+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   109868 (2001 RS147) Classification: Main-belt Asteroid          SPK-ID: 2109868 [ 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 .1709085775706152 4.4595e-08   a 2.441598515502001 1.1153e-08 au q 2.024308386219029 1.0832e-07 au i 5.990326576866355 4.1117e-06 deg node 69.26242680272401 4.4318e-05 deg peri 219.1880543899624 4.5869e-05 deg M 50.40788015824232 1.1386e-05 deg tp 2459005.378224781778 (2020-Jun-04.87822478) 4.4285e-05 TDB period 1393.509087429345 3.82 9.5485e-06 2.614e-08 d yr n .2583406188359378 1.7702e-09 deg/d Q 2.858888644784974 1.306e-08 au   Orbit Determination Parameters    # obs. used (total)      713      data-arc span      10032 days (27.47 yr)      first obs. used      1993-05-23      last obs. used      2020-11-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55819      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 04:33:30   Additional Information  Earth MOID = 1.01022 au   Jupiter MOID = 2.3071 au   T_jup = 3.474  [ hide covariance matrix ] Orbital Elements at Epoch 2457357.5 (2015-Dec-01.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1701253311304692 4.4609e-08   q 2.026623073564036 1.0818e-07 au tp 2457611.940057423816 (2016-Aug-11.44005742) 4.7164e-05 TDB node 69.28532337560777 4.4294e-05 deg peri 219.3023858134441 4.5856e-05 deg i 5.991448971787079 4.1118e-06 deg   Orbit Determination Parameters    # obs. used (total)      713      data-arc span      10032 days (27.47 yr)      first obs. used      1993-05-23      last obs. used      2020-11-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55819      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 04:33:30   Additional Information  Jupiter MOID = 2.3071 au   T_jup = 3.474  Orbit Covariance (6×6)   e q tp node peri i e 1.989979840118746E-15 -4.808425066788647E-15 3.668210509137717E-13 1.128857864297893E-14 5.318137233925216E-14 -1.573448989527963E-15 q -4.808425066788647E-15 1.170306416970174E-14 -1.056925378405713E-12 -2.624600977017604E-14 -1.763394343846024E-13 4.141236370216474E-15 tp 3.668210509137717E-13 -1.056925378405713E-12 2.224487952915912E-9 -1.696591750954451E-13 5.827986211371639E-10 -1.452594034349786E-12 node 1.128857864297893E-14 -2.624600977017604E-14 -1.696591750954451E-13 1.961953053060975E-9 -1.951128090239982E-9 4.278709175581344E-11 peri 5.318137233925216E-14 -1.763394343846024E-13 5.827986211371639E-10 -1.951128090239982E-9 2.102798188661117E-9 -4.291908460344554E-11 i -1.573448989527963E-15 4.141236370216474E-15 -1.452594034349786E-12 4.278709175581344E-11 -4.291908460344554E-11 1.690720203967309E-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 15.85   n/a E2021B55   109868 (2001 RS147)          Discovered 2001-Sep-10 by LONEOS at Anderson Mesa Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-03 23:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin