+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   392085 (2009 DW64) Classification: Main-belt Asteroid          SPK-ID: 2392085 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1022937524481531 4.9503e-08   a 2.945127309492764 4.5555e-08 au q 2.643859185567216 1.5344e-07 au i 12.0942624704674 7.8901e-06 deg node 178.6681579662967 2.8368e-05 deg peri 298.5043900614046 6.2115e-05 deg M 174.2095577979634 4.8162e-05 deg tp 2458307.145120749170 (2018-Jul-07.64512075) 0.00025397 TDB period 1846.097083279885 5.05 4.2833e-05 1.173e-07 d yr n .1950059957629112 4.5245e-09 deg/d Q 3.246395433418312 5.0215e-08 au   Orbit Determination Parameters    # obs. used (total)      168      data-arc span      3737 days (10.23 yr)      first obs. used      2009-01-30      last obs. used      2019-04-25      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55067      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 11:29:26   Additional Information  Earth MOID = 1.68378 au   Jupiter MOID = 1.87001 au   T_jup = 3.230  [ hide covariance matrix ] Orbital Elements at Epoch 2457490.5 (2016-Apr-12.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1044817498574827 4.9551e-08   q 2.633599983407119 1.5404e-07 au tp 2458304.455862299572 (2018-Jul-04.95586230) 0.00024596 TDB node 178.8032896629086 2.8385e-05 deg peri 297.5517608579036 6.069e-05 deg i 12.09480327642198 7.8935e-06 deg   Orbit Determination Parameters    # obs. used (total)      168      data-arc span      3737 days (10.23 yr)      first obs. used      2009-01-30      last obs. used      2019-04-25      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .55067      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 11:29:26   Additional Information  Jupiter MOID = 1.87001 au   T_jup = 3.230  Orbit Covariance (6×6)   e q tp node peri i e 2.455298111021022E-15 -7.348506971512117E-15 8.745728791587571E-13 1.128572529952437E-14 1.606731062184313E-13 -3.69143891971898E-15 q -7.348506971512117E-15 2.372846179872898E-14 -6.547435184198199E-12 -3.471381210174874E-14 -1.477827862758217E-12 1.115607605798072E-14 tp 8.745728791587571E-13 -6.547435184198199E-12 6.049502712185602E-8 -8.105705287552991E-12 1.31971021662982E-8 4.779551126653249E-11 node 1.128572529952437E-14 -3.471381210174874E-14 -8.105705287552991E-12 8.056906582973958E-10 -7.886755285157811E-10 4.694488959500481E-11 peri 1.606731062184313E-13 -1.477827862758217E-12 1.31971021662982E-8 -7.886755285157811E-10 3.683292487429541E-9 -3.580302052468584E-11 i -3.69143891971898E-15 1.115607605798072E-14 4.779551126653249E-11 4.694488959500481E-11 -3.580302052468584E-11 6.230715202906897E-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 16.62   n/a MPCxxxxx   392085 (2009 DW64)          Discovered 2009-Jan-30 by Mt. Lemmon Survey at Mount Lemmon Reference: Last Updated: 2014-04-17 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jun-12 13:15 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin