+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21746 Carrieshaw (1999 RZ169) Classification: Main-belt Asteroid          SPK-ID: 2021746 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1089235175062088 3.0908e-08   a 2.304766371991925 7.6979e-09 au q 2.053723111724541 7.001e-08 au i 1.322001612254764 2.9986e-06 deg node 258.6443053426639 0.00019318 deg peri 16.14337946215169 0.00019438 deg M 35.80066345272908 2.1413e-05 deg tp 2458873.405322300644 (2020-Jan-24.90532230) 7.6067e-05 TDB period 1278.023353734251 3.50 6.4029e-06 1.753e-08 d yr n .281684993429985 1.4112e-09 deg/d Q 2.555809632259308 8.5364e-09 au   Orbit Determination Parameters    # obs. used (total)      1056      data-arc span      10830 days (29.65 yr)      first obs. used      1991-03-18      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55959      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:17:45   Additional Information  Earth MOID = 1.0374 au   Jupiter MOID = 2.52684 au   T_jup = 3.580  [ 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 16.0   n/a MPO474051   21746 Carrieshaw           Discovered 1999 Sept. 9 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Carrie Elizabeth Shaw (b. 1988) was awarded second place in the 2005 Intel International Science and Engineering Fair for her medicine and health project. She attends the Career Center, Winston-Salem, North Carolina, 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: 20050822/MPCPages.arc Last Updated: 2005-08-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-21 22:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin