+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   387 Aquitania (A894 EC) Classification: Main-belt Asteroid          SPK-ID: 2000387 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 114 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2350637882029453 3.5151e-08   a 2.741524664290663 7.3175e-09 au q 2.097091491250691 9.6699e-08 au i 18.11521760489843 4.1069e-06 deg node 128.2194603493454 8.6906e-06 deg peri 157.3196272103041 1.1011e-05 deg M 188.0049276724997 8.0186e-06 deg tp 2459792.636758220082 (2022-Aug-01.13675822) 3.9434e-05 TDB period 1658.008157444368 4.54 6.6382e-06 1.817e-08 d yr n .2171280028892616 8.6932e-10 deg/d Q 3.385957837330634 9.0376e-09 au   Orbit Determination Parameters    # obs. used (total)      2913      data-arc span      46275 days (126.69 yr)      first obs. used      1894-03-07      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48182      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:53:13   Additional Information  Earth MOID = 1.09089 au   Jupiter MOID = 1.89293 au   T_jup = 3.239  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.6   n/a MPO502156 IRAS observations used: 6 diameter diameter 100.51 km 2.9 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6 rotation period rot_per 24.144 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Schober, H.J. (1979) Astron. Astrophys. Suppl. Ser. 38, 91-99.] [Harris, A.W.; Young, J.W.; Dockweiler, T.; Gibson, J.; et al. (1992) Icarus 95, 115-147.] [Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2003) Abstracts of Photometry and Polarimetry of Asteroids: Impact on Collaboration, Kharkiv, 9-10.] [Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.] [Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.] [Behrend, R. (2017) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Devogele, M.; Tanga, P.; Bendjoya, P.; Rivet, J.P.; et al. (2017) ArXiv:1707.07503.] [Hanus, J.; Viikinkoski, M.; Marchis, F.; Durech, J.; et al (2017) Astron. Astrophys. 601, A114.] [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] geometric albedo albedo 0.1900   0.011 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 6 B-V BV 0.881   0.021 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=6; phase (min.=7.56, mean=16.93, max.=23.25) deg. U-B UB 0.449   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=7.56, mean=15.66, max.=22.65) deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices SMASSII spectral type spec_B L   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) 387 Aquitania (A894 EC)          Discovered 1894-Mar-05 by Courty, F. at Bordeaux Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A894 EC = 1945 NA = 1948 BG = 1953 EO1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-17 20:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin