+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1435333459644283 3.4117e-08   a 3.068296327699908 1.4695e-08 au q 2.627893489374772 1.0952e-07 au i 5.873750049104725 3.7151e-06 deg node 113.6914549973575 4.0419e-05 deg peri 159.7712142097367 4.2983e-05 deg M 23.51453922486035 1.4628e-05 deg tp 2459268.273334251352 (2021-Feb-22.77333425) 7.9683e-05 TDB period 1963.108833564114 5.37 1.4102e-05 3.861e-08 d yr n .1833825989904001 1.3174e-09 deg/d Q 3.508699166025044 1.6804e-08 au   Orbit Determination Parameters    # obs. used (total)      1681      data-arc span      10325 days (28.27 yr)      first obs. used      1993-03-17      last obs. used      2021-06-23      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52034      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 02:40:30   Additional Information  Earth MOID = 1.61238 au   Jupiter MOID = 1.6145 au   T_jup = 3.208  [ 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 13.64   n/a MPCxxxxx   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 ] 2021-Jul-29 23:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin