+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21545 Koirala (1998 QO33) Classification: Main-belt Asteroid          SPK-ID: 2021545 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .01242020534449378 3.1352e-08   a 3.035948478786659 1.533e-08 au q 2.998241375264825 9.3665e-08 au i 8.853844768978707 3.7711e-06 deg node 189.9044809045224 1.9782e-05 deg peri 45.02044372383586 0.00015631 deg M 178.4082478949275 0.00015678 deg tp 2458242.969866860176 (2018-May-04.46986686) 0.00083907 TDB period 1932.146366536553 5.29 1.4635e-05 4.007e-08 d yr n .1863212881979091 1.4113e-09 deg/d Q 3.073655582308492 1.5521e-08 au   Orbit Determination Parameters    # obs. used (total)      1802      data-arc span      10901 days (29.85 yr)      first obs. used      1991-04-10      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .4826      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:47:50   Additional Information  Earth MOID = 1.99465 au   Jupiter MOID = 1.88855 au   T_jup = 3.223  [ 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 13.62   n/a E2021B10   21545 Koirala           Discovered 1998 Aug. 17 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Pratistha Koirala (b. 1988) was awarded second place in the 2006 Intel International Science and Engineering Fair for her botany project. She attends the Edwin O. Smith High School, Storrs Mansfield, Connecticut, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20060711/MPCPages.arc Last Updated: 2006-07-17 [ show close-approach data ] Alternate Designations  1998 QO33 = 1993 SZ11  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jun-25 02:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin