+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266720 (2009 RJ) Classification: Main-belt Asteroid          SPK-ID: 2266720 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1754974050680775 6.731e-08   a 2.402782027893198 1.8513e-08 au q 1.981100017053728 1.6665e-07 au i 2.108246727832586 7.1799e-06 deg node 317.3995723019462 0.00016546 deg peri 14.98020868032392 0.00016628 deg M 12.78655076753438 1.8498e-05 deg tp 2459152.180670885685 (2020-Oct-29.68067089) 6.9744e-05 TDB period 1360.410543656546 3.72 1.5722e-05 4.304e-08 d yr n .2646259996136041 3.0583e-09 deg/d Q 2.824464038732667 2.1761e-08 au   Orbit Determination Parameters    # obs. used (total)      216      data-arc span      7969 days (21.82 yr)      first obs. used      1998-09-26      last obs. used      2020-07-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56894      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:23:50   Additional Information  Earth MOID = .968789 au   Jupiter MOID = 2.52991 au   T_jup = 3.503  [ show covariance matrix ] [ 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 17.19   n/a E2021B55   266720 (2009 RJ)          Discovered 2009-Sep-09 by La Sagra at La Sagra Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2082-Nov-18 16:33 00:01 Amphi 0.0170469780023237 0.0170339242630048 0.0170600449282034 3.7050485825526 3.70504849153367 2481817.189715799 1.0273812442882 993.301638979429 58.8748502993047 -49.1735978828194 32798.3368589788 T 13 CATAB v2.0f-lin.ifort 2020-Nov-11 22:23:51 2020-Nov-11 22:23 Alternate Designations  2009 RJ = 1998 SX150 = 2000 BR48  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-11 23:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin