+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   865 Zubaida (A917 CH) Classification: Main-belt Asteroid          SPK-ID: 2000865 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1948064097676977 1.6343e-08   a 2.416045895821934 5.9541e-09 au q 1.945384669022882 3.9239e-08 au i 13.35470836710015 7.8293e-07 deg node 176.8905938115563 2.7705e-06 deg peri 302.2596463099556 4.7086e-06 deg M 295.4930717569401 4.6652e-06 deg tp 2459642.287650303976 (2022-Mar-03.78765030) 1.8392e-05 TDB period 1371.690708570533 3.76 5.0706e-06 1.388e-08 d yr n .2624498349013119 9.7018e-10 deg/d Q 2.886707122620986 7.114e-09 au   Orbit Determination Parameters    # obs. used (total)      3073      data-arc span      40953 days (112.12 yr)      first obs. used      1908-11-29      last obs. used      2021-01-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41142      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 11:33:05   Additional Information  Earth MOID = .994484 au   Jupiter MOID = 2.26731 au   T_jup = 3.454  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 11.71   n/a E2021B10   diameter diameter 17.77 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4 rotation period rot_per 11.3533 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Bembrick, C.; Crawford, G.; Bolt, G.; Allen, B. (2007) Minor Planet Bull. 34, 84.] [Higgins, D.; Oey, J. (2007) Minor Planet Bull. 34, 79-80.] geometric albedo albedo 0.0972   0.014 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 4 865 Zubaida (A917 CH)          Discovered 1917-Feb-15 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A917 CH = 1936 FK1 = 1970 GQ1 = A908 WF  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-25 11:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin