+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   704 Interamnia (A910 TC) Classification: Main-belt Asteroid          SPK-ID: 2000704 [ 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 145 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1550200983143791 2.637e-08   a 3.056687045914828 5.4101e-09 au q 2.582839119540822 8.1508e-08 au i 17.31015759672682 2.8046e-06 deg node 280.2867133967342 9.7314e-06 deg peri 94.87290692632303 1.3378e-05 deg M 174.4596292125014 1.0136e-05 deg tp 2458054.551841946782 (2017-Oct-28.05184195) 5.3944e-05 TDB period 1951.97787841427 5.34 5.1823e-06 1.419e-08 d yr n .18442831959369 4.8963e-10 deg/d Q 3.530534972288833 6.2487e-09 au   Orbit Determination Parameters    # obs. used (total)      4887      data-arc span      40134 days (109.88 yr)      first obs. used      1910-10-09      last obs. used      2020-08-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41149      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:26:42   Additional Information  Earth MOID = 1.65593 au   Jupiter MOID = 2.14319 au   T_jup = 3.148  [ hide covariance matrix ] Orbital Elements at Epoch 2452623.5 (2002-Dec-15.0) TDB Reference: JPL 145 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1465134105443779 2.6325e-08   q 2.616539768186889 8.0517e-08 au tp 2452186.546646267184 (2001-Oct-04.04664627) 5.4582e-05 TDB node 280.6561349668893 9.6966e-06 deg peri 95.14715636818281 1.3788e-05 deg i 17.3213736559459 2.8044e-06 deg   Orbit Determination Parameters    # obs. used (total)      4887      data-arc span      40134 days (109.88 yr)      first obs. used      1910-10-09      last obs. used      2020-08-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41149      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 04:26:42   Additional Information  Jupiter MOID = 2.14319 au   T_jup = 3.148  Orbit Covariance (6×6)   e q tp node peri i e 6.929975115983245E-16 -2.116227792524697E-15 -1.83766947621374E-14 -1.921548666721993E-15 -2.235061577165599E-14 1.812095422194916E-16 q -2.116227792524697E-15 6.482973730213873E-15 6.646581772363613E-14 7.230568481695723E-15 6.966459413895889E-14 -6.889496566528222E-16 tp -1.83766947621374E-14 6.646581772363613E-14 2.979228428363898E-9 -2.802217853445205E-12 5.47713483938526E-10 -3.279791227176643E-12 node -1.921548666721993E-15 7.230568481695723E-15 -2.802217853445205E-12 9.40239230579205E-11 -8.977068032982062E-11 2.551369691299527E-12 peri -2.235061577165599E-14 6.966459413895889E-14 5.47713483938526E-10 -8.977068032982062E-11 1.901050308421717E-10 -2.962874462579873E-12 i 1.812095422194916E-16 -6.889496566528222E-16 -3.279791227176643E-12 2.551369691299527E-12 -2.962874462579873E-12 7.864429084309586E-12 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 6.4   n/a MPO502159 IRAS observations used: 28 magnitude slope G -0.02   n/a PDS3 (MPC 17259) Fit diameter diameter 306.313 km 1.031 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   GM GM 5. km^3/s^2 n/a Landgraf, IAU Symposium #152, 1992   rotation period rot_per 8.727 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 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] [Behrend, R. (2012) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Sato, I.; Buie, M.; Maley, P.D.; Hamanowa, H.; et al. (2014) Intl. Journ. Astron. Astrophys. 4, 91-118.] [Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Warner, B.D. (2018) Minor Planet Bull. 45, 39-45.] [HanuÅ¡, J.; Vernazza, P.; Viikinkoski, M.; Ferrais, M.; et al. (2020) Astron. Astrophys. 633, A65.] geometric albedo albedo 0.078   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.645   0.014 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=11; phase (min.=1.61, mean=13.90, max.=22.24) deg. U-B UB 0.259   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #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 (A910 TC)          Discovered 1910-Oct-02 by Cerulli, V. at Teramo Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A910 TC = 1952 MW  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 14:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin