+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   14339 Knorre (1983 GU) Classification: Main-belt Asteroid          SPK-ID: 2014339 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1746643693069251 3.7221e-08   a 2.60054458181291 1.1285e-08 au q 2.146322102576017 9.6299e-08 au i 14.4023947386726 4.1656e-06 deg node 115.7747261216776 1.3889e-05 deg peri 177.2477987050665 1.7352e-05 deg M 275.7869411660763 1.2355e-05 deg tp 2459558.820638674073 (2021-Dec-10.32063867) 5.3452e-05 TDB period 1531.774664272173 4.19 9.9704e-06 2.73e-08 d yr n .2350215135403451 1.5298e-09 deg/d Q 3.054767061049803 1.3256e-08 au   Orbit Determination Parameters    # obs. used (total)      2355      data-arc span      24337 days (66.63 yr)      first obs. used      1954-06-02      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4147      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:17:29   Additional Information  Earth MOID = 1.12837 au   Jupiter MOID = 2.15944 au   T_jup = 3.349  [ hide covariance matrix ] Orbital Elements at Epoch 2457145.5 (2015-May-03.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1759072568437821 3.7308e-08   q 2.142439320651621 9.6655e-08 au tp 2456492.971856773810 (2013-Jul-19.47185677) 4.8404e-05 TDB node 115.8653757155384 1.3869e-05 deg peri 176.8350958544391 1.7268e-05 deg i 14.41578375962965 4.1692e-06 deg   Orbit Determination Parameters    # obs. used (total)      2355      data-arc span      24337 days (66.63 yr)      first obs. used      1954-06-02      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4147      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:17:29   Additional Information  Jupiter MOID = 2.15944 au   T_jup = 3.349  Orbit Covariance (6×6)   e q tp node peri i e 1.391911123116746E-15 -3.589755999657093E-15 -3.061174332515166E-13 -6.141066512572597E-15 -4.605772443917936E-14 1.158961553741284E-15 q -3.589755999657093E-15 9.342246398155248E-15 8.122350857167971E-13 1.510155447874364E-14 1.30788683506484E-13 -2.71321165580821E-15 tp -3.061174332515166E-13 8.122350857167971E-13 2.342967794960127E-9 -2.781699568110751E-12 5.082355258302015E-10 -6.550448452820975E-13 node -6.141066512572597E-15 1.510155447874364E-14 -2.781699568110751E-12 1.923613904932388E-10 -1.866073369109455E-10 -5.072993998706382E-12 peri -4.605772443917936E-14 1.30788683506484E-13 5.082355258302015E-10 -1.866073369109455E-10 2.981684725606592E-10 4.785238978622314E-12 i 1.158961553741284E-15 -2.71321165580821E-15 -6.550448452820975E-13 -5.072993998706382E-12 4.785238978622314E-12 1.738201533293058E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.44   n/a E2021B10   rotation period rot_per 3.795 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Marchini, A.; Papini, R.; Salvaggio, F. (2017) Minor Planet Bull. 44, 349-350.] [Ditteon, R.; Trent, L. (2018) Minor Planet Bull. 45, 328-329.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] 14339 Knorre           Discovered 1983 Apr. 10 by L. I. Chernykh at the Crimean Astrophysical Observatory. Ernest Khristov Knorre (1759-1810) was the first astronomer at Tartu University. His son Karl Khristov Knorre (1801-1883) was the first director of the naval Nikolaev Observatory. Victor Karlovich Knorre (1840-1919) worked in Nikolaev, Pulkovo and Berlin and discovered (158) Koronis and three other minor planets. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100330/MPCPages.arc Last Updated: 2010-04-05 Alternate Designations  1983 GU = 1991 DN  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-01 17:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin