+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12160 Karelwakker (1152 T-2) Classification: Main-belt Asteroid          SPK-ID: 2012160 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1985873789471585 5.8435e-08   a 2.40718428348343 1.5583e-08 AU q 1.929147865983661 1.4567e-07 AU i 4.874771743798087 8.7333e-06 deg node 13.24657030561289 7.4169e-05 deg peri 275.8146890533663 7.9914e-05 deg M 260.864414155697 3.4615e-05 deg tp 2456776.155292921425 (2014-Apr-28.65529292) 0.00013349 JED period 1364.150968594742 3.73 1.3246e-05 3.627e-08 d yr n .2639004100630066 2.5625e-09 deg/d Q 2.885220700983198 1.8677e-08 AU   Orbit Determination Parameters    # obs. used (total)      734      data-arc span      14450 days (39.56 yr)      first obs. used      1973-09-19      last obs. used      2013-04-12      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .52547      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:47:29   Additional Information  Earth MOID = .920563 AU   T_jup = 3.490  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.4 mag n/a PDS3 (MPC 36318)   12160 Karelwakker           Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Karel F. Wakker (b. 1944), professor of astrodynamics at Delft Techical University, has made important contributions to Dutch, ESA and NASA space projects, as well as inspiring numerous students. The name was suggested by F. Israel. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20100330/MPCPages.arc Last Updated: 2010-04-05 Alternate Designations  1152 T-2 = 1992 UU8  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-24 20:40 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin