+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17744 Jodiefoster (1998 BZ31) Classification: Mars-crossing Asteroid          SPK-ID: 2017744 [ 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 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3112644194097981 3.4722e-08   a 2.393349049505124 9.4487e-09 au q 1.648384647165919 8.1618e-08 au i 3.075111803605689 4.6445e-06 deg node 240.7096800393759 6.8707e-05 deg peri 102.0978956656886 6.917e-05 deg M 125.2345316982644 9.5607e-06 deg tp 2458530.033088625125 (2019-Feb-15.53308862) 3.4001e-05 TDB period 1352.407245814791 3.70 8.0087e-06 2.193e-08 d yr n .2661920077063097 1.5763e-09 deg/d Q 3.138313451844328 1.239e-08 au   Orbit Determination Parameters    # obs. used (total)      1236      data-arc span      16871 days (46.19 yr)      first obs. used      1974-08-21      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52499      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 02:19:11   Additional Information  Earth MOID = .644112 au   Jupiter MOID = 2.29664 au   T_jup = 3.461  [ 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 15.1   n/a MPO449081   diameter diameter 2.117 km 0.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.360   0.181 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   17744 Jodiefoster           Discovered 1998 Jan. 18 by the OCA-DLR Asteroid Survey at Caussols. Jodie Foster (b. 1962) is an accomplished actress and film director. For most astronomers she will always be Eleanor "Ellie" Arroway in Robert Zemeckis' movie Contact, based on the novel by the same name written by the late Carl Sagan. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020921/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1998 BZ31 = 1974 QY = 1978 WH5 = 1989 UA9 = 2000 OC45  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-26 13:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin