+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1315 Bronislawa (1933 SF1) Classification: Outer Main-belt Asteroid          SPK-ID: 2001315 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 61 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07519997130906958 1.4326e-08   a 3.206896479056118 1.1955e-08 au q 2.965737955839941 4.6709e-08 au i 7.082257906986427 1.5026e-06 deg node 236.4841585624889 7.8762e-06 deg peri 21.44673113815556 1.6984e-05 deg M 156.4343206690904 1.8255e-05 deg tp 2458289.002718191317 (2018-Jun-19.50271819) 0.00010452 TDB period 2097.615280634274 5.74 1.173e-05 3.211e-08 d yr n .1716234637131094 9.5971e-10 deg/d Q 3.448055002272294 1.2854e-08 au   Orbit Determination Parameters    # obs. used (total)      3416      data-arc span      42130 days (115.35 yr)      first obs. used      1905-11-04      last obs. used      2021-03-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41981      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 12:17:07   Additional Information  Earth MOID = 1.95062 au   Jupiter MOID = 1.58878 au   T_jup = 3.176  [ 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 10.09   n/a MPCxxxxx   diameter diameter 64.863 km 0.340 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 9.578 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Ditteon, R.; West, J. (2011) Minor Planet Bull. 38, 214-217.] [Moravec, P.; Letfullina, A.; Ditteon, R. (2013) Minor Planet Bull. 40, 17-20.] [Polakis, T. (2018) Minor Planet Bull. 45, 347-352.] geometric albedo albedo 0.040   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   1315 Bronislawa (1933 SF1)          Discovered 1933-Sep-16 by Arend, S. at Uccle Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1933 SF1 = 1949 KC = 1951 UB = 1962 UB = 1966 HN = A905 VE = A916 UF = A924 BG  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-May-10 21:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin