+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16646 Sparrman (1993 SJ5) Classification: Main-belt Asteroid          SPK-ID: 2016646 [ 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 .07975704133982039 1.7503e-08   a 2.345092375227435 7.2122e-09 au q 2.158054745710722 4.141e-08 au i 6.552330003522293 7.2718e-07 deg node 347.9294847076832 6.9751e-06 deg peri 106.1833109005027 9.5962e-06 deg M 116.312481015475 6.4693e-06 deg tp 2458776.698804350896 (2019-Oct-20.19880435) 2.3551e-05 TDB period 1311.711598804074 3.59 6.0511e-06 1.657e-08 d yr n .2744505730743118 1.2661e-09 deg/d Q 2.532130004744146 7.7874e-09 au   Orbit Determination Parameters    # obs. used (total)      2313      data-arc span      12330 days (33.76 yr)      first obs. used      1986-09-09      last obs. used      2020-06-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44462      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:37:42   Additional Information  Earth MOID = 1.18536 au   Jupiter MOID = 2.5747 au   T_jup = 3.548  [ 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 13.99   n/a E2021B10   diameter diameter 3.778 km 0.383 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.269   0.111 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   16646 Sparrman           Discovered 1993 Sept. 19 by E. W. Elst at Caussols. Anders Erikson Sparrman (1748-1820) studied medicine and botany and became one of the most outstanding pupils of Linnaeus. In 1772 he joined James Cook on his second voyage around the world, later writing about this in A voyage to the Cape of Good Hope, towards the Antarctic polar circle, and round the world (1789). NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070106/MPCPages.arc Last Updated: 2007-01-09 [ show close-approach data ] Alternate Designations  1993 SJ5 = 1986 RS17 = 1986 RY10 = 1995 CK1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 09:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin