+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101154 (1998 RE74) Classification: Main-belt Asteroid          SPK-ID: 2101154 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1580516248865079 6.8491e-08   a 2.320321939330878 9.2455e-09 au q 1.953591286559819 1.6371e-07 au i 3.966268014789758 7.2644e-06 deg node 308.6840047875567 7.1286e-05 deg peri 87.57379515651307 7.8551e-05 deg M 28.41534724505561 3.3194e-05 deg tp 2458898.600685272525 (2020-Feb-19.10068527) 0.00011869 TDB period 1290.983811865058 3.53 7.7161e-06 2.113e-08 d yr n .2788570985099459 1.6667e-09 deg/d Q 2.687052592101936 1.0707e-08 au   Orbit Determination Parameters    # obs. used (total)      592      data-arc span      10101 days (27.66 yr)      first obs. used      1993-03-21      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58965      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:28:51   Additional Information  Earth MOID = .965318 au   Jupiter MOID = 2.73968 au   T_jup = 3.558  [ hide covariance matrix ] Orbital Elements at Epoch 2457590.5 (2016-Jul-21.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1587088028218795 6.9495e-08   q 1.952005312698429 1.6646e-07 au tp 2457605.360715450417 (2016-Aug-04.86071545) 0.00011303 TDB node 308.8385773373761 7.1312e-05 deg peri 86.89732770341966 7.8412e-05 deg i 3.9644128195142 7.2693e-06 deg   Orbit Determination Parameters    # obs. used (total)      592      data-arc span      10101 days (27.66 yr)      first obs. used      1993-03-21      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58965      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:28:51   Additional Information  Jupiter MOID = 2.73968 au   T_jup = 3.558  Orbit Covariance (6×6)   e q tp node peri i e 4.829580672799811E-15 -1.156009723423886E-14 -6.566597020317805E-12 3.871358136451871E-14 -1.831151047614234E-12 -1.069846007742101E-14 q -1.156009723423886E-14 2.770930695126393E-14 1.574626737850656E-11 -9.300250946651238E-14 4.390406941875646E-12 2.57562356319961E-14 tp -6.566597020317805E-12 1.574626737850656E-11 1.277622790887877E-8 -6.449618593477637E-11 3.703533773886955E-9 1.862323467247601E-11 node 3.871358136451871E-14 -9.300250946651238E-14 -6.449618593477637E-11 5.085391781808672E-9 -5.091769896586759E-9 3.572450325044046E-10 peri -1.831151047614234E-12 4.390406941875646E-12 3.703533773886955E-9 -5.091769896586759E-9 6.148418520495523E-9 -3.51325359890622E-10 i -1.069846007742101E-14 2.57562356319961E-14 1.862323467247601E-11 3.572450325044046E-10 -3.51325359890622E-10 5.284222934971014E-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 15.7   n/a MPO449612   101154 (1998 RE74)          Discovered 1998-Sep-14 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1998 RE74 = 1993 FV29  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 10:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin