+ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09212683952303266 5.1338e-08   a 2.667945085576471 2.0515e-08 au q 2.422155736821304 1.4096e-07 au i 1.892352406969029 4.8584e-06 deg node 36.26911032464458 0.00017881 deg peri 299.8162585272382 0.00018076 deg M 203.3230059009506 2.7866e-05 deg tp 2459693.233972255878 (2022-Apr-23.73397226) 0.00012493 TDB period 1591.709308990561 4.36 1.8359e-05 5.026e-08 d yr n .2261719511009876 2.6088e-09 deg/d Q 2.913734434331638 2.2405e-08 au   Orbit Determination Parameters    # obs. used (total)      180      data-arc span      9509 days (26.03 yr)      first obs. used      1994-03-10      last obs. used      2020-03-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62605      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:23:09   Additional Information  Earth MOID = 1.41316 au   Jupiter MOID = 2.39097 au   T_jup = 3.376  [ hide covariance matrix ] Orbital Elements at Epoch 2457365.5 (2015-Dec-09.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09080330833189018 5.1403e-08   q 2.428161676760566 1.4086e-07 au tp 2458098.750504455864 (2017-Dec-11.25050446) 0.00012358 TDB node 36.29215248164846 0.00017882 deg peri 299.1149916707922 0.00018082 deg i 1.892640423700751 4.8546e-06 deg   Orbit Determination Parameters    # obs. used (total)      180      data-arc span      9509 days (26.03 yr)      first obs. used      1994-03-10      last obs. used      2020-03-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62605      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 22:23:09   Additional Information  Jupiter MOID = 2.39097 au   T_jup = 3.376  Orbit Covariance (6×6)   e q tp node peri i e 2.64224851438775E-15 -7.177826265997475E-15 -6.824472633718346E-13 8.516919695404728E-15 -1.782558865647766E-13 -5.738330505166555E-16 q -7.177826265997475E-15 1.984070869805753E-14 2.059666343924496E-12 -2.323120460052189E-14 4.92654295919983E-13 1.712016389853087E-15 tp -6.824472633718346E-13 2.059666343924496E-12 1.527091537867925E-8 4.530718744918543E-11 3.358261764030141E-9 4.712313308094151E-13 node 8.516919695404728E-15 -2.323120460052189E-14 4.530718744918543E-11 3.197573406305601E-8 -3.194763420777537E-8 -5.77364976605964E-11 peri -1.782558865647766E-13 4.92654295919983E-13 3.358261764030141E-9 -3.194763420777537E-8 3.269657508104267E-8 5.779841381272668E-11 i -5.738330505166555E-16 1.712016389853087E-15 4.712313308094151E-13 -5.77364976605964E-11 5.779841381272668E-11 2.356668491311354E-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 ] 2021-Jan-23 21:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin