+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26417 Michaelgord (1999 XO87) Classification: Main-belt Asteroid          SPK-ID: 2026417 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05733078091521997 4.1261e-08   a 2.256408394777377 8.6712e-09 au q 2.127046739441132 9.3795e-08 au i 6.082976702786644 3.9007e-06 deg node 252.1273204925873 4.0155e-05 deg peri 318.3361240433323 5.6271e-05 deg M 259.3166068186833 4.2915e-05 deg tp 2459346.742464083347 (2021-May-12.24246408) 0.00014845 TDB period 1238.012378521378 3.39 7.1363e-06 1.954e-08 d yr n .2907886918141858 1.6762e-09 deg/d Q 2.385770050113622 9.1683e-09 au   Orbit Determination Parameters    # obs. used (total)      1353      data-arc span      8697 days (23.81 yr)      first obs. used      1997-01-12      last obs. used      2020-11-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51515      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:28:57   Additional Information  Earth MOID = 1.12393 au   Jupiter MOID = 2.59746 au   T_jup = 3.614  [ show covariance matrix ] [ 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 14.8   n/a MPO452539   diameter diameter 2.325 km 0.557 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.472   0.199 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   26417 Michaelgord           Discovered 1999 Dec. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Michael Aaron Gord (b. 1992) was awarded second place in the 2010 Intel International Science and Engineering Fair for his chemistry project. He attends the Dayton Christian High School, Miamisburg, Ohio, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20110319/MPCPages.arc Last Updated: 2011-03-23 [ show close-approach data ] Alternate Designations  1999 XO87 = 1997 AY24  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 13:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin