+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   214980 (2008 AL72) Classification: Main-belt Asteroid          SPK-ID: 2214980 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06379591414208843 5.1129e-08   a 3.106278076381554 3.5425e-08 au q 2.908110226919264 1.5288e-07 au i 13.428652812189 5.338e-06 deg node 105.6666526052 2.7576e-05 deg peri 349.2090177303789 5.5944e-05 deg M 113.6385598990333 4.8586e-05 deg tp 2458369.277974064876 (2018-Sep-07.77797406) 0.00026876 TDB period 1999.672730264666 5.47 3.4207e-05 9.365e-08 d yr n .1800294590967155 3.0797e-09 deg/d Q 3.304445925843843 3.7685e-08 au   Orbit Determination Parameters    # obs. used (total)      351      data-arc span      6741 days (18.46 yr)      first obs. used      2001-12-11      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5201      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 03:44:46   Additional Information  Earth MOID = 1.92594 au   Jupiter MOID = 1.84759 au   T_jup = 3.175  [ hide covariance matrix ] Orbital Elements at Epoch 2457648.5 (2016-Sep-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06462478125468817 5.0955e-08   q 2.907015473997824 1.5259e-07 au tp 2458372.172924540787 (2018-Sep-10.67292454) 0.00026613 TDB node 105.6829379135656 2.7578e-05 deg peri 349.8033450662187 5.5515e-05 deg i 13.42694900740538 5.3372e-06 deg   Orbit Determination Parameters    # obs. used (total)      351      data-arc span      6741 days (18.46 yr)      first obs. used      2001-12-11      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5201      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 03:44:46   Additional Information  Jupiter MOID = 1.84759 au   T_jup = 3.175  Orbit Covariance (6×6)   e q tp node peri i e 2.596429984720619E-15 -7.603696003688677E-15 -3.514078825131923E-12 7.590308379461418E-16 -7.125590364086689E-13 3.05666077121807E-15 q -7.603696003688677E-15 2.32833291078865E-14 1.163668712338155E-11 -1.446007261111699E-15 2.253618226758614E-12 -7.543127039698843E-15 tp -3.514078825131923E-12 1.163668712338155E-11 7.082480180715562E-8 -5.299739621290723E-11 1.287133452296288E-8 -5.402088960922183E-12 node 7.590308379461418E-16 -1.446007261111699E-15 -5.299739621290723E-11 7.605224654692809E-10 -7.491166433751601E-10 -4.139607796275984E-11 peri -7.125590364086689E-13 2.253618226758614E-12 1.287133452296288E-8 -7.491166433751601E-10 3.081891010755729E-9 3.898655936075398E-11 i 3.05666077121807E-15 -7.543127039698843E-15 -5.402088960922183E-12 -4.139607796275984E-11 3.898655936075398E-11 2.848581701561739E-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 15.4   n/a MPO475763   214980 (2008 AL72)          Discovered 2008-Jan-14 by Spacewatch at Kitt Peak Reference: 20090509/Numbers.arc Last Updated: 2009-05-11 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 17:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin