+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19874 Liudongyan (6775 P-L) Classification: Main-belt Asteroid          SPK-ID: 2019874 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2016830855628274 2.9819e-08   a 2.354069684368156 7.1523e-09 au q 1.879293646794875 7.0542e-08 au i 1.523652191270506 3.0342e-06 deg node 102.6770724262672 0.00017952 deg peri 331.7061663961387 0.00017985 deg M 189.3384662656749 1.1795e-05 deg tp 2459825.903838162436 (2022-Sep-03.40383816) 4.4326e-05 TDB period 1319.250898617662 3.61 6.0124e-06 1.646e-08 d yr n .2728821336238734 1.2436e-09 deg/d Q 2.828845721941438 8.5948e-09 au   Orbit Determination Parameters    # obs. used (total)      727      data-arc span      21822 days (59.75 yr)      first obs. used      1960-09-24      last obs. used      2020-06-23      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .49431      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:08:22   Additional Information  Earth MOID = .894013 au   Jupiter MOID = 2.4421 au   T_jup = 3.527  [ 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 16.42   n/a E2021B10   19874 Liudongyan           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Dongyan Liu (b. 1987) of Suzhou, Jiangsu, a student majoring in English at Suzhou University, served as interpreter for the International Workshop on Cometary Astronomy and a total solar eclipse expedition in China in July 2009. The name was suggested by D. W. E. Green. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20091004/MPCPages.arc Last Updated: 2009-10-06 Alternate Designations  6775 P-L = 2000 VK16  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 09:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin