+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   23238 Ocasio-Cortez (2000 WU111) Classification: Main-belt Asteroid          SPK-ID: 2023238 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1258355645997357 3.1787e-08   a 2.460532021190197 1.0465e-08 au q 2.150909585087999 7.6594e-08 au i 6.222529544997583 4.5608e-06 deg node 6.141822612277275 3.3694e-05 deg peri 277.4152958086119 3.9345e-05 deg M 158.9707106569137 2.2132e-05 deg tp 2458377.975319996985 (2018-Sep-16.47532000) 8.5163e-05 TDB period 1409.749531061424 3.86 8.9934e-06 2.462e-08 d yr n .2553645112610535 1.6291e-09 deg/d Q 2.770154457292394 1.1781e-08 au   Orbit Determination Parameters    # obs. used (total)      1587      data-arc span      10217 days (27.97 yr)      first obs. used      1992-10-31      last obs. used      2020-10-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52495      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:46:49   Additional Information  Earth MOID = 1.14556 au   Jupiter MOID = 2.38801 au   T_jup = 3.471  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.7   n/a MPO431770   diameter diameter 2.322 km 0.635 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.156   0.072 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   23238 Ocasio-Cortez           Discovered 2000 Nov. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team in Socorro. Alexandria Ocasio-Cortez (b. 1989) was awarded second place in the 2007 Intel International Science and Engineering Fair for her microbiology project. She attends the Yorktown High School, Yorktown Heights, New York, 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: 20070828/MPCPages.arc Last Updated: 2007-08-30 Alternate Designations  2000 WU111 = 1992 UB9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 07:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin