+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   340 Eduarda (A892 SD) Classification: Main-belt Asteroid          SPK-ID: 2000340 [ 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 36 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1162009691798267 3.2744e-08   a 2.745749708220599 8.9281e-09 au q 2.426690931000139 9.0268e-08 au i 4.668147003167619 4.2668e-06 deg node 26.96555445973453 4.4936e-05 deg peri 43.15861085891756 4.8594e-05 deg M 325.1722153600626 1.8435e-05 deg tp 2459161.273029572201 (2020-Nov-07.77302957) 8.5264e-05 TDB period 1661.842441153223 4.55 8.1055e-06 2.219e-08 d yr n .2166270346003324 1.0566e-09 deg/d Q 3.064808485441059 9.9656e-09 au   Orbit Determination Parameters    # obs. used (total)      3144      data-arc span      46797 days (128.12 yr)      first obs. used      1892-09-25      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42213      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:52:52   Additional Information  Earth MOID = 1.44335 au   Jupiter MOID = 2.2067 au   T_jup = 3.333  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 9.90   n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 8 diameter diameter 28.025 km 0.456 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 8.0062 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Lagerkvist, C.-I. (1978) Astron. Astrophys. Suppl. Ser. 31, 361-381.] [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Ditteon, R.; Hawkins, S. (2007) Minor Planet Bull. 34, 59-64.] [Sada, P.V.; Warner, B.D. (2007) Minor Planet Bull. 34, 37-38.] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] geometric albedo albedo 0.247   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a medium resolution spectrum published by Chapman and Gaffey (1979) 340 Eduarda (A892 SD)          Discovered 1892-Sep-25 by Wolf, M. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  A892 SD = 1954 FA = 1959 JT  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-19 19:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin