+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   21682 Pestafrantisek (1999 RT32) Classification: Main-belt Asteroid          SPK-ID: 2021682 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07849960001853111 3.5859e-08   a 2.467114717169615 9.6223e-09 au q 2.273447198671969 9.0143e-08 au i 8.515939520085466 3.2739e-06 deg node 90.80211146785506 2.4522e-05 deg peri 109.0476367980666 3.1363e-05 deg M 10.58191942211576 1.9875e-05 deg tp 2459354.895108639347 (2021-May-20.39510864) 7.8147e-05 TDB period 1415.410597299775 3.88 8.2807e-06 2.267e-08 d yr n .2543431571635705 1.488e-09 deg/d Q 2.660782235667262 1.0378e-08 au   Orbit Determination Parameters    # obs. used (total)      1412      data-arc span      12885 days (35.28 yr)      first obs. used      1986-03-04      last obs. used      2021-06-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47724      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 05:10:33   Additional Information  Earth MOID = 1.28665 au   Jupiter MOID = 2.33317 au   T_jup = 3.467  [ 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 15.13   n/a MPCxxxxx   diameter diameter 3.453 km 0.577 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.148   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   21682 Peštafrantišek           Discovered 1999 Sept. 9 by P. Pravec and P. Kušnirák at Ondřejov. František Pešta (1905-1982), founder of the public observatory in the town of Sezimovo Ústí that now bears his name, was a keen popularizer of astronomy. He studied archival records of the Strkov (near Tábor, Bohemia) meteorite shower in 1753. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010509/MPCPages.arc Last Updated: 2009-05-11 Alternate Designations  1999 RT32 = 1998 HX122  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Aug-01 03:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin