+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11724 Ronaldhsu (1998 HH146) Classification: Main-belt Asteroid          SPK-ID: 2011724 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09512814073728423 3.0442e-08   a 2.249197877133816 5.7709e-09 au q 2.035235864931829 6.8571e-08 au i 3.266623151006381 3.3691e-06 deg node 96.83903564213848 5.8424e-05 deg peri 14.9940765788391 6.1093e-05 deg M 353.5605954406088 1.7534e-05 deg tp 2459222.538555938709 (2021-Jan-08.03855594) 6.0016e-05 TDB period 1232.082883558618 3.37 4.7418e-06 1.298e-08 d yr n .2921881350710872 1.1245e-09 deg/d Q 2.463159889335802 6.3198e-09 au   Orbit Determination Parameters    # obs. used (total)      1970      data-arc span      17138 days (46.92 yr)      first obs. used      1974-02-19      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46093      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:02:09   Additional Information  Earth MOID = 1.05194 au   Jupiter MOID = 2.60642 au   T_jup = 3.620  [ 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 14.6   n/a MPO449027   11724 Ronaldhsu           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Ronald Hsu (b. 1985) is a finalist in the 2002 Intel International Science and Engineering Fair for his mathematics project. He attends the West Shore Jr/Sr High School, Palm Bay, Florida, 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: 20020724/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1998 HH146 = 1974 DM = 1976 YF7  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-25 08:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin