+ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06379592660470761 5.4097e-08   a 3.106278067983685 3.7383e-08 au q 2.908110180344785 1.6654e-07 au i 13.42865266254872 6.0022e-06 deg node 105.6666524636398 2.7604e-05 deg peri 349.2090230872458 5.6446e-05 deg M 113.6385569415008 4.8787e-05 deg tp 2458369.277993052700 (2018-Sep-07.77799305) 0.00027022 TDB period 1999.672722155449 5.47 3.6098e-05 9.883e-08 d yr n .1800294598267839 3.2499e-09 deg/d Q 3.304445955622585 3.9768e-08 au   Orbit Determination Parameters    # obs. used (total)      332      data-arc span      6713 days (18.38 yr)      first obs. used      2001-12-11      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52601      source      ORB      producer      Otto Matic      solution date      2020-May-21 09:13:40   Additional Information  Earth MOID = 1.92594 au   Jupiter MOID = 1.84759 au   T_jup = 3.175  [ hide covariance matrix ] Orbital Elements at Epoch 2457414.5 (2016-Jan-27.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06484525608995072 5.3957e-08   q 2.90570047128278 1.6637e-07 au tp 2458372.226865283131 (2018-Sep-10.72686528) 0.00026649 TDB node 105.685019067516 2.7601e-05 deg peri 349.8644376519913 5.5843e-05 deg i 13.42866356992323 6.0023e-06 deg   Orbit Determination Parameters    # obs. used (total)      332      data-arc span      6713 days (18.38 yr)      first obs. used      2001-12-11      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52601      source      ORB      producer      Otto Matic      solution date      2020-May-21 09:13:40   Additional Information  Jupiter MOID = 1.84759 au   T_jup = 3.175  Orbit Covariance (6×6)   e q tp node peri i e 2.911382810561486E-15 -8.77998506064823E-15 -3.049078693605479E-12 2.967415509571231E-16 -5.834132717695933E-13 1.722478827515781E-15 q -8.77998506064823E-15 2.76781330000362E-14 9.903003496004423E-12 -2.498910109567001E-16 1.772008741046768E-12 -3.560400927789289E-15 tp -3.049078693605479E-12 9.903003496004423E-12 7.10180872744103E-8 -4.66605148217931E-11 1.296905460522737E-8 1.245778343215072E-11 node 2.967415509571231E-16 -2.498910109567001E-16 -4.66605148217931E-11 7.618248657732253E-10 -7.49189439093447E-10 -3.838379990347295E-11 peri -5.834132717695933E-13 1.772008741046768E-12 1.296905460522737E-8 -7.49189439093447E-10 3.118450005362524E-9 3.93497374427685E-11 i 1.722478827515781E-15 -3.560400927789289E-15 1.245778343215072E-11 -3.838379990347295E-11 3.93497374427685E-11 3.60272080329036E-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 ] 2020-Sep-22 14:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin