+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   305670 (2009 BL90) Classification: Main-belt Asteroid          SPK-ID: 2305670 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08924240894124143 4.12e-08   a 2.28424509917635 1.6414e-08 au q 2.080393563913628 9.3323e-08 au i 6.7522951622522 5.4028e-06 deg node 134.0483552288006 3.9413e-05 deg peri 272.2138719359875 5.0112e-05 deg M 179.65129594365 3.1797e-05 deg tp 2458371.225210247975 (2018-Sep-09.72521025) 0.00010946 TDB period 1260.992430479243 3.45 1.3592e-05 3.721e-08 d yr n .2854894219017487 3.0772e-09 deg/d Q 2.488096634439072 1.7879e-08 au   Orbit Determination Parameters    # obs. used (total)      254      data-arc span      6684 days (18.30 yr)      first obs. used      2002-01-08      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61767      source      ORB      producer      Otto Matic      solution date      2020-May-21 20:00:46   Additional Information  Earth MOID = 1.10271 au   Jupiter MOID = 2.78967 au   T_jup = 3.589  [ hide covariance matrix ] Orbital Elements at Epoch 2457334.5 (2015-Nov-08.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08831226210991774 4.1066e-08   q 2.082985079448081 9.2876e-08 au tp 2457109.927339325530 (2015-Mar-28.42733933) 0.00010843 TDB node 134.0852705008612 3.9383e-05 deg peri 272.2668281856023 5.0344e-05 deg i 6.753913914115471 5.4047e-06 deg   Orbit Determination Parameters    # obs. used (total)      254      data-arc span      6684 days (18.30 yr)      first obs. used      2002-01-08      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61767      source      ORB      producer      Otto Matic      solution date      2020-May-21 20:00:46   Additional Information  Jupiter MOID = 2.78967 au   T_jup = 3.589  Orbit Covariance (6×6)   e q tp node peri i e 1.686427422265243E-15 -3.764821086170294E-15 -9.881911635487476E-13 -3.465579538395797E-15 -2.903950173897422E-13 1.308090342889967E-15 q -3.764821086170294E-15 8.626028667100367E-15 2.45925792188226E-12 8.924744503478025E-15 7.280537964931723E-13 -2.446891443048359E-15 tp -9.881911635487476E-13 2.45925792188226E-12 1.175666730742818E-8 -3.020089179573415E-11 3.41865965793403E-9 -3.606046463620995E-12 node -3.465579538395797E-15 8.924744503478025E-15 -3.020089179573415E-11 1.55102240329805E-9 -1.548283740835185E-9 5.564676313750089E-11 peri -2.903950173897422E-13 7.280537964931723E-13 3.41865965793403E-9 -1.548283740835185E-9 2.5345457260636E-9 -5.620986766961458E-11 i 1.308090342889967E-15 -2.446891443048359E-15 -3.606046463620995E-12 5.564676313750089E-11 -5.620986766961458E-11 2.921131013416682E-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 17.1   n/a MPO471209   305670 (2009 BL90)          Discovered 2009-Jan-25 by Spacewatch at Kitt Peak Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 Alternate Designations  2009 BL90 = 2002 CP280  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-16 15:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin