+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20778 Wangchaohao (2000 RD11) Classification: Main-belt Asteroid          SPK-ID: 2020778 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1496577481463671 2.8799e-08   a 2.40137972287091 8.0067e-09 au q 2.041994641101702 6.7894e-08 au i 2.806251781801741 3.1539e-06 deg node 89.23876587165917 6.8545e-05 deg peri 5.775314621318996 6.9514e-05 deg M 78.27942063777566 1.1553e-05 deg tp 2458704.947397753858 (2019-Aug-09.44739775) 4.315e-05 TDB period 1359.219778860574 3.72 6.7979e-06 1.861e-08 d yr n .264857829174459 1.3246e-09 deg/d Q 2.760764804640117 9.2049e-09 au   Orbit Determination Parameters    # obs. used (total)      1648      data-arc span      11105 days (30.40 yr)      first obs. used      1989-12-30      last obs. used      2020-05-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49503      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:00:44   Additional Information  Earth MOID = 1.05879 au   Jupiter MOID = 2.40173 au   T_jup = 3.509  [ 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 15.0   n/a MPO416928   20778 Wangchaohao           Discovered 2000 Sept. 1 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Wang Chaohao (b. 1986) was awarded second place in the 2004 Intel International Science and Engineering Fair for his earth and space sciences team project. He attends the Shanghai High School, Shanghai, China. 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 [ show close-approach data ] Alternate Designations  2000 RD11 = 1989 YY3 = 1998 HP74  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-03 08:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin