+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19872 Chendonghua (6097 P-L) Classification: Main-belt Asteroid          SPK-ID: 2019872 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2100400501292322 3.3384e-08   a 2.366838905135383 8.0326e-09 au q 1.86970794285293 8.0441e-08 au i 1.270181573131207 3.8167e-06 deg node 275.6679354888282 0.00017542 deg peri 38.53900713208915 0.00017567 deg M 225.5749162869589 1.0281e-05 deg tp 2459697.125815073310 (2022-Apr-27.62581507) 3.8675e-05 TDB period 1329.999494797019 3.64 6.7706e-06 1.854e-08 d yr n .2706767945464086 1.3779e-09 deg/d Q 2.863969867417836 9.7197e-09 au   Orbit Determination Parameters    # obs. used (total)      1225      data-arc span      22087 days (60.47 yr)      first obs. used      1960-09-24      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5337      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:08:19   Additional Information  Earth MOID = .854034 au   Jupiter MOID = 2.42314 au   T_jup = 3.517  [ 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 15.39   n/a E2021B10   diameter diameter 2.532 km 0.344 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.229   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19872 Chendonghua           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Donghua Chen (b. 1948) of Gulangyu, Xiamen, is a retired surgeon and active amateur astronomer well known throughout China. He helped organize the fourth International Workshop on Cometary Astronomy in Shanghai 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  6097 P-L = 1989 RN4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-19 16:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin