+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19417 Madelynho (1998 FG40) Classification: Main-belt Asteroid          SPK-ID: 2019417 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1124599343571798 3.1656e-08   a 2.426210170703544 8.8421e-09 au q 2.153358734169502 7.8296e-08 au i 1.130304093313553 3.4439e-06 deg node 358.8542698207349 0.00017143 deg peri 165.8190920218591 0.00017215 deg M 16.29717402857414 1.6389e-05 deg tp 2459138.011390948467 (2020-Oct-15.51139095) 6.2725e-05 TDB period 1380.355834644057 3.78 7.5459e-06 2.066e-08 d yr n .2608023170292396 1.4257e-09 deg/d Q 2.699061607237586 9.8365e-09 au   Orbit Determination Parameters    # obs. used (total)      1095      data-arc span      9895 days (27.09 yr)      first obs. used      1994-01-09      last obs. used      2021-02-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52982      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:53:40   Additional Information  Earth MOID = 1.16043 au   Jupiter MOID = 2.27212 au   T_jup = 3.501  [ 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 15.37   n/a E2021B10   19417 Madelynho           Discovered 1998 Mar. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Madelyn Meng-Ling Ho (b. 1986) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her engineering project. She attends the William P. Clements High School, Sugar Land, Texas, 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: 20040830/MPCPages.arc Last Updated: 2004-09-06 Alternate Designations  1998 FG40 = 1994 CB9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-18 00:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin