+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11524 Pleyel (1991 PY2) Classification: Main-belt Asteroid          SPK-ID: 2011524 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1223328377802427 7.5119e-09   a 2.394353838883595 8.8966e-09 au q 2.101445739122947 1.6029e-08 au i 9.420648494162018 4.022e-07 deg node 323.9374420872622 3.2848e-06 deg peri 169.4088185427167 1.031e-05 deg M 154.2400093359132 8.8564e-06 deg tp 2458620.703665266061 (2019-May-17.20366527) 3.2438e-05 TDB period 1353.25899812182 3.71 7.5424e-06 2.065e-08 d yr n .2660244642744971 1.4827e-09 deg/d Q 2.687261938644243 9.9849e-09 au   Orbit Determination Parameters    # obs. used (total)      1781      data-arc span      30128 days (82.49 yr)      first obs. used      1938-02-20      last obs. used      2020-08-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .46199      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:49:17   Additional Information  Earth MOID = 1.11601 au   Jupiter MOID = 2.34596 au   T_jup = 3.502  [ 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 13.93   n/a E2021B10   diameter diameter 5.439 km 1.355 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.187   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   11524 Pleyel           Discovered 1991 Aug. 2 by E. W. Elst at the European Southern Observatory. Ignaz Jozef Pleyel (1757-1831) was an Austro-French composer who became famous as a piano builder. In 1795 he settled in Paris, where he founded a piano manufacturing company in 1807. The famous Polish-French composer Chopin preferred the Pleyel grand piano for performing his compositions. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000726/MPCPages.arc Last Updated: 2013-03-29 [ show close-approach data ] Alternate Designations  1991 PY2 = 1938 DP1 = 1975 FM = 1992 WA6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 10:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin