+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212586 (2006 SD161) Classification: Main-belt Asteroid          SPK-ID: 2212586 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09365359231710492 6.4632e-08   a 2.907109218123772 2.8362e-08 au q 2.634847996588311 1.9178e-07 au i 3.262260532844842 5.6745e-06 deg node 91.44631571707623 0.00013192 deg peri 256.5049106648607 0.00013679 deg M 302.4529613410164 4.0513e-05 deg tp 2459289.908264168452 (2021-Mar-16.40826417) 0.0002055 TDB period 1810.466316399728 4.96 2.6495e-05 7.254e-08 d yr n .1988437988263111 2.9099e-09 deg/d Q 3.179370439659233 3.1019e-08 au   Orbit Determination Parameters    # obs. used (total)      241      data-arc span      7348 days (20.12 yr)      first obs. used      1999-03-20      last obs. used      2019-05-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65004      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 02:47:44   Additional Information  Earth MOID = 1.63045 au   Jupiter MOID = 2.19226 au   T_jup = 3.276  [ hide covariance matrix ] Orbital Elements at Epoch 2457012.5 (2014-Dec-21.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09424127411954988 6.4921e-08   q 2.629883988346055 1.9222e-07 au tp 2457489.477894626370 (2016-Apr-10.97789463) 0.0001937 TDB node 91.4545536915944 0.00013196 deg peri 258.0640753328371 0.00013671 deg i 3.262924177397247 5.6776e-06 deg   Orbit Determination Parameters    # obs. used (total)      241      data-arc span      7348 days (20.12 yr)      first obs. used      1999-03-20      last obs. used      2019-05-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .65004      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 02:47:44   Additional Information  Jupiter MOID = 2.19226 au   T_jup = 3.276  Orbit Covariance (6×6)   e q tp node peri i e 4.214768810941902E-15 -1.236922888155546E-14 3.931250280463239E-12 -1.773563063049107E-14 7.547096692533558E-13 2.069893249030161E-15 q -1.236922888155546E-14 3.69479245694167E-14 -9.979745470216339E-12 5.529566658758313E-14 -1.961081371436526E-12 -5.611522958819519E-15 tp 3.931250280463239E-12 -9.979745470216339E-12 3.752145931386245E-8 1.071864118386319E-11 7.011924159091415E-9 2.740504434478571E-12 node -1.773563063049107E-14 5.529566658758313E-14 1.071864118386319E-11 1.741398255482402E-8 -1.738325427341727E-8 -1.404475696998896E-10 peri 7.547096692533558E-13 -1.961081371436526E-12 7.011924159091415E-9 -1.738325427341727E-8 1.868924847646405E-8 1.407095384854931E-10 i 2.069893249030161E-15 -5.611522958819519E-15 2.740504434478571E-12 -1.404475696998896E-10 1.407095384854931E-10 3.223471370398984E-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 16.1   n/a MPO437021   212586 (2006 SD161)          Discovered 2006-Sep-23 by Spacewatch at Kitt Peak Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-12 17:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin