+ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1567331600895236 5.698e-08   a 3.130995206774015 4.4119e-08 au q 2.640264433791172 1.9297e-07 au i 1.995756994148154 6.7577e-06 deg node 141.7210558864845 0.0002206 deg peri 159.3736139178055 0.00022223 deg M 15.24018776982506 2.7513e-05 deg tp 2458914.833731890082 (2020-Mar-06.33373189) 0.00015429 TDB period 2023.587700187793 5.54 4.2771e-05 1.171e-07 d yr n .1779018522234501 3.7602e-09 deg/d Q 3.621725979756858 5.1033e-08 au   Orbit Determination Parameters    # obs. used (total)      154      data-arc span      7567 days (20.72 yr)      first obs. used      1998-09-13      last obs. used      2019-06-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57246      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 12:49:33   Additional Information  Earth MOID = 1.62488 au   Jupiter MOID = 1.60702 au   T_jup = 3.193  [ hide covariance matrix ] Orbital Elements at Epoch 2456887.5 (2014-Aug-18.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1569798704198735 5.7177e-08   q 2.639507483893975 1.9353e-07 au tp 2456898.030940379918 (2014-Aug-28.53094038) 0.00015345 TDB node 141.7992002884181 0.000221 deg peri 160.4193873617292 0.00022263 deg i 1.994174677947665 6.7538e-06 deg   Orbit Determination Parameters    # obs. used (total)      154      data-arc span      7567 days (20.72 yr)      first obs. used      1998-09-13      last obs. used      2019-06-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57246      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 12:49:33   Additional Information  Jupiter MOID = 1.60702 au   T_jup = 3.193  Orbit Covariance (6×6)   e q tp node peri i e 3.269187504723472E-15 -1.088419946051372E-14 1.429776741416896E-12 -2.61728156810433E-14 3.983284335587605E-13 -5.852124153545867E-16 q -1.088419946051372E-14 3.745206583437558E-14 -5.113849005639725E-12 9.379663245350816E-14 -1.393443149935628E-12 2.544358393108827E-15 tp 1.429776741416896E-12 -5.113849005639725E-12 2.35467910975387E-8 -2.070571204616544E-11 4.222179953950883E-9 2.935970608002323E-12 node -2.61728156810433E-14 9.379663245350816E-14 -2.070571204616544E-11 4.883901755540289E-8 -4.881364443278359E-8 5.531190650846229E-10 peri 3.983284335587605E-13 -1.393443149935628E-12 4.222179953950883E-9 -4.881364443278359E-8 4.956473376177745E-8 -5.522871836873269E-10 i -5.852124153545867E-16 2.544358393108827E-15 2.935970608002323E-12 5.531190650846229E-10 -5.522871836873269E-10 4.56144166250549E-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 ] 2020-Aug-08 14:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin