+ 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 ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1223205349639096 7.5649e-09   a 2.394366685335701 9.1216e-09 au q 2.101486471485675 1.6383e-08 au i 9.422175055895845 4.0221e-07 deg node 323.9339029414293 3.2825e-06 deg peri 169.7394846154944 1.0275e-05 deg M 205.9663085951834 8.9381e-06 deg tp 2459975.525434688749 (2023-Jan-31.02543469) 3.4803e-05 TDB period 1353.269889118762 3.71 7.7331e-06 2.117e-08 d yr n .2660223233330263 1.5202e-09 deg/d Q 2.687246899185727 1.0237e-08 au   Orbit Determination Parameters    # obs. used (total)      1825      data-arc span      30453 days (83.38 yr)      first obs. used      1938-02-20      last obs. used      2021-07-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45963      source      ORB      producer      Otto Matic      solution date      2021-Jul-09 13:52:03   Additional Information  Earth MOID = 1.11669 au   Jupiter MOID = 2.34499 au   T_jup = 3.502  [ 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 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 Alternate Designations  1991 PY2 = 1938 DP1 = 1975 FM = 1992 WA6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jul-25 01:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin