+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   187 Lamberta (A878 GB) Classification: Main-belt Asteroid          SPK-ID: 2000187 [ 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 90 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2412956175936222 3.3855e-08   a 2.727125382078189 7.7894e-09 au q 2.069081978754389 9.0928e-08 au i 10.58457663827469 3.337e-06 deg node 21.69147863326249 1.7231e-05 deg peri 196.8222874160737 1.8446e-05 deg M 163.9267711861075 8.2465e-06 deg tp 2458251.462658220544 (2018-May-12.96265822) 3.6565e-05 TDB period 1644.962815344323 4.50 7.0477e-06 1.93e-08 d yr n .2188499318293981 9.3764e-10 deg/d Q 3.385168785401989 9.6689e-09 au   Orbit Determination Parameters    # obs. used (total)      2773      data-arc span      42864 days (117.36 yr)      first obs. used      1902-09-26      last obs. used      2020-02-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45652      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 15:20:15   Additional Information  Earth MOID = 1.0647 au   Jupiter MOID = 1.60342 au   T_jup = 3.289  [ 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 8.3   n/a MPO502154 IRAS observations used: 12 diameter diameter 147.294 km 1.389 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 10.670 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.] [Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.] [Behrend, R. (2004) 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] [Durech, J. (2006) IAU 2006, poster paper.] [Hanus, J.; Durech, J.; Broz, M.; Warner, B.D.; et al. (2011) Astron. Astrophys. 530, A134.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.044   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.709   0.027 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.94, mean=11.39, max.=19.79) deg. U-B UB 0.348   0.024 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=5; phase (min.=4.94, mean=11.39, max.=19.79) 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) 187 Lamberta (A878 GB)          Discovered 1878-Apr-11 by Coggia, J. at Marseille Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  A878 GB = 1946 LB = 1948 XR  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-05 23:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin