+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21815 Fanyang (1999 TF29) Classification: Main-belt Asteroid          SPK-ID: 2021815 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07969145263679359 1.2675e-08   a 2.404243590766391 8.7514e-09 au q 2.212645926525517 3.2169e-08 au i 4.224322037425699 3.6208e-07 deg node 207.2145029009605 1.0304e-05 deg peri 69.68463913682021 2.2089e-05 deg M 329.5185643903746 2.5409e-05 deg tp 2459315.791965749139 (2021-Apr-11.29196575) 9.6407e-05 TDB period 1361.651997013669 3.73 7.4346e-06 2.035e-08 d yr n .2643847332428112 1.4435e-09 deg/d Q 2.595841255007265 9.4488e-09 au   Orbit Determination Parameters    # obs. used (total)      2089      data-arc span      14557 days (39.85 yr)      first obs. used      1980-08-04      last obs. used      2020-06-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47908      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:53:46   Additional Information  Earth MOID = 1.19886 au   Jupiter MOID = 2.47235 au   T_jup = 3.516  [ 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 14.12   n/a E2021B10   diameter diameter 4.382 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.278   0.086 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21815 Fanyang           Discovered 1999 Oct. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Fan Yang (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for her biochemistry project. She attends the Davis Senior High School, Davis, California, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050822/MPCPages.arc Last Updated: 2005-08-26 [ show close-approach data ] Alternate Designations  1999 TF29 = 1980 PG4 = 1998 HV76  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-22 11:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin