+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   345 Tercidina (A892 WB) Classification: Main-belt Asteroid          SPK-ID: 2000345 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 122 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06163349647581037 8.6842e-09   a 2.325436358790647 3.0649e-09 au q 2.182111585166402 2.0536e-08 au i 9.74317621036786 2.9489e-07 deg node 212.5980316733376 1.5287e-06 deg peri 231.3033481324133 8.9868e-06 deg M 12.35831824310204 1.0138e-05 deg tp 2459156.035645850262 (2020-Nov-02.53564585) 3.6454e-05 TDB period 1295.254514330072 3.55 2.5607e-06 7.011e-09 d yr n .2779376531925838 5.4948e-10 deg/d Q 2.468761132414892 3.2538e-09 au   Orbit Determination Parameters    # obs. used (total)      3110      data-arc span      46808 days (128.15 yr)      first obs. used      1892-11-24      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .47259      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 09:43:34   Additional Information  Earth MOID = 1.20916 au   Jupiter MOID = 2.68376 au   T_jup = 3.553  [ 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 8.93   n/a E2021B10 IRAS observations used: 13 magnitude slope G 0.10   n/a PDS3 (MPC 17258) Fit diameter diameter 90.243 km 24.561 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   rotation period rot_per 12.371 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Harris, A.W.; Young, J.W. (1983) Icarus 54, 59-109.] [Harris, A.W.; Young, J.W. (1989) Icarus 81, 314-364.] [Behrend, R. (2002) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2008) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Garlitz, J. (2013) Posting on CALL web site. http://www.minorplanet.info/call.html] [Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.] [Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2016) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.052   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   B-V BV 0.729   0.019 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=4; phase (min.=5.68, mean=8.47, max.=10.86) deg. U-B UB 0.411   0.026 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=3; phase (min.=5.68, mean=7.67, max.=10.75) deg. Tholen spectral type spec_T C   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices SMASSII spectral type spec_B Ch   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) 345 Tercidina (A892 WB)          Discovered 1892-Nov-23 by Charlois, A. at Nice Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Mar-05 17:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin