+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20433 Prestinenza (1999 CL12) Classification: Main-belt Asteroid          SPK-ID: 2020433 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09033337135214607 3.8892e-08   a 3.147828921595711 2.018e-08 au q 2.86347492266818 1.1912e-07 au i 17.07797366845167 4.1886e-06 deg node 148.6492280612901 1.3524e-05 deg peri 211.991683452278 2.5983e-05 deg M 111.5201952260492 2.1818e-05 deg tp 2458568.574138731047 (2019-Mar-26.07413873) 0.00012427 TDB period 2039.929266584394 5.59 1.9616e-05 5.371e-08 d yr n .1764767072550387 1.697e-09 deg/d Q 3.432182920523242 2.2003e-08 au   Orbit Determination Parameters    # obs. used (total)      1579      data-arc span      24427 days (66.88 yr)      first obs. used      1954-03-07      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51367      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:47:47   Additional Information  Earth MOID = 1.86831 au   Jupiter MOID = 2.00293 au   T_jup = 3.134  [ 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 13.52   n/a E2021B10   diameter diameter 11.349 km 0.213 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.055   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20433 Prestinenza           Discovered 1999 Feb. 14 by G. Masi at Ceccano. Luigi Prestinenza (b. 1929) is a very active, appreciated and popular Italian amateur astronomer. A journalist by profession, he did impressive work to keep fresh the memory of important observers of the past like Cerulli, Schiaparelli and Maggini. He is president of the "G. Ruggeri" astronomical group in Catania, Sicily. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010309/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] Alternate Designations  1999 CL12 = 2000 GQ94  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-10 15:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin