+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3445 Pinson (1983 FC) Classification: Main-belt Asteroid          SPK-ID: 2003445 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1248532417634435 4.1986e-08   a 2.687802777556283 1.1202e-08 au q 2.352221887557594 1.1419e-07 au i 11.28599826461747 4.6687e-06 deg node 334.038804875701 1.445e-05 deg peri 200.3264344209536 1.9065e-05 deg M 161.3860656382773 1.395e-05 deg tp 2458278.963911156339 (2018-Jun-09.46391116) 6.1317e-05 TDB period 1609.513132105937 4.41 1.0062e-05 2.755e-08 d yr n .2236701228581868 1.3983e-09 deg/d Q 3.023383667554973 1.2601e-08 au   Orbit Determination Parameters    # obs. used (total)      2832      data-arc span      17070 days (46.74 yr)      first obs. used      1974-02-15      last obs. used      2020-11-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .3759      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:12:12   Additional Information  Earth MOID = 1.36153 au   Jupiter MOID = 1.97222 au   T_jup = 3.335  [ 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 12.5   n/a MPO259361   diameter diameter 19.838 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 7.801 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Klinglesmith, D.A.; Jamieson, Q.; Pilcher, F. (2005) Minor Planet Bull. 32, 75-76.] geometric albedo albedo 0.058   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3445 Pinson           Discovered 1983 Mar. 16 by E. Barr at the Anderson Mesa Station of the Lowell Observatory. William Hamet Pinson, Jr. (b. 1919), emeritus professor of geology at the Massachusetts Institute of Technology, is known in particular for his extensive studies of the rubidium-strontium ratio in lunar rocks and soil, tektites, meteorites and meteorite craters. The name was suggested by P. Topalian. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000523/MPCPages.arc Last Updated: 2013-03-29 [ show close-approach data ] Alternate Designations  1983 FC = 1952 DF = 1974 CK1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 17:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin