+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   22874 Haydeephelps (1999 RO197) Classification: Main-belt Asteroid          SPK-ID: 2022874 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08016443090927944 1.5154e-08   a 2.27484463684788 7.641e-09 au q 2.092483011127943 3.6105e-08 au i 5.999320896537293 1.2852e-06 deg node 295.8282035663285 5.5012e-06 deg peri 151.6652913604403 1.6615e-05 deg M 351.2494814908179 1.7627e-05 deg tp 2459230.961923694811 (2021-Jan-16.46192369) 6.1385e-05 TDB period 1253.216311539108 3.43 6.3142e-06 1.729e-08 d yr n .2872608636555923 1.4473e-09 deg/d Q 2.457206262567817 8.2536e-09 au   Orbit Determination Parameters    # obs. used (total)      1762      data-arc span      8921 days (24.42 yr)      first obs. used      1996-10-10      last obs. used      2021-03-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46205      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:14:07   Additional Information  Earth MOID = 1.11083 au   Jupiter MOID = 2.67488 au   T_jup = 3.598  [ 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 14.42   n/a E2021B10   22874 Haydeephelps           Discovered 1999 Sept. 8 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Haydee Phelps mentored a finalist in the 2006 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition. She teaches at the Summit Middle School, Boulder, Colorado. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20061009/MPCPages.arc Last Updated: 2006-10-14 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-18 21:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin