+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   173770 (2001 RQ149) Classification: Main-belt Asteroid          SPK-ID: 2173770 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06982742595719711 5.1002e-08   a 2.810868717776491 2.3096e-08 au q 2.614592990510551 1.5128e-07 au i 3.97876786317827 7.2842e-06 deg node 336.3177510995919 6.2422e-05 deg peri 134.9712697070938 8.1515e-05 deg M 233.131467609799 5.2539e-05 deg tp 2459607.111564514739 (2022-Jan-27.61156451) 0.00025368 TDB period 1721.31070732062 4.71 2.1216e-05 5.809e-08 d yr n .209142950467306 2.5777e-09 deg/d Q 3.00714444504243 2.4709e-08 au   Orbit Determination Parameters    # obs. used (total)      375      data-arc span      7086 days (19.40 yr)      first obs. used      2001-05-24      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59473      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 10:17:39   Additional Information  Earth MOID = 1.633 au   Jupiter MOID = 2.05682 au   T_jup = 3.314  [ hide covariance matrix ] Orbital Elements at Epoch 2457562.5 (2016-Jun-23.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06798410893737655 4.9585e-08   q 2.62119203122383 1.4703e-07 au tp 2457874.696920400714 (2017-May-01.19692040) 0.00025896 TDB node 336.5803122136718 6.2448e-05 deg peri 132.7572032624686 8.3156e-05 deg i 3.976594262566616 7.2839e-06 deg   Orbit Determination Parameters    # obs. used (total)      375      data-arc span      7086 days (19.40 yr)      first obs. used      2001-05-24      last obs. used      2020-10-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59473      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 10:17:39   Additional Information  Jupiter MOID = 2.05682 au   T_jup = 3.314  Orbit Covariance (6×6)   e q tp node peri i e 2.458688935499033E-15 -7.218599627806218E-15 4.706326924879362E-12 -6.461597961008785E-15 1.09644686773264E-12 -5.139346561161285E-17 q -7.218599627806218E-15 2.161796459327285E-14 -1.160981350935456E-11 2.080549437331718E-14 -2.778205233179899E-12 1.520717119724568E-15 tp 4.706326924879362E-12 -1.160981350935456E-11 6.706137093969094E-8 -1.55338983904877E-11 1.422058345605991E-8 9.909004738192511E-12 node -6.461597961008785E-15 2.080549437331718E-14 -1.55338983904877E-11 3.899729496663716E-9 -3.893700534615244E-9 1.155289395046972E-10 peri 1.09644686773264E-12 -2.778205233179899E-12 1.422058345605991E-8 -3.893700534615244E-9 6.914980764536888E-9 -1.133145710261311E-10 i -5.139346561161285E-17 1.520717119724568E-15 9.909004738192511E-12 1.155289395046972E-10 -1.133145710261311E-10 5.305578137331157E-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 15.8   n/a MPO439994   173770 (2001 RQ149)          Discovered 2001-Sep-11 by LONEOS at Anderson Mesa Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ show close-approach data ] Alternate Designations  2001 RQ149 = 2003 AC32  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-15 15:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin