+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173734 (2001 QT241) Classification: Main-belt Asteroid          SPK-ID: 2173734 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0427289910927308 3.814e-08   a 2.863155199995986 1.5672e-08 au q 2.740815466958252 1.15e-07 au i 3.203998789289396 4.2199e-06 deg node 146.3271217561974 5.2603e-05 deg peri 239.5377444742636 7.1025e-05 deg M 286.7713032221174 4.815e-05 deg tp 2459360.451979578622 (2021-May-25.95197958) 0.00023695 TDB period 1769.561911518846 4.84 1.4529e-05 3.978e-08 d yr n .203440183503388 1.6703e-09 deg/d Q 2.985494933033721 1.6341e-08 au   Orbit Determination Parameters    # obs. used (total)      814      data-arc span      8820 days (24.15 yr)      first obs. used      1996-09-14      last obs. used      2020-11-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53329      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:08:03   Additional Information  Earth MOID = 1.74561 au   Jupiter MOID = 2.20838 au   T_jup = 3.297  [ hide covariance matrix ] Orbital Elements at Epoch 2457576.5 (2016-Jul-07.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04547336489606346 3.8289e-08   q 2.731353607448084 1.1576e-07 au tp 2457591.733962256130 (2016-Jul-22.23396226) 0.00022005 TDB node 146.4725040982354 5.2738e-05 deg peri 239.4698780794544 6.9024e-05 deg i 3.200460310767245 4.2154e-06 deg   Orbit Determination Parameters    # obs. used (total)      814      data-arc span      8820 days (24.15 yr)      first obs. used      1996-09-14      last obs. used      2020-11-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53329      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:08:03   Additional Information  Jupiter MOID = 2.20838 au   T_jup = 3.297  Orbit Covariance (6×6)   e q tp node peri i e 1.466009842977733E-15 -4.400494820962812E-15 -2.703580066683318E-12 1.120398298332389E-15 -4.783022202391263E-13 3.232521822719613E-16 q -4.400494820962812E-15 1.340101995976107E-14 7.879740929940652E-12 -3.651450536537983E-15 1.387352403567727E-12 -7.898103768158288E-16 tp -2.703580066683318E-12 7.879740929940652E-12 4.842179105233563E-8 -1.016570571121141E-11 9.797988234394571E-9 1.385369880772625E-12 node 1.120398298332389E-15 -3.651450536537983E-15 -1.016570571121141E-11 2.78133817937537E-9 -2.778751111887589E-9 -3.61060272355281E-12 peri -4.783022202391263E-13 1.387352403567727E-12 9.797988234394571E-9 -2.778751111887589E-9 4.764357696299848E-9 3.903498248029589E-12 i 3.232521822719613E-16 -7.898103768158288E-16 1.385369880772625E-12 -3.61060272355281E-12 3.903498248029589E-12 1.776927303190192E-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 15.3   n/a MPO436862   173734 (2001 QT241)          Discovered 2001-Aug-24 by LINEAR at Socorro Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 Alternate Designations  2001 QT241 = 1996 RE18  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-22 14:51 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin