+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   27239 O'Dorney (1999 RW211) Classification: Main-belt Asteroid          SPK-ID: 2027239 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1089895543397421 3.1722e-08   a 2.287889360079609 6.8808e-09 au q 2.038533318345895 7.273e-08 au i 5.964961316979753 4.1547e-06 deg node 246.5275152092119 4.0112e-05 deg peri 219.8441605087103 4.6377e-05 deg M 272.0831705764434 2.2157e-05 deg tp 2459309.188515053509 (2021-Apr-04.68851505) 7.7748e-05 TDB period 1264.011295083025 3.46 5.7023e-06 1.561e-08 d yr n .284807581546456 1.2848e-09 deg/d Q 2.537245401813323 7.6308e-09 au   Orbit Determination Parameters    # obs. used (total)      1240      data-arc span      24148 days (66.11 yr)      first obs. used      1954-10-06      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52576      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 20:52:36   Additional Information  Earth MOID = 1.05936 au   Jupiter MOID = 2.58996 au   T_jup = 3.585  [ 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 15.1   n/a MPO337488   27239 O'Dorney           Discovered 1999 Sept. 8 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Evan Michael O'Dorney (b. 1993) was a finalist in the 2010 Intel Science Talent Search, a science competition for high-school seniors, for his mathematical-sciences project. He attends the Venture School, San Ramon, California, 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: 20110319/MPCPages.arc Last Updated: 2011-03-23 Alternate Designations  1999 RW211 = 1954 TH1 = 1999 UV61 = 2001 FS80  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 16:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin