+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1031718366730415 5.0358e-08   a 2.942241575386902 4.6261e-08 au q 2.638685108118453 1.5705e-07 au i 12.09090992905958 7.9635e-06 deg node 178.7583575517052 2.9253e-05 deg peri 298.0282727335504 6.1772e-05 deg M 135.6072282061013 4.7786e-05 deg tp 2458306.121512972472 (2018-Jul-06.62151297) 0.00025025 TDB period 1843.38444666081 5.05 4.3475e-05 1.19e-07 d yr n .1952929572841521 4.6059e-09 deg/d Q 3.245798042655352 5.1034e-08 au   Orbit Determination Parameters    # obs. used (total)      165      data-arc span      3737 days (10.23 yr)      first obs. used      2009-01-30      last obs. used      2019-04-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55079      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 04:42:08   Additional Information  Earth MOID = 1.67904 au   Jupiter MOID = 1.87414 au   T_jup = 3.231  [ hide covariance matrix ] Orbital Elements at Epoch 2457445.5 (2016-Feb-27.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1045228774017237 5.0347e-08   q 2.633385169054814 1.5765e-07 au tp 2458304.402209671927 (2018-Jul-04.90220967) 0.0002459 TDB node 178.8034810082845 2.9246e-05 deg peri 297.5511930329237 6.0967e-05 deg i 12.09476887843431 7.9666e-06 deg   Orbit Determination Parameters    # obs. used (total)      165      data-arc span      3737 days (10.23 yr)      first obs. used      2009-01-30      last obs. used      2019-04-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55079      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 04:42:08   Additional Information  Jupiter MOID = 1.87414 au   T_jup = 3.231  Orbit Covariance (6×6)   e q tp node peri i e 2.534783257961712E-15 -7.647503706087547E-15 8.491813286303908E-13 1.363094334924716E-14 1.661005051963815E-13 -3.765787869296381E-15 q -7.647503706087547E-15 2.485322390245644E-14 -6.447366769328526E-12 -4.341271620957269E-14 -1.497503513149519E-12 1.145390819679199E-14 tp 8.491813286303908E-13 -6.447366769328526E-12 6.046478033218627E-8 2.321781669840929E-11 1.31566791647287E-8 5.270167777966337E-11 node 1.363094334924716E-14 -4.341271620957269E-14 2.321781669840929E-11 8.553370645994844E-10 -8.304970898729606E-10 5.452137712376198E-11 peri 1.661005051963815E-13 -1.497503513149519E-12 1.31566791647287E-8 -8.304970898729606E-10 3.716996879032641E-9 -4.22290244249562E-11 i -3.765787869296381E-15 1.145390819679199E-14 5.270167777966337E-11 5.452137712376198E-11 -4.22290244249562E-11 6.346684425629664E-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 16.4   n/a MPO294776   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 ] 2020-Aug-05 00:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin