+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1197 Rhodesia (1931 LD) Classification: Main-belt Asteroid          SPK-ID: 2001197 [ 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 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2321892378469269 3.408e-08   a 2.886262938187662 1.0949e-08 au q 2.216103746344037 9.681e-08 au i 12.97661065602166 3.4969e-06 deg node 255.7020895509231 1.7317e-05 deg peri 277.1205307272123 1.9212e-05 deg M 123.7758462429869 1.0785e-05 deg tp 2458384.705693148000 (2018-Sep-23.20569315) 5.1747e-05 TDB period 1791.027548553568 4.90 1.0192e-05 2.79e-08 d yr n .2010019333821725 1.1438e-09 deg/d Q 3.556422130031287 1.3492e-08 au   Orbit Determination Parameters    # obs. used (total)      2801      data-arc span      34997 days (95.82 yr)      first obs. used      1925-01-14      last obs. used      2020-11-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .37319      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 01:59:05   Additional Information  Earth MOID = 1.26525 au   Jupiter MOID = 1.7311 au   T_jup = 3.215  [ 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 10.2   n/a MPO347524   diameter diameter 47.741 km 0.163 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 16.060 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Binzel, R.P. (1987) Icarus 72, 135-208.] [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durech, J.; Hanus, J.; Ali-Lagoa, V. (2018) Astron. Astrophys. 617, A57.] [Polakis, T. (2018) Minor Planet Bull. 45, 199-203.] geometric albedo albedo 0.063   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.740   0.030 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=8.38 deg. 1197 Rhodesia (1931 LD)          Discovered 1931-Jun-09 by Jackson, C. at Johannesburg (UO) Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1931 LD = 1925 AC = 1970 HL  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-28 04:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin