+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   120569 Huangrunqian (1995 FU20) Classification: Main-belt Asteroid          SPK-ID: 2120569 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1767132099699221 3.9258e-08   a 3.138524052308217 2.4397e-08 au q 2.583905392457024 1.1935e-07 au i 11.32626665765076 3.7816e-06 deg node 143.81286763 2.115e-05 deg peri 36.21176298133601 2.4147e-05 deg M 215.0552315056746 1.5037e-05 deg tp 2460018.186189908291 (2023-Mar-14.68618991) 9.2096e-05 TDB period 2030.891017487873 5.56 2.368e-05 6.483e-08 d yr n .1772620967349124 2.0669e-09 deg/d Q 3.69314271215941 2.8708e-08 au   Orbit Determination Parameters    # obs. used (total)      694      data-arc span      9420 days (25.79 yr)      first obs. used      1995-03-24      last obs. used      2021-01-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50883      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:25:24   Additional Information  Earth MOID = 1.59802 au   Jupiter MOID = 1.3195 au   T_jup = 3.157  [ 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 14.8   n/a MPO493688   120569 Huangrunqian           Discovered 1995 Mar. 24 by the Beijing Schmidt CCD Asteroid Program at Xinglong. Chinese astrophysicist and academician of the Chinese Academy of Sciences Huang Runqian (b. 1933) has made many contributions to astrophysics. He established a theory of the nonconservative evolution of binary stars, a theory of shock waves from colliding winds, and a theory of the evolution of rotating binary stars. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20081212/MPCPages.arc Last Updated: 2008-12-12 [ show close-approach data ] Alternate Designations  1995 FU20 = 2000 AF178  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 17:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin