+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11431 Karelbosscha (4843 T-1) Classification: Main-belt Asteroid          SPK-ID: 2011431 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ 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 .1210280837650722 4.325e-08   a 3.149571363999936 1.9589e-08 au q 2.768384777133679 1.366e-07 au i 5.866087384070394 4.5953e-06 deg node 35.68554175192209 4.5682e-05 deg peri 167.9316297899634 4.9261e-05 deg M 352.9623930641659 1.7782e-05 deg tp 2459436.411505753369 (2021-Aug-09.91150575) 0.00010085 TDB period 2041.623267996547 5.59 1.9047e-05 5.215e-08 d yr n .1763302787753146 1.6451e-09 deg/d Q 3.530757950866192 2.196e-08 au   Orbit Determination Parameters    # obs. used (total)      1096      data-arc span      18319 days (50.15 yr)      first obs. used      1971-04-16      last obs. used      2021-06-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48951      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 16:33:51   Additional Information  Earth MOID = 1.76568 au   Jupiter MOID = 1.42473 au   T_jup = 3.189  [ 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 14.45   n/a MPCxxxxx   diameter diameter 6.810 km 0.173 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.073   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11431 Karelbosscha           Discovered 1971 May 13 by C. J. van Houten and I. van Houten-Groeneveld at Leiden on Palomar Schmidt plates taken by T. Gehrels. Karel Albert Rudolf Bosscha (1865-1928) was a notable Dutch tea planter in Malabar, West Java, who, with his nephew Rudolf Albert Kerkhoven, greatly contributed to the establishment of an astronomical observatory in Lembang, near Bandung. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070926/MPCPages.arc Last Updated: 2007-09-30 [ show close-approach data ] Alternate Designations  4843 T-1 = 3199 T-2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-27 00:26 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin