+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20782 Markcroce (2000 RZ52) Classification: Main-belt Asteroid          SPK-ID: 2020782 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09909818752572563 2.8547e-08   a 2.319521957087168 7.6272e-09 au q 2.089661535213705 6.6093e-08 au i .1191075519082448 3.8869e-06 deg node 172.1555929499044 0.0015537 deg peri 288.7451415702051 0.0015538 deg M 224.2445657644948 2.0837e-05 deg tp 2459687.076221244205 (2022-Apr-17.57622124) 7.508e-05 TDB period 1290.316226634711 3.53 6.3644e-06 1.742e-08 d yr n .2790013739026752 1.3762e-09 deg/d Q 2.54938237896063 8.3831e-09 au   Orbit Determination Parameters    # obs. used (total)      2196      data-arc span      11272 days (30.86 yr)      first obs. used      1989-10-02      last obs. used      2020-08-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46104      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:31:31   Additional Information  Earth MOID = 1.10637 au   Jupiter MOID = 2.55565 au   T_jup = 3.572  [ 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 14.59   n/a E2021B10   diameter diameter 4.524 km 0.386 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.164   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20782 Markcroce           Discovered 2000 Sept. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Mark Croce (b. 1986) was awarded second place in the 2004 Intel International Science and Engineering Fair for his engineering project. He attends the Langley High School, McLean, Virginia, 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: 20041226/MPCPages.arc Last Updated: 2004-12-25 Alternate Designations  2000 RZ52 = 1989 TX14 = 1998 FU148 = 1998 FV32 = 1999 NM26 = 2014 WA483  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 15:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin