+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1586 Thiele (1939 CJ) Classification: Main-belt Asteroid          SPK-ID: 2001586 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1057799854642327 1.5302e-08   a 2.428813492689086 5.8397e-09 au q 2.171893636737102 3.6584e-08 au i 4.058639217371963 5.7624e-07 deg node 125.8490732718856 6.5435e-06 deg peri 30.42440788944276 9.7254e-06 deg M 252.4691470665504 5.5535e-06 deg tp 2459809.471676726057 (2022-Aug-17.97167673) 2.2158e-05 TDB period 1382.578111915393 3.79 4.9863e-06 1.365e-08 d yr n .2603831182465806 9.3907e-10 deg/d Q 2.68573334864107 6.4574e-09 au   Orbit Determination Parameters    # obs. used (total)      3394      data-arc span      29969 days (82.05 yr)      first obs. used      1939-01-18      last obs. used      2021-02-05      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .42249      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 12:39:01   Additional Information  Earth MOID = 1.18358 au   Jupiter MOID = 2.2962 au   T_jup = 3.498  [ 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 12.13   n/a E2021B10   diameter diameter 11.415 km 0.257 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 3.086 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Behrend, R. (2004) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Childers, D.; Church, A. (2007) Minor Planet Bull. 34, 124-125.] geometric albedo albedo 0.215   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1586 Thiele (1939 CJ)          Discovered 1939-Feb-13 by Wachmann, A. at Bergedorf Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1939 CJ = 1943 DA = 1951 KT  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jul-29 09:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin