+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   1237 Genevieve (1931 XB) Classification: Main-belt Asteroid          SPK-ID: 2001237 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07829080523198177 6.8036e-08   a 2.611273175588519 1.224e-08 AU q 2.406834495991019 1.7626e-07 AU i 9.735736581945929 7.5974e-06 deg node 57.88461439333719 4.0832e-05 deg peri 306.2224091542279 6.2568e-05 deg M 155.3611971233446 4.64e-05 deg tp 2455735.354057299257 (2011-Jun-22.85405730) 0.00019789 JED period 1541.263480237996 4.22 1.0837e-05 2.967e-08 d yr n .2335745994217746 1.6423e-09 deg/d Q 2.815711855186018 1.3199e-08 AU   Orbit Determination Parameters    # obs. used (total)      1116      data-arc span      29727 days (81.39 yr)      first obs. used      1931-12-02      last obs. used      2013-04-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .5015      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 12:42:47   Additional Information  Earth MOID = 1.42044 AU   T_jup = 3.385  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 10.70 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 20 diameter diameter 39.81 km 1.1 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 20 rotation period rot_per 16.37 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Binzel, R.P. (1987) Icarus 72, 135-208.] geometric albedo albedo 0.0585   0.003 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 20 B-V BV .610 mag .020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=7.94 deg. U-B UB .250 mag .060 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=1; phase=7.94 deg. 1237 Genevieve (1931 XB)          Discovered 1931-Dec-02 by Reiss, G. at Algiers Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1931 XB = 1929 GA = 1984 MM = A908 HA  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 16:47 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin