+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 53 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07544191088259242 3.2073e-08   a 3.206072113761184 1.4374e-08 au q 2.964199907071648 9.905e-08 au i 7.083232392997375 3.5172e-06 deg node 236.4820572281729 3.0688e-05 deg peri 21.34847700007681 4.0245e-05 deg M 122.1980207602283 2.6005e-05 deg tp 2458288.762206209709 (2018-Jun-19.26220621) 0.00015159 TDB period 2096.806512662424 5.74 1.4101e-05 3.861e-08 d yr n .1716896613139995 1.1546e-09 deg/d Q 3.44794432045072 1.5459e-08 au   Orbit Determination Parameters    # obs. used (total)      2882      data-arc span      41908 days (114.74 yr)      first obs. used      1905-11-04      last obs. used      2020-07-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .44549      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:31:48   Additional Information  Earth MOID = 1.95072 au   Jupiter MOID = 1.58986 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 10.0   n/a MPO267712   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. 2019-August); 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 ] 2020-Oct-20 03:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin