+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   390083 (2012 UW140) Classification: Main-belt Asteroid          SPK-ID: 2390083 [ 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 .1216278053459753 5.571e-08   a 2.644936487890519 2.4558e-08 au q 2.323238667588904 1.5957e-07 au i 4.440364366625734 7.6227e-06 deg node 186.9389735452824 8.597e-05 deg peri 232.8576235279737 9.4315e-05 deg M 255.3703581656709 4.1133e-05 deg tp 2459457.139563839738 (2021-Aug-30.63956384) 0.00018279 TDB period 1571.163200984686 4.30 2.1882e-05 5.991e-08 d yr n .2291296026882371 3.1912e-09 deg/d Q 2.966634308192134 2.7545e-08 au   Orbit Determination Parameters    # obs. used (total)      131      data-arc span      9073 days (24.84 yr)      first obs. used      1995-12-14      last obs. used      2020-10-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64441      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 16:44:00   Additional Information  Earth MOID = 1.33872 au   Jupiter MOID = 2.35057 au   T_jup = 3.378  [ hide covariance matrix ] Orbital Elements at Epoch 2457731.5 (2016-Dec-09.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1237908583507445 5.6185e-08   q 2.315810575469586 1.6126e-07 au tp 2457884.052743379051 (2017-May-10.55274338) 0.00016741 TDB node 187.1256619052292 8.5868e-05 deg peri 232.1310592219231 9.3848e-05 deg i 4.444049390272193 7.6217e-06 deg   Orbit Determination Parameters    # obs. used (total)      131      data-arc span      9073 days (24.84 yr)      first obs. used      1995-12-14      last obs. used      2020-10-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64441      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 16:44:00   Additional Information  Jupiter MOID = 2.35057 au   T_jup = 3.378  Orbit Covariance (6×6)   e q tp node peri i e 3.156743045171499E-15 -9.002634745189589E-15 -2.59116990997755E-12 1.447553046301048E-14 -4.848099736331387E-13 -9.538356267635722E-16 q -9.002634745189589E-15 2.600336118652505E-14 8.464438169288195E-12 -4.18469945766213E-14 1.616943361710552E-12 3.576208470041711E-15 tp -2.59116990997755E-12 8.464438169288195E-12 2.802688872428276E-8 -4.45693336713184E-11 6.386956545236116E-9 9.112113085959321E-12 node 1.447553046301048E-14 -4.18469945766213E-14 -4.45693336713184E-11 7.373245072855906E-9 -7.359997567671389E-9 -3.088033033434327E-10 peri -4.848099736331387E-13 1.616943361710552E-12 6.386956545236116E-9 -7.359997567671389E-9 8.807496550291514E-9 3.098788894309389E-10 i -9.538356267635722E-16 3.576208470041711E-15 9.112113085959321E-12 -3.088033033434327E-10 3.098788894309389E-10 5.808978648616283E-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 17.2   n/a MPO434435   390083 (2012 UW140)          Discovered 2010-Mar-13 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2014-03-21 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 16:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin