+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11842 Kap'bos (1987 BR1) Classification: Main-belt Asteroid          SPK-ID: 2011842 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09482357992638904 1.735e-08   a 2.250383171536896 5.3124e-09 au q 2.036993783005666 3.9756e-08 au i 3.691287599103401 7.187e-07 deg node 272.7821875828841 1.214e-05 deg peri 172.8747882840472 1.767e-05 deg M 45.14774696210446 1.1035e-05 deg tp 2459045.861824988070 (2020-Jul-15.36182499) 3.765e-05 TDB period 1233.056946363731 3.38 4.3663e-06 1.195e-08 d yr n .2919573188096749 1.0338e-09 deg/d Q 2.463772560068126 5.8162e-09 au   Orbit Determination Parameters    # obs. used (total)      2375      data-arc span      12471 days (34.14 yr)      first obs. used      1987-01-22      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48225      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:59:04   Additional Information  Earth MOID = 1.05296 au   Jupiter MOID = 2.69032 au   T_jup = 3.619  [ 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 14.09   n/a E2021B10   rotation period rot_per 3.68578 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pravec, P.; Vokrouhlicky, D.; Polishook, D.; Scheeres, D.J.; et al. (2010) Nature 466, 1085-1088. Lightcurve plots as supplemental data, http://www.Nature.com/nature] [Pravec, P.; Fatka, P.; Vokrouhlicky, D.; Scheeres, D.J.; et al. (2018) Icarus 304, 110-126.] 11842 Kap'bos           Discovered 1987 Jan. 22 by E. W. Elst at the European Southern Observatory Kap'bos is a small village, about 20 km east of the city of Antwerp. In 1936 the discoverer was born there. It is currently the site of the Holbach Foundation. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20010804/MPCPages.arc Last Updated: 2009-05-11 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 18:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin