+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266755 (2009 SK84) Classification: Main-belt Asteroid          SPK-ID: 2266755 [ 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 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1567331424800717 4.8433e-08   a 3.1309952251204 3.1548e-08 au q 2.64026450439718 1.5114e-07 au i 1.995755836634339 6.6916e-06 deg node 141.7213484983234 0.00016447 deg peri 159.3733255307554 0.00016651 deg M 15.24017909251365 2.3463e-05 deg tp 2458914.833779912962 (2020-Mar-06.33377991) 0.00013223 TDB period 2023.58771797392 5.54 3.0584e-05 8.373e-08 d yr n .1779018506597991 2.6888e-09 deg/d Q 3.62172594584362 3.6492e-08 au   Orbit Determination Parameters    # obs. used (total)      227      data-arc span      8073 days (22.10 yr)      first obs. used      1998-09-13      last obs. used      2020-10-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56055      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:23:40   Additional Information  Earth MOID = 1.62488 au   Jupiter MOID = 1.60702 au   T_jup = 3.193  [ hide covariance matrix ] Orbital Elements at Epoch 2457666.5 (2016-Oct-05.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1570947603246367 4.8558e-08   q 2.637590770451358 1.5228e-07 au tp 2456897.208404168254 (2014-Aug-27.70840417) 0.00014414 TDB node 141.8029903432106 0.0001648 deg peri 160.1802039404887 0.00016684 deg i 1.99437760073404 6.6888e-06 deg   Orbit Determination Parameters    # obs. used (total)      227      data-arc span      8073 days (22.10 yr)      first obs. used      1998-09-13      last obs. used      2020-10-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56055      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:23:40   Additional Information  Jupiter MOID = 1.60702 au   T_jup = 3.193  Orbit Covariance (6×6)   e q tp node peri i e 2.357870205900722E-15 -7.279677968324808E-15 2.965287503375877E-12 1.158159315447286E-14 5.603482828665311E-13 -1.10012948403344E-16 q -7.279677968324808E-15 2.318938175041486E-14 -1.121142994378111E-11 -3.812120392081392E-14 -2.055966683558321E-12 5.313912578605419E-16 tp 2.965287503375877E-12 -1.121142994378111E-11 2.077607127190697E-8 5.625696547871249E-11 3.784969990132839E-9 8.585678630001593E-13 node 1.158159315447286E-14 -3.812120392081392E-14 5.625696547871249E-11 2.71598886391688E-8 -2.713236023437001E-8 5.618840815420643E-10 peri 5.603482828665311E-13 -2.055966683558321E-12 3.784969990132839E-9 -2.713236023437001E-8 2.783485059207051E-8 -5.61365613342687E-10 i -1.10012948403344E-16 5.313912578605419E-16 8.585678630001593E-13 5.618840815420643E-10 -5.61365613342687E-10 4.473942289444256E-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 MPO437228   266755 (2009 SK84)          Discovered 2005-Dec-25 by Spacewatch at Kitt Peak Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ show close-approach data ] Alternate Designations  2009 SK84 = 2005 YZ105  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 04:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin