+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   564 Dudu (A905 JD) Classification: Main-belt Asteroid          SPK-ID: 2000564 [ 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 43 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .277406127484201 3.3776e-08   a 2.745543829564291 8.7676e-09 au q 1.983913147966718 9.4025e-08 au i 17.99177373237836 4.3643e-06 deg node 70.76109222377353 1.0908e-05 deg peri 214.8453465185551 1.2959e-05 deg M 50.10446898931703 7.8028e-06 deg tp 2458769.232310472611 (2019-Oct-12.73231047) 3.547e-05 TDB period 1661.655535110279 4.55 7.9594e-06 2.179e-08 d yr n .2166514012039853 1.0378e-09 deg/d Q 3.507174511161864 1.12e-08 au   Orbit Determination Parameters    # obs. used (total)      2886      data-arc span      42195 days (115.52 yr)      first obs. used      1905-05-09      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40273      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:54:29   Additional Information  Earth MOID = .99155 au   Jupiter MOID = 1.72672 au   T_jup = 3.223  [ show covariance matrix ] [ 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 10.3   n/a MPO492755 IRAS observations used: 29 diameter diameter 52.010 km 1.385 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 8.882 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Barucci, M.A.; Di Martino, M.; Dotto, E.; Fulchignoni, M.; et al. (1994) Icarus 109, 267-273.] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.050   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.731   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.37 deg. U-B UB 0.312   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.37 deg. Tholen spectral type spec_T CDX:   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices SMASSII spectral type spec_B Xc   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 564 Dudu (A905 JD)          Discovered 1905-May-09 by Gotz, P. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 23:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin