+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15577 Gywilliams (2000 GN68) Classification: Main-belt Asteroid          SPK-ID: 2015577 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1187995202660773 3.2733e-08   a 2.218361442220995 6.8336e-09 au q 1.954821167108377 7.1547e-08 au i 2.16610626014336 3.4723e-06 deg node 189.3214369417061 0.00010788 deg peri 36.01706708517606 0.00010931 deg M 80.70088212941245 1.6684e-05 deg tp 2458929.965491493348 (2020-Mar-21.46549149) 5.6048e-05 TDB period 1206.83219925918 3.30 5.5764e-06 1.527e-08 d yr n .2983016199111921 1.3784e-09 deg/d Q 2.481901717333613 7.6454e-09 au   Orbit Determination Parameters    # obs. used (total)      783      data-arc span      14763 days (40.42 yr)      first obs. used      1980-03-16      last obs. used      2020-08-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .56139      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:03:16   Additional Information  Earth MOID = .944822 au   Jupiter MOID = 2.49302 au   T_jup = 3.641  [ 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 16.38   n/a E2021B10   diameter diameter 1.767 km 0.227 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.225   0.095 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15577 Gywilliams           Discovered 2000 Apr. 5 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Named in honor of Genevieve Y. Williams for achievement as a finalist in the 2001 Discovery Young Scientist Challenge (DYSC), a middle school science competition. Genevieve is a student at the Palos Verdes Intermediate School, Palos Verdes, California. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20011002/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  2000 GN68 = 1980 FD1 = 1994 RE13  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 09:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin