+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   94400 Hongdaeyong (2001 SG267) Classification: Main-belt Asteroid          SPK-ID: 2094400 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1348771598734351 3.9233e-08   a 2.194177528306132 1.3435e-08 au q 1.898233095030087 8.6542e-08 au i 2.796242528678982 7.3121e-06 deg node 15.06725577924587 0.0001262 deg peri 223.2748219440452 0.00013087 deg M 83.81887402721149 3.6813e-05 deg tp 2458924.095319459745 (2020-Mar-15.59531946) 0.0001205 TDB period 1187.151296761487 3.25 1.0903e-05 2.985e-08 d yr n .3032469416342037 2.7851e-09 deg/d Q 2.490121961582176 1.5247e-08 au   Orbit Determination Parameters    # obs. used (total)      271      data-arc span      7894 days (21.61 yr)      first obs. used      1997-04-30      last obs. used      2018-12-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65475      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 10:06:36   Additional Information  Earth MOID = .88602 au   Jupiter MOID = 2.51141 au   T_jup = 3.657  [ 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 17.2   n/a MPO417469   94400 Hongdaeyong           Discovered 2001 Sept. 25 by Y.-B. Jeon, Y.-H. Park and K.-J. Choo at Bohyunsan Optical Astronomy Observatory. Hong Daeyong (1731-1783), a scientist in the late Chosun Dynasty, worked to overcome old, conventional cosmology in Korea and advocated new concepts introduced through China. He also invented numerous astronomical instruments. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050919/MPCPages.arc Last Updated: 2005-09-26 Alternate Designations  2001 SG267 = 1997 HC9  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-05 11:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin