+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1212362088354347 4.3675e-08   a 3.150295833183567 2.0997e-08 au q 2.768365909658324 1.3719e-07 au i 5.865593701652447 4.6723e-06 deg node 35.69018766370601 4.7531e-05 deg peri 167.9096042344618 5.108e-05 deg M 318.4321625764971 1.8604e-05 deg tp 2459436.319853416997 (2021-Aug-09.81985342) 0.00010581 TDB period 2042.327734425713 5.59 2.0418e-05 5.59e-08 d yr n .176269456626279 1.7622e-09 deg/d Q 3.53222575670881 2.3542e-08 au   Orbit Determination Parameters    # obs. used (total)      962      data-arc span      18231 days (49.91 yr)      first obs. used      1971-04-16      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5091      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:45:45   Additional Information  Earth MOID = 1.76413 au   Jupiter MOID = 1.42428 au   T_jup = 3.188  [ 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 14.42   n/a E2021B10   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-Apr-14 06:31 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin