+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74709 (1999 RU151) Classification: Main-belt Asteroid          SPK-ID: 2074709 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1048960750975491 3.9356e-08   a 2.231088940855782 8.3155e-09 au q 1.997056467766462 8.8782e-08 au i 2.056410620444022 4.8407e-06 deg node 32.23089362028056 0.00010227 deg peri 295.0395809414398 0.00010443 deg M 149.8479641377714 2.0496e-05 deg tp 2458693.833607468529 (2019-Jul-29.33360747) 6.973e-05 TDB period 1217.233095964051 3.33 6.8051e-06 1.863e-08 d yr n .2957527208171079 1.6534e-09 deg/d Q 2.465121413945102 9.1877e-09 au   Orbit Determination Parameters    # obs. used (total)      733      data-arc span      8865 days (24.27 yr)      first obs. used      1996-10-11      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5233      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:58:49   Additional Information  Earth MOID = .984578 au   Jupiter MOID = 2.7958 au   T_jup = 3.634  [ hide covariance matrix ] Orbital Elements at Epoch 2457253.5 (2015-Aug-19.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .105472709127373 3.9408e-08   q 1.995230901056231 8.8959e-08 au tp 2457477.424092060563 (2016-Mar-29.92409206) 7.0793e-05 TDB node 32.26027073818411 0.00010216 deg peri 295.1759993806513 0.0001043 deg i 2.058188274827628 4.8431e-06 deg   Orbit Determination Parameters    # obs. used (total)      733      data-arc span      8865 days (24.27 yr)      first obs. used      1996-10-11      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5233      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 06:58:49   Additional Information  Jupiter MOID = 2.7958 au   T_jup = 3.634  Orbit Covariance (6×6)   e q tp node peri i e 1.55301359330381E-15 -3.493546607760505E-15 1.100994241416408E-12 -7.107265606548313E-15 3.232510117197518E-13 -1.930389336115586E-16 q -3.493546607760505E-15 7.913718549089783E-15 -2.598277204345641E-12 1.611541029852067E-14 -7.666406960032971E-13 4.609670558016867E-16 tp 1.100994241416408E-12 -2.598277204345641E-12 5.011652275114706E-9 -3.387083943165585E-12 1.495926167303391E-9 -7.47968214562544E-13 node -7.107265606548313E-15 1.611541029852067E-14 -3.387083943165585E-12 1.043754636390386E-8 -1.043139154387196E-8 -1.282663796164318E-10 peri 3.232510117197518E-13 -7.666406960032971E-13 1.495926167303391E-9 -1.043139154387196E-8 1.087843390428982E-8 1.279722322718678E-10 i -1.930389336115586E-16 4.609670558016867E-16 -7.47968214562544E-13 -1.282663796164318E-10 1.279722322718678E-10 2.345579378094972E-11 [ 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 16.2   n/a MPO344829   74709 (1999 RU151)          Discovered 1999-Sep-09 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 RU151 = 1996 TF36  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-01 21:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin