+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   266845 (2009 UW43) Classification: Main-belt Asteroid          SPK-ID: 2266845 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09212683850249914 5.1391e-08   a 2.667945084057231 2.0981e-08 au q 2.422155738164754 1.4098e-07 au i 1.892354164936316 4.9984e-06 deg node 36.26916178352422 0.00018241 deg peri 299.8162103406867 0.00018451 deg M 203.3230033195792 2.8696e-05 deg tp 2459693.233983077485 (2022-Apr-23.73398308) 0.00012816 TDB period 1591.709307630983 4.36 1.8776e-05 5.141e-08 d yr n .2261719512941752 2.668e-09 deg/d Q 2.913734429949708 2.2914e-08 au   Orbit Determination Parameters    # obs. used (total)      165      data-arc span      9450 days (25.87 yr)      first obs. used      1994-03-10      last obs. used      2020-01-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59915      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 12:50:10   Additional Information  Earth MOID = 1.41316 au   Jupiter MOID = 2.39097 au   T_jup = 3.376  [ hide covariance matrix ] Orbital Elements at Epoch 2457270.5 (2015-Sep-05.0) TDB Reference: JPL 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09082313844025268 5.1515e-08   q 2.428108514957183 1.4107e-07 au tp 2456503.528148360712 (2013-Jul-30.02814836) 0.00012835 TDB node 36.30367270696171 0.00018252 deg peri 298.8999873359431 0.00018467 deg i 1.892409104304305 4.9923e-06 deg   Orbit Determination Parameters    # obs. used (total)      165      data-arc span      9450 days (25.87 yr)      first obs. used      1994-03-10      last obs. used      2020-01-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .59915      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 12:50:10   Additional Information  Jupiter MOID = 2.39097 au   T_jup = 3.376  Orbit Covariance (6×6)   e q tp node peri i e 2.653790830648363E-15 -7.201584067509663E-15 -6.710024143427794E-13 3.885994833664213E-15 -1.996242540653814E-13 -7.059030427824654E-16 q -7.201584067509663E-15 1.990077575015485E-14 1.566593288840024E-12 -1.079460756267557E-14 5.215539193662884E-13 2.062689406570457E-15 tp -6.710024143427794E-13 1.566593288840024E-12 1.647390822314305E-8 5.645504134975203E-11 3.651650000549984E-9 4.50167698942036E-13 node 3.885994833664213E-15 -1.079460756267557E-14 5.645504134975203E-11 3.331266004295325E-8 -3.328121778116108E-8 -1.530947888202833E-11 peri -1.996242540653814E-13 5.215539193662884E-13 3.651650000549984E-9 -3.328121778116108E-8 3.410395671711538E-8 1.543076054041103E-11 i -7.059030427824654E-16 2.062689406570457E-15 4.50167698942036E-13 -1.530947888202833E-11 1.543076054041103E-11 2.492287818247569E-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 16.9   n/a MPO418415   266845 (2009 UW43)          Discovered 2009-Oct-18 by Mt. Lemmon Survey at Mount Lemmon Reference: 20110218/Numbers.arc Last Updated: 2011-02-22 Alternate Designations  2009 UW43 = 2003 GK28 = 2005 WH163  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Sep-29 21:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin