+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   13926 Berners-Lee (1986 XT) Classification: Main-belt Asteroid          SPK-ID: 2013926 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2952487921087983 3.8853e-08   a 2.561676845123149 1.0311e-08 au q 1.805344850827462 9.5544e-08 au i 3.271068625158466 4.3984e-06 deg node 354.7722183146141 8.1093e-05 deg peri 19.6337177086535 8.1716e-05 deg M 91.28996772281023 1.3963e-05 deg tp 2458620.743257230226 (2019-May-17.24325723) 5.6572e-05 TDB period 1497.562446425962 4.10 9.0416e-06 2.475e-08 d yr n .2403906433812929 1.4514e-09 deg/d Q 3.318008839418836 1.3355e-08 au   Orbit Determination Parameters    # obs. used (total)      1297      data-arc span      12204 days (33.41 yr)      first obs. used      1986-11-25      last obs. used      2020-04-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55468      source      ORB      producer      Otto Matic      solution date      2020-May-20 03:56:41   Additional Information  Earth MOID = .806603 au   Jupiter MOID = 2.15227 au   T_jup = 3.370  [ 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 14.5   n/a MPO452366   diameter diameter 2.893 km 0.516 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.334   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   13926 Berners-Lee           Discovered 1986 Dec. 2 by E. Bowell at the Lowell Observatory's Anderson Mesa Station. Tim Berners-Lee (b. 1955) is the creator of a hypertext program that evolved into the World Wide Web. He founded the World Wide Web Consortium (W3C) at the Massachusetts Institute of Technology. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20040928/MPCPages.arc Last Updated: 2004-09-28 [ show close-approach data ] Alternate Designations  1986 XT = 1990 TL3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-07 09:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin