+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19992 Schonbein (1990 TS9) Classification: Main-belt Asteroid          SPK-ID: 2019992 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1427580541607962 5.0162e-08   a 2.726544232033526 1.3601e-08 au q 2.337308082885077 1.3758e-07 au i 7.181242417921402 5.5901e-06 deg node 344.5801279462209 3.4731e-05 deg peri 181.8411055804271 3.7957e-05 deg M 125.4325181187458 1.5238e-05 deg tp 2458627.539228533981 (2019-May-24.03922853) 6.9003e-05 TDB period 1644.437031332631 4.50 1.2304e-05 3.369e-08 d yr n .218919905804031 1.638e-09 deg/d Q 3.115780381181974 1.5542e-08 au   Orbit Determination Parameters    # obs. used (total)      1540      data-arc span      13702 days (37.51 yr)      first obs. used      1983-02-10      last obs. used      2020-08-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48758      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:10:56   Additional Information  Earth MOID = 1.34413 au   Jupiter MOID = 1.86109 au   T_jup = 3.330  [ 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 13.91   n/a E2021B10   diameter diameter 9.012 km 0.068 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.041   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   19992 Schönbein           Discovered 1990 Oct. 10 by F. Borngen and L. D. Schmadel at Tautenburg. German chemist Christian Friedrich Schönbein (1799-1868) was a professor in Basle from 1828. Best known for his discovery of ozone in 1839, he also invented nitrocellulose and collodion wool. He is considered a cofounder of geochemistry. 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  1990 TS9 = 1983 CC8 = 1999 UH26  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 18:43 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin