+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   12617 Angelusilesius (5568 P-L) Classification: Main-belt Asteroid          SPK-ID: 2012617 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1227329544879942 4.4196e-08   a 2.639904918162534 9.3466e-09 au q 2.315901587989059 1.1893e-07 au i 8.065115221897312 4.8487e-06 deg node 30.42707939920886 2.2212e-05 deg peri 321.2663792027271 2.6819e-05 deg M 24.98601728432836 1.365e-05 deg tp 2459091.763489993898 (2020-Aug-30.26348999) 5.9535e-05 TDB period 1566.682002847615 4.29 8.3203e-06 2.278e-08 d yr n .2297849846654655 1.2203e-09 deg/d Q 2.963908248336008 1.0494e-08 au   Orbit Determination Parameters    # obs. used (total)      2282      data-arc span      22006 days (60.25 yr)      first obs. used      1960-10-17      last obs. used      2021-01-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42842      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:06:55   Additional Information  Earth MOID = 1.31588 au   Jupiter MOID = 2.48807 au   T_jup = 3.371  [ 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 13.55   n/a E2021B10   diameter diameter 11.185 km 3.294 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   geometric albedo albedo 0.055   0.057 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   12617 Angelusilesius           Discovered 1960 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. Angelus Silesius (Johannes Scheffler, 1624-1677) was a German baroque poet. His wisdom was expressed in short verses that are still read and used today. His best known collection starts with "Mensch werde wesentlich ..." NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20080819/MPCPages.arc Last Updated: 2008-08-25 [ show close-approach data ] Alternate Designations  5568 P-L = 1977 RY = 1986 XB2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 21:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin