+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20585 Wentworth (1999 RG160) Classification: Main-belt Asteroid          SPK-ID: 2020585 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0429710124593639 3.9599e-08   a 2.218634867514065 5.8499e-09 au q 2.123297880979339 8.9337e-08 au i 5.962064314990213 3.2333e-06 deg node 104.491951712132 3.8552e-05 deg peri 93.04756152525169 5.3845e-05 deg M 301.8007675378011 3.7363e-05 deg tp 2459395.638038057154 (2021-Jun-30.13803806) 0.00012533 TDB period 1207.055329229704 3.30 4.774e-06 1.307e-08 d yr n .2982464774251384 1.1796e-09 deg/d Q 2.313971854048791 6.1012e-09 au   Orbit Determination Parameters    # obs. used (total)      1835      data-arc span      9919 days (27.16 yr)      first obs. used      1994-01-12      last obs. used      2021-03-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48763      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:24:32   Additional Information  Earth MOID = 1.129 au   Jupiter MOID = 2.65421 au   T_jup = 3.643  [ 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 14.71   n/a E2021B10   diameter diameter 5.299 km 1.289 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.083   0.065 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)   20585 Wentworth           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Sandra Wentworth mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. She teaches at the Presbyterian Christian School, Hattiesburg, Mississippi. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20041028/MPCPages.arc Last Updated: 2004-10-29 Alternate Designations  1999 RG160 = 1994 AN13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-21 15:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin