+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266231 (2006 XK15) Classification: Main-belt Asteroid          SPK-ID: 2266231 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1593208763793973 6.9171e-08   a 2.588110179015088 1.9453e-08 au q 2.175770197127965 1.8729e-07 au i 4.427880122648735 4.7644e-06 deg node 263.9208350632343 7.5235e-05 deg peri 137.0045822905734 7.7509e-05 deg M 119.4162055773615 1.8863e-05 deg tp 2458496.032334487417 (2019-Jan-12.53233449) 7.66e-05 TDB period 1520.801625763252 4.16 1.7146e-05 4.694e-08 d yr n .2367172640411435 2.6689e-09 deg/d Q 3.000450160902211 2.2552e-08 au   Orbit Determination Parameters    # obs. used (total)      537      data-arc span      9138 days (25.02 yr)      first obs. used      1995-02-25      last obs. used      2020-03-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49595      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:26:58   Additional Information  Earth MOID = 1.18675 au   Jupiter MOID = 2.40547 au   T_jup = 3.399  [ hide covariance matrix ] Orbital Elements at Epoch 2457367.5 (2015-Dec-11.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1573195376296595 6.8819e-08   q 2.182928372248919 1.859e-07 au tp 2456973.701260099088 (2014-Nov-12.20126010) 7.139e-05 TDB node 264.0976307746727 7.5332e-05 deg peri 136.8392341269106 7.7702e-05 deg i 4.42305449041075 4.756e-06 deg   Orbit Determination Parameters    # obs. used (total)      537      data-arc span      9138 days (25.02 yr)      first obs. used      1995-02-25      last obs. used      2020-03-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49595      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:26:58   Additional Information  Jupiter MOID = 2.40547 au   T_jup = 3.399  Orbit Covariance (6×6)   e q tp node peri i e 4.736048457565345E-15 -1.275479872084864E-14 -2.64140089969712E-12 -7.163314672148716E-14 -7.581268762019543E-13 -2.888783755982527E-15 q -1.275479872084864E-14 3.455959931765952E-14 7.19640628277385E-12 1.98860921958157E-13 2.069824760309307E-12 7.891723482461005E-15 tp -2.64140089969712E-12 7.19640628277385E-12 5.096569350087508E-9 5.21161487428951E-11 1.400967711958366E-9 1.586002758385009E-12 node -7.163314672148716E-14 1.98860921958157E-13 5.21161487428951E-11 5.674885412459196E-9 -5.641512502780571E-9 -1.114679646378309E-10 peri -7.581268762019543E-13 2.069824760309307E-12 1.400967711958366E-9 -5.641512502780571E-9 6.037613025552456E-9 1.116508001530874E-10 i -2.888783755982527E-15 7.891723482461005E-15 1.586002758385009E-12 -1.114679646378309E-10 1.116508001530874E-10 2.261984912655819E-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 MPO321411   266231 (2006 XK15)          Discovered 2006-Dec-10 by Spacewatch at Kitt Peak Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 11:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin