+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   452673 (2005 WQ146) Classification: Main-belt Asteroid          SPK-ID: 2452673 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06881576727885157 6.4386e-08   a 2.857148294671466 2.7706e-08 au q 2.660531442544187 1.8374e-07 au i 4.685611710645939 6.2635e-06 deg node 281.8228063349287 7.6067e-05 deg peri 121.2798115182618 9.8098e-05 deg M 67.03218329267553 5.8741e-05 deg tp 2458872.043043548250 (2020-Jan-23.54304355) 0.00028732 TDB period 1763.996016754394 4.83 2.5659e-05 7.025e-08 d yr n .2040820934858856 2.9685e-09 deg/d Q 3.053765146798745 2.9613e-08 au   Orbit Determination Parameters    # obs. used (total)      130      data-arc span      5995 days (16.41 yr)      first obs. used      2004-08-20      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49181      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 17:57:35   Additional Information  Earth MOID = 1.67226 au   Jupiter MOID = 2.233 au   T_jup = 3.295  [ hide covariance matrix ] Orbital Elements at Epoch 2457890.5 (2017-May-17.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06695951416252457 6.4715e-08   q 2.668144530479514 1.8386e-07 au tp 2457102.581195524220 (2015-Mar-21.08119552) 0.0002959 TDB node 281.9346900664719 7.6225e-05 deg peri 120.2591399499294 9.9368e-05 deg i 4.678305987270924 6.2573e-06 deg   Orbit Determination Parameters    # obs. used (total)      130      data-arc span      5995 days (16.41 yr)      first obs. used      2004-08-20      last obs. used      2021-01-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49181      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 17:57:35   Additional Information  Jupiter MOID = 2.233 au   T_jup = 3.295  Orbit Covariance (6×6)   e q tp node peri i e 4.188048163047047E-15 -1.177940003744804E-14 -7.766384629525391E-12 -6.244910652471507E-15 -1.821272920246079E-12 -3.428791119959E-15 q -1.177940003744804E-14 3.380384296408968E-14 2.212851532312144E-11 1.651472062720363E-14 5.245181463756896E-12 9.730959195598111E-15 tp -7.766384629525391E-12 2.212851532312144E-11 8.755943134888628E-8 1.077005768236242E-10 1.888212653781153E-8 1.801007731478606E-11 node -6.244910652471507E-15 1.651472062720363E-14 1.077005768236242E-10 5.810266312807016E-9 -5.767642685265994E-9 6.683172881099872E-11 peri -1.821272920246079E-12 5.245181463756896E-12 1.888212653781153E-8 -5.767642685265994E-9 9.874049816750952E-9 -6.260992635449391E-11 i -3.428791119959E-15 9.730959195598111E-15 1.801007731478606E-11 6.683172881099872E-11 -6.260992635449391E-11 3.915439239012671E-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 16.8   n/a MPO495257   452673 (2005 WQ146)          Discovered 2005-Nov-25 by Spacewatch at Kitt Peak Reference: Last Updated: 2016-01-04 Alternate Designations  2005 WQ146 = 2004 QH6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-14 00:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin