+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   704 Interamnia (1910 KU) Classification: Main-belt Asteroid          SPK-ID: 2000704 [ 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 124 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1527271260440495 3.1052e-08   a 3.063302025600251 6.1018e-09 AU q 2.595452711025409 9.5583e-08 AU i 17.30572152747194 3.1708e-06 deg node 280.3169896273788 1.1227e-05 deg peri 96.08736006362786 1.5454e-05 deg M 54.12811253405622 1.2167e-05 deg tp 2456106.055438878672 (2012-Jun-27.55543888) 6.5833e-05 JED period 1958.317721442536 5.36 5.8512e-06 1.602e-08 d yr n .1838312527421836 5.4926e-10 deg/d Q 3.531151340175092 7.0337e-09 AU   Orbit Determination Parameters    # obs. used (total)      3117      data-arc span      37395 days (102.38 yr)      first obs. used      1910-10-09      last obs. used      2013-02-25      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .54028      data source      ORB      producer      Otto Matic      solution date      2013-Mar-29 15:07:26   Additional Information  Earth MOID = 1.6678 AU   T_jup = 3.147  [ 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 5.94 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 28 magnitude slope G -0.02   n/a PDS3 (MPC 17259) Fit diameter diameter 316.62 km 5.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 28 GM GM 5. km^3/s^2 n/a Landgraf, IAU Symposium #152, 1992   rotation period rot_per 8.727 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Tempesti, P. (1975) Mem. Soc. Astron. Ital. 46, 397-405.] [Lustig, G.; Hahn, G. (1976) Acta Physica Austriaca 44, 199-205.] [Michalowski, T.; Velichko, F.P.; Di Martino, M.; Krugly, et al. (1995) Icarus 118, 292-301.] [Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Hamanowa, H.; Hamanowa, H. (2011) http://www2.ocn.ne.jp/~hamaten/astlcdata.htm] [Hamanowa, H.; Hamanowa, H. (2011) http://www2.ocn.ne.jp/~hamaten/astlcdata.htm] [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.0742   0.002 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 28 B-V BV .645 mag .014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=11; phase (min.=1.61, mean=13.90, max.=22.24) deg. U-B UB .259 mag .021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.1 #obs=10; phase (min.=1.61, mean=13.78, max.=22.24) deg. Tholen spectral type spec_T F   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices; used ground-based radiometric albedo SMASSII spectral type spec_B B   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) 704 Interamnia (1910 KU)          Discovered 1910-Oct-02 by Cerulli, V. at Teramo Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1910 KU = 1952 MW  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-18 16:11 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin