+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12145 Behaim (4730 P-L) Classification: Main-belt Asteroid          SPK-ID: 2012145 [ 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 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08798785445286904 4.0554e-08   a 2.665258129576361 1.5128e-08 au q 2.43074778519187 1.1029e-07 au i 4.745625626930124 5.5529e-06 deg node 25.98023096350495 5.1544e-05 deg peri 291.1384127273066 6.0172e-05 deg M 344.5481571629367 3.2782e-05 deg tp 2459268.715823044129 (2021-Feb-23.21582304) 0.00014485 TDB period 1589.305337547278 4.35 1.3531e-05 3.705e-08 d yr n .226514057113516 1.9285e-09 deg/d Q 2.899768473960851 1.6459e-08 au   Orbit Determination Parameters    # obs. used (total)      676      data-arc span      21826 days (59.76 yr)      first obs. used      1960-09-24      last obs. used      2020-06-27      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .57437      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 23:10:24   Additional Information  Earth MOID = 1.42061 au   Jupiter MOID = 2.33372 au   T_jup = 3.373  [ 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 15.33   n/a E2021B10   12145 Behaim           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Martin Behaim (1459-1507) was a German merchant, astronomer and cosmographer from Nürnberg. He traveled through Europe and became a Portuguese knight. He developed the earliest terrestrial globe, Erdapfel, or `Earth Apple', with a diameter of about 50 cm. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20101128/MPCPages.arc Last Updated: 2010-12-06 [ show close-approach data ] Alternate Designations  4730 P-L = 1995 WG15  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-May-08 21:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin