+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20564 Michaellane (1999 RT122) Classification: Main-belt Asteroid          SPK-ID: 2020564 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09372779885575871 3.4677e-08   a 2.661473126433351 1.2097e-08 au q 2.412019108578998 9.5267e-08 au i 4.151682194639162 4.5856e-06 deg node 58.95058259480381 5.2644e-05 deg peri 249.5820129144192 5.826e-05 deg M 306.9528264998715 2.5035e-05 deg tp 2459234.190631717412 (2021-Jan-19.69063172) 0.0001103 TDB period 1585.921018356704 4.34 1.0813e-05 2.96e-08 d yr n .2269974329320787 1.5477e-09 deg/d Q 2.910927144287704 1.3231e-08 au   Orbit Determination Parameters    # obs. used (total)      1363      data-arc span      21793 days (59.67 yr)      first obs. used      1960-10-17      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52211      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 18:43:16   Additional Information  Earth MOID = 1.40118 au   Jupiter MOID = 2.2862 au   T_jup = 3.375  [ hide covariance matrix ] Orbital Elements at Epoch 2456968.5 (2014-Nov-07.0) TDB Reference: JPL 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09207723083722197 3.4651e-08   q 2.41796395799522 9.4912e-08 au tp 2457648.000987068002 (2016-Sep-16.50098707) 0.00011287 TDB node 58.992646451463 5.2635e-05 deg peri 249.3361764383142 5.8463e-05 deg i 4.151284307269856 4.5844e-06 deg   Orbit Determination Parameters    # obs. used (total)      1363      data-arc span      21793 days (59.67 yr)      first obs. used      1960-10-17      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52211      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 18:43:16   Additional Information  Jupiter MOID = 2.2862 au   T_jup = 3.375  Orbit Covariance (6×6)   e q tp node peri i e 1.200688111882471E-15 -3.267065446574316E-15 -2.466496672097055E-13 3.059401122809875E-15 -2.901212554376487E-14 1.864341614489674E-16 q -3.267065446574316E-15 9.008372667834961E-15 5.392958071973989E-13 -9.176678789920175E-15 3.903536870165245E-14 -5.022494428168248E-16 tp -2.466496672097055E-13 5.392958071973989E-13 1.274068903914013E-8 2.660783514599058E-12 2.882453429749719E-9 1.451036001841086E-12 node 3.059401122809875E-15 -9.176678789920175E-15 2.660783514599058E-12 2.770456365178738E-9 -2.762266968197937E-9 -2.532212514529299E-11 peri -2.901212554376487E-14 3.903536870165245E-14 2.882453429749719E-9 -2.762266968197937E-9 3.417879422022888E-9 2.5620210058158E-11 i 1.864341614489674E-16 -5.022494428168248E-16 1.451036001841086E-12 -2.532212514529299E-11 2.5620210058158E-11 2.10167848849429E-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 14.4   n/a MPO384930   diameter diameter 3.437 km 0.791 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.312   0.218 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20564 Michaellane           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Michael Lane mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. He teaches at the C.V. Koogler Middle School, Aztec, New Mexico. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20041028/MPCPages.arc Last Updated: 2004-10-29 [ show close-approach data ] Alternate Designations  1999 RT122 = 1978 WE1 = 1998 HT76  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-29 08:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin