+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21704 Mikkilineni (1999 RD85) Classification: Main-belt Asteroid          SPK-ID: 2021704 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .02995913589518655 3.646e-08   a 2.979454523859559 1.5024e-08 au q 2.890192640885722 1.1629e-07 au i .3218933438838437 3.3567e-06 deg node 307.124031891599 0.00070115 deg peri 158.0341591776456 0.00070448 deg M 300.6512128273439 6.8342e-05 deg tp 2459510.179827234043 (2021-Oct-22.67982723) 0.00035682 TDB period 1878.466993435378 5.14 1.4209e-05 3.89e-08 d yr n .1916456351152728 1.4496e-09 deg/d Q 3.068716406833396 1.5474e-08 au   Orbit Determination Parameters    # obs. used (total)      1362      data-arc span      10956 days (30.00 yr)      first obs. used      1991-01-12      last obs. used      2021-01-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5251      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:54:04   Additional Information  Earth MOID = 1.90689 au   Jupiter MOID = 1.95861 au   T_jup = 3.259  [ 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 14.66   n/a E2021B10   21704 Mikkilineni           Discovered 1999 Sept. 7 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Sohan Venkat Mikkilineni (b. 1989) was awarded second place in the 2005 Intel International Science and Engineering Fair for his biochemistry team project. He attends the Detroit Country Day School, Beverly Hills, Michigan, 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 [ show close-approach data ] Alternate Designations  1999 RD85 = 1992 JU = 1997 EX56  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-10 20:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin