+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   10563 Izhdubar (1993 WD) Classification: Apollo [NEO]          SPK-ID: 2010563 [ 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 73 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2662974808215008 2.0097e-07   a 1.006885713772522 2.5624e-09 au q .738754584719741 2.0167e-07 au i 63.46245398441133 3.2382e-05 deg node 56.56381705827801 6.3494e-06 deg peri 132.2042253145124 2.3434e-05 deg M 345.8884214890184 4.3117e-05 deg tp 2459014.965777830402 (2020-Jun-14.46577783) 4.423e-05 TDB period 369.0359668049904 1.01 1.4087e-06 3.857e-09 d yr n .9755146716911598 3.7238e-09 deg/d Q 1.275016842825304 3.2447e-09 au   Orbit Determination Parameters    # obs. used (total)      568      data-arc span      10476 days (28.68 yr)      first obs. used      1991-11-13      last obs. used      2020-07-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61868      source      ORB      producer      Otto Matic      solution date      2020-Jul-21 07:00:01   Additional Information  Earth MOID = .145582 au   Jupiter MOID = 3.82657 au   T_jup = 5.547  [ 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 16.8   n/a MPO256943   SMASSII spectral type spec_B Q   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) 10563 Izhdubar           Discovered 1993 Nov. 19 by C. S. Shoemaker and E. M. Shoemaker at Palomar. Izhdubar was an ancient Chaldean sun-god. He was responsible for slaying the dreaded dragon Tiamat, which personified primeval chaos and was hostile to gods and men. The exploits of Izhdubar are thought to represent the sun's annual passage through the twelve signs of the zodiac. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 19991123/MPCPages.arc Last Updated: 2010-06-11 [ show close-approach data ] Alternate Designations  1993 WD = 1991 VJ14  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 15:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin