+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   12618 Cellarius (6217 P-L) Classification: Main-belt Asteroid          SPK-ID: 2012618 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .140577922579459 1.2971e-07   a 3.103056372762639 2.7583e-08 AU q 2.666835154232715 4.0858e-07 AU i 16.09323044627012 1.3354e-05 deg node 196.229326893302 2.6233e-05 deg peri 13.51437399664826 3.7721e-05 deg M 358.4608736944309 2.3891e-05 deg tp 2456409.036005477544 (2013-Apr-26.53600548) 0.0001325 JED period 1996.562569814392 5.47 2.6621e-05 7.288e-08 d yr n .1803099013488303 2.4042e-09 deg/d Q 3.539277591292562 3.1461e-08 AU   Orbit Determination Parameters    # obs. used (total)      579      data-arc span      19203 days (52.57 yr)      first obs. used      1960-09-24      last obs. used      2013-04-22      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .61307      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:49:17   Additional Information  Earth MOID = 1.66551 AU   T_jup = 3.146  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.2 mag n/a PDS3 (MPC 36774)   12618 Cellarius           Discovered 1960 Sept. 24 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Andreas Cellarius (c. 1596-1665), a German schoolmaster from Neuhausen near Worms, settled in Amsterdam in the early 1620s, becoming rector of the Latin School in Hoorn in 1637. His Harmonia Macrocosmica, published 1660 in Amsterdam, ranks amongst the most spectacular celestial atlases of the seventeenth century. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20080122/MPCPages.arc Last Updated: 2008-03-05 [ show close-approach data ] Alternate Designations  6217 P-L = 1980 GG1  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-24 05:43 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin