+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11306 Akesson (1993 FF18) Classification: Main-belt Asteroid          SPK-ID: 2011306 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .142609241121913 3.9567e-08   a 3.065223190994335 1.7269e-08 au q 2.628094037857344 1.2922e-07 au i 5.874668986557376 3.7454e-06 deg node 113.6909867261097 4.4247e-05 deg peri 159.7655856247859 4.6901e-05 deg M 310.8251484246902 1.6864e-05 deg tp 2459268.251638960222 (2021-Feb-22.75163896) 9.2559e-05 TDB period 1960.16026358637 5.37 1.6565e-05 4.535e-08 d yr n .1836584521621374 1.552e-09 deg/d Q 3.502352344131326 1.9731e-08 au   Orbit Determination Parameters    # obs. used (total)      1548      data-arc span      9947 days (27.23 yr)      first obs. used      1993-03-17      last obs. used      2020-06-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53078      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 17:14:06   Additional Information  Earth MOID = 1.61273 au   Jupiter MOID = 1.62249 au   T_jup = 3.209  [ 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 13.6   n/a MPO384856   diameter diameter 8.715 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.093   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11306 Åkesson           Discovered 1993 Mar. 17 at the European Southern Observatory in the course of the Uppsala-ESO Survey of Asteroids and Comets. Sonja Åkesson (1926-1977), born in Buttle on Gotland, was well known for her characteristic poetic style describing the struggles of daily life. She was also a songwriter. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100726/MPCPages.arc Last Updated: 2010-07-28 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-21 02:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin