -4.33372273479426E-14 1.76248512749733E-13 2.506392756647234E-14 tp -4.10562172892759E-13 1.067829555785432E-12 1.491717279202539E-9 2.307090879335134E-12 4.694055395485928E-10 1.459718004442961E-11 node 1.959590783361729E-14 -4.33372273479426E-14 2.307090879335134E-12 1.847692167365141E-10 -1.688189205066911E-10 2.263818073667269E-11 peri -6.784560639663592E-14 1.76248512749733E-13 4.694055395485928E-10 -1.688189205066911E-10 3.235075188630565E-10 -1.642600654494941E-11 i -9.645153065705647E-15 2.506392756647234E-14 1.459718004442961E-11 2.263818073667269E-11 -1.642600654494941E-11 4.803775614449797E-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 16.9   n/a MPO456095   442182 (2011 AL75)          Discovered 2004-Feb-22 by LINEAR at Socorro Reference: Last Updated: 2015-09-02 Alternate Designations  2011 AL75 = 2004 DV49  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-23 06:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin