+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1055714777649445 3.4937e-08   a 2.429182734516785 6.1503e-09 au q 2.172730323472759 8.3749e-08 au i 4.058633383595574 3.37e-06 deg node 125.8491497525696 4.4093e-05 deg peri 30.41111472994234 4.6074e-05 deg M 201.438745868444 1.4709e-05 deg tp 2459809.592534986015 (2022-Aug-18.09253499) 5.7427e-05 TDB period 1382.893404797602 3.79 5.2519e-06 1.438e-08 d yr n .2603237521786353 9.8865e-10 deg/d Q 2.685635145560811 6.7996e-09 au   Orbit Determination Parameters    # obs. used (total)      3348      data-arc span      29953 days (82.01 yr)      first obs. used      1939-01-18      last obs. used      2021-01-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .42285      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 00:56:38   Additional Information  Earth MOID = 1.18343 au   Jupiter MOID = 2.29695 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-Mar-02 05:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin