+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   305395 (2008 CW64) Classification: Main-belt Asteroid          SPK-ID: 2305395 [ 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 .1358153886310403 5.0957e-08   a 3.094181034195065 3.3438e-08 au q 2.673943634541069 1.6301e-07 au i 3.3149431756666 5.857e-06 deg node 198.0025169212379 0.0001092 deg peri 332.1629489327068 0.00011163 deg M 73.45723010835329 2.3775e-05 deg tp 2458594.852266347777 (2019-Apr-21.35226635) 0.00012945 TDB period 1988.002867782977 5.44 3.2225e-05 8.823e-08 d yr n .1810862578892918 2.9354e-09 deg/d Q 3.514418433849062 3.7979e-08 au   Orbit Determination Parameters    # obs. used (total)      211      data-arc span      5834 days (15.97 yr)      first obs. used      2003-04-04      last obs. used      2019-03-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .6526      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 17:54:04   Additional Information  Earth MOID = 1.68045 au   Jupiter MOID = 1.46343 au   T_jup = 3.207  [ hide covariance matrix ] Orbital Elements at Epoch 2457155.5 (2015-May-13.0) TDB Reference: JPL 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1361153861560234 5.0833e-08   q 2.671926943479287 1.6324e-07 au tp 2456603.982438140446 (2013-Nov-07.48243814) 0.00012446 TDB node 198.0445628147708 0.00010919 deg peri 331.399148040664 0.00011162 deg i 3.315124271377098 5.8587e-06 deg   Orbit Determination Parameters    # obs. used (total)      211      data-arc span      5834 days (15.97 yr)      first obs. used      2003-04-04      last obs. used      2019-03-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .6526      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 17:54:04   Additional Information  Jupiter MOID = 1.46343 au   T_jup = 3.207  Orbit Covariance (6×6)   e q tp node peri i e 2.583973069990345E-15 -8.162048548389E-15 7.128129429865646E-14 -4.025718334367146E-15 9.692399552088626E-15 2.725020567479992E-16 q -8.162048548389E-15 2.664701122536238E-14 -1.529308443588208E-13 -8.081152105776787E-15 4.487708339075193E-14 -3.46671861631412E-16 tp 7.128129429865646E-14 -1.529308443588208E-13 1.549112747905037E-8 -1.719610481240371E-11 2.92614666131668E-9 -1.058997949918263E-12 node -4.025718334367146E-15 -8.081152105776787E-15 -1.719610481240371E-11 1.192306940193968E-8 -1.190768793569525E-8 6.356659642014542E-11 peri 9.692399552088626E-15 4.487708339075193E-14 2.92614666131668E-9 -1.190768793569525E-8 1.245892653677926E-8 -6.359630978119559E-11 i 2.725020567479992E-16 -3.46671861631412E-16 -1.058997949918263E-12 6.356659642014542E-11 -6.359630978119559E-11 3.432476949843789E-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 16.1   n/a MPO471206   305395 (2008 CW64)          Discovered 2008-Feb-08 by Mt. Lemmon Survey at Mount Lemmon Reference: 20111110/Numbers.arc Last Updated: 2011-11-14 [ show close-approach data ] Alternate Designations  2008 CW64 = 2006 UY280  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-16 15:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin