+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1941118331615229 2.9413e-08   a 2.418054597477947 6.8744e-09 au q 1.948681586876855 7.0493e-08 au i 13.34393919128498 4.1596e-06 deg node 176.9159845794439 1.7236e-05 deg peri 302.0386605810912 2.125e-05 deg M 191.8123753038558 1.3519e-05 deg tp 2459642.136582666470 (2022-Mar-03.63658267) 5.2307e-05 TDB period 1373.401700495177 3.76 5.8568e-06 1.604e-08 d yr n .2621228733517678 1.1178e-09 deg/d Q 2.88742760807904 8.2089e-09 au   Orbit Determination Parameters    # obs. used (total)      2511      data-arc span      40742 days (111.55 yr)      first obs. used      1908-11-29      last obs. used      2020-06-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44306      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:22:00   Additional Information  Earth MOID = .997375 au   Jupiter MOID = 2.26824 au   T_jup = 3.453  [ 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 11.7   n/a MPO337250   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. 2019-August); 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 ] 2020-Aug-06 23:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin