+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20760 Chanmatchun (2000 DR8) Classification: Main-belt Asteroid          SPK-ID: 2020760 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1626036930677375 1.7153e-08   a 2.41957223181425 7.0168e-09 au q 2.026140851277105 4.1436e-08 au i 7.364705677850913 5.1639e-07 deg node 35.92147482253873 4.2281e-06 deg peri 266.9308117534317 6.06e-06 deg M 82.49862741165738 4.7056e-06 deg tp 2458885.470998574643 (2020-Feb-05.97099857) 1.7595e-05 TDB period 1374.694877615663 3.76 5.98e-06 1.637e-08 d yr n .2618762940503577 1.1392e-09 deg/d Q 2.813003612351395 8.1578e-09 au   Orbit Determination Parameters    # obs. used (total)      2602      data-arc span      18041 days (49.39 yr)      first obs. used      1971-10-11      last obs. used      2021-03-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .43322      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:30:45   Additional Information  Earth MOID = 1.02541 au   Jupiter MOID = 2.44033 au   T_jup = 3.485  [ 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 13.77   n/a E2021B10   diameter diameter 3.603 km 0.265 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.140   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   20760 Chanmatchun           Discovered 2000 Feb. 27 by W. K. Y. Yeung at Rock Finder Observatory. Mat Chun Chan (b. 1934) is the discoverer's mother, and this minor planet is named for her unconditional love. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010309/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  2000 DR8 = 1971 TM3 = 1990 UE13 = 1998 XD45  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-17 05:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin