+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101970 (1999 RR46) Classification: Main-belt Asteroid          SPK-ID: 2101970 [ 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 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1323776845126092 5.0965e-08   a 2.624101772906954 1.9392e-08 au q 2.276729256284098 1.4068e-07 au i 9.651223882409672 5.0982e-06 deg node 139.7617118119919 2.701e-05 deg peri 230.8915819486666 3.2342e-05 deg M 276.9660628435017 2.1111e-05 deg tp 2459358.615046898009 (2021-May-24.11504690) 9.2931e-05 TDB period 1552.635239255227 4.25 1.7211e-05 4.712e-08 d yr n .23186386016376 2.5701e-09 deg/d Q 2.971474289529809 2.1959e-08 au   Orbit Determination Parameters    # obs. used (total)      815      data-arc span      8595 days (23.53 yr)      first obs. used      1997-02-13      last obs. used      2020-08-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56563      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:57:27   Additional Information  Earth MOID = 1.28866 au   Jupiter MOID = 2.50951 au   T_jup = 3.371  [ hide covariance matrix ] Orbital Elements at Epoch 2456735.5 (2014-Mar-19.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1322360200345392 5.0752e-08   q 2.276830022619252 1.4012e-07 au tp 2456259.812776175471 (2012-Nov-28.31277618) 8.2859e-05 TDB node 139.8031977542323 2.7033e-05 deg peri 231.7811953617548 3.2447e-05 deg i 9.646953994345768 5.096e-06 deg   Orbit Determination Parameters    # obs. used (total)      815      data-arc span      8595 days (23.53 yr)      first obs. used      1997-02-13      last obs. used      2020-08-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56563      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:57:27   Additional Information  Jupiter MOID = 2.50951 au   T_jup = 3.371  Orbit Covariance (6×6)   e q tp node peri i e 2.575812345363638E-15 -7.065449006484898E-15 -1.30433076972402E-12 -5.510265674610365E-16 -2.730623685052477E-13 3.775321793401375E-15 q -7.065449006484898E-15 1.963310739738643E-14 3.577857491550262E-12 2.838007966769575E-16 7.649036552251156E-13 -9.741007370763128E-15 tp -1.30433076972402E-12 3.577857491550262E-12 6.865536540899583E-9 -1.125181484692282E-11 1.508564447898069E-9 8.281112084763377E-13 node -5.510265674610365E-16 2.838007966769575E-16 -1.125181484692282E-11 7.307821503017845E-10 -7.2232985970177E-10 3.038689423209795E-11 peri -2.730623685052477E-13 7.649036552251156E-13 1.508564447898069E-9 -7.2232985970177E-10 1.052800260827076E-9 -2.970853751307805E-11 i 3.775321793401375E-15 -9.741007370763128E-15 8.281112084763377E-13 3.038689423209795E-11 -2.970853751307805E-11 2.596871823904257E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.9   n/a MPO436477   101970 (1999 RR46)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1999 RR46 = 2004 VK73  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-25 02:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin