+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1490 Limpopo (1936 LB) Classification: Main-belt Asteroid          SPK-ID: 2001490 [ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1543593269842424 3.6534e-08   a 2.352511444368265 6.2218e-09 au q 1.989379361092851 8.6586e-08 au i 10.02106011761459 4.2903e-06 deg node 254.2629935986577 2.3132e-05 deg peri 90.63852191414411 2.7102e-05 deg M 31.7876259156849 1.4033e-05 deg tp 2458884.127158997513 (2020-Feb-04.62715900) 5.1257e-05 TDB period 1317.941228829666 3.61 5.2285e-06 1.431e-08 d yr n .2731533031405965 1.0836e-09 deg/d Q 2.715643527643678 7.1822e-09 au   Orbit Determination Parameters    # obs. used (total)      2303      data-arc span      32812 days (89.83 yr)      first obs. used      1931-01-16      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42481      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:00:56   Additional Information  Earth MOID = 1.01248 au   Jupiter MOID = 2.72597 au   T_jup = 3.520  [ 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 12.1   n/a MPO435710   diameter diameter 14.844 km 0.112 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 6.647 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Sada, P.V. (2006) Minor Planet Bull. 33, 78-79.] [Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.] geometric albedo albedo 0.068   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   SMASSII spectral type spec_B Xc   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) 1490 Limpopo (1936 LB)          Discovered 1936-Jun-14 by Jackson, C. at Johannesburg (UO) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1936 LB = 1931 BL = 1937 WJ = 1937 YK = 1947 ND = 1965 OD  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-28 06:47 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin