+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   8 Flora Classification: Main-belt Asteroid          SPK-ID: 2000008 [ 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 86 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1562033449676233 2.7121e-08   a 2.201711320061714 1.9334e-09 AU q 1.857796647214993 5.9494e-08 AU i 5.887845985901139 3.7538e-06 deg node 110.922180790083 2.7726e-05 deg peri 285.3299956687297 3.0197e-05 deg M 250.9454910126726 1.2693e-05 deg tp 2456761.976539329560 (2014-Apr-14.47653933) 4.2276e-05 JED period 1193.270735589332 3.27 1.5718e-06 4.303e-09 d yr n .3016918032622357 3.9739e-10 deg/d Q 2.545625992908435 2.2354e-09 AU   Orbit Determination Parameters    # obs. used (total)      2166      data-arc span      60124 days (164.61 yr)      first obs. used      1847-11-03      last obs. used      2012-06-14      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .64146      data source      ORB      producer      Otto Matic      solution date      2013-Mar-29 15:10:21   Additional Information  Earth MOID = .874693 AU   T_jup = 3.642  [ 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 6.49 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19 magnitude slope G 0.28   n/a PDS3 (MPC 17257) Fit diameter diameter 135.89 km 2.3 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19 rotation period rot_per 12.865 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Hollis, A.J.; Bembrick, C.S.; Dumont, M.; Miles, R. (1987) J. Brit. Astron. Assoc. 97, 220-223.] [Di Martino, M.; Zappala, V.; Cellino, A.; Barucci, M.A.; et al. (1989) Astron. Astrophys.; 223, 352-360.] [Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.] [Piironen, J.; Lagerkvist, C.-I.; Erikson, A.; Oja, T.; et al. (1998) Astron. Astrophys. Suppl. Ser. 128, 525-540.] [Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.] [Pilcher, F. (2009) Minor Planet Bul. 36, 133-136.] [Durech, J.; Kaasalainen, M.; Herald, D.; Dunham, D.; et al. (2011) Icarus 214, 652-670.] [Durech, J. (2011) Database of Asteroid Models from Inversion Techniques (DAMIT). http://astro.troja.mff.cuni.cz/projects/aster oids3D/web.php] geometric albedo albedo 0.2426   0.008 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 19 B-V BV .885 mag .015 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=8.07, mean=16.45, max.=32.13) deg. U-B UB .489 mag .024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=9; phase (min.=8.07, mean=17.27, max.=32.13) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo 8 Flora          Discovered 1847-Oct-18 by Hind, J. R. at London Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-23 21:45 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin