+ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09372779608022068 3.4232e-08   a 2.661473125417688 1.1907e-08 au q 2.412019115045551 9.4403e-08 au i 4.151681733414754 4.5436e-06 deg node 58.95059524535254 5.0179e-05 deg peri 249.5819986212266 5.598e-05 deg M 306.9528287144024 2.4588e-05 deg tp 2459234.190621827889 (2021-Jan-19.69062183) 0.00010828 TDB period 1585.921017448883 4.34 1.0643e-05 2.914e-08 d yr n .2269974330620178 1.5234e-09 deg/d Q 2.910927135789825 1.3023e-08 au   Orbit Determination Parameters    # obs. used (total)      1420      data-arc span      21859 days (59.85 yr)      first obs. used      1960-10-17      last obs. used      2020-08-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5185      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:02:05   Additional Information  Earth MOID = 1.40118 au   Jupiter MOID = 2.2862 au   T_jup = 3.375  [ hide covariance matrix ] Orbital Elements at Epoch 2457081.5 (2015-Feb-28.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09234997471341024 3.4223e-08   q 2.41632279868806 9.413e-08 au tp 2457648.559122832579 (2016-Sep-17.05912283) 0.00011079 TDB node 58.97029565391529 5.0174e-05 deg peri 249.5528033587805 5.6152e-05 deg i 4.151588631433978 4.543e-06 deg   Orbit Determination Parameters    # obs. used (total)      1420      data-arc span      21859 days (59.85 yr)      first obs. used      1960-10-17      last obs. used      2020-08-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5185      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:02:05   Additional Information  Jupiter MOID = 2.2862 au   T_jup = 3.375  Orbit Covariance (6×6)   e q tp node peri i e 1.17122176330865E-15 -3.200962079784261E-15 -3.442891930144343E-13 4.332014562107273E-15 -4.82515437234802E-14 8.321385625819086E-17 q -3.200962079784261E-15 8.860489893838486E-15 7.651184428656918E-13 -1.316238243497196E-14 8.472645851517869E-14 -9.360814674454355E-17 tp -3.442891930144343E-13 7.651184428656918E-13 1.227376935241098E-8 -7.925183046185386E-12 2.802389483075902E-9 1.674802224468432E-12 node 4.332014562107273E-15 -1.316238243497196E-14 -7.925183046185386E-12 2.517410011692211E-9 -2.512124912416996E-9 -1.571906024130827E-11 peri -4.82515437234802E-14 8.472645851517869E-14 2.802389483075902E-9 -2.512124912416996E-9 3.153007619519264E-9 1.608325734581541E-11 i 8.321385625819086E-17 -9.360814674454355E-17 1.674802224468432E-12 -1.571906024130827E-11 1.608325734581541E-11 2.063862912097037E-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 ] 2021-Jan-26 00:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin