+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22951 Okabekazuko (1999 TA243) Classification: Main-belt Asteroid          SPK-ID: 2022951 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1019191063329631 4.4341e-08   a 3.163468325321254 2.5676e-08 au q 2.841050460691877 1.4808e-07 au i 13.69965247968047 4.7015e-06 deg node 74.91423886902838 1.9329e-05 deg peri 274.5741975146591 2.9476e-05 deg M 323.0305047271275 2.4169e-05 deg tp 2459411.549672744463 (2021-Jul-16.04967274) 0.0001391 TDB period 2055.150648587777 5.63 2.502e-05 6.85e-08 d yr n .1751696403606123 2.1326e-09 deg/d Q 3.485886189950631 2.8293e-08 au   Orbit Determination Parameters    # obs. used (total)      1250      data-arc span      9838 days (26.93 yr)      first obs. used      1993-10-13      last obs. used      2020-09-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52015      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:15:03   Additional Information  Earth MOID = 1.87688 au   Jupiter MOID = 1.96282 au   T_jup = 3.152  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.51   n/a E2021B10   diameter diameter 13.807 km 0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.044   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   22951 Okabekazuko           Discovered 1999 Oct. 4 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station. Kazuko Okabe (b. 1972), of the Japan Aerospace Exploration Agency, is the secretary of Junichiro Kawaguchi, project manager for the Hayabusa mission. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20120506/MPCPages.arc Last Updated: 2012-05-09 Alternate Designations  1999 TA243 = 1995 AJ3 = 2000 AM100  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-20 04:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin