+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1956 Artek (1969 TX1) Classification: Outer Main-belt Asteroid          SPK-ID: 2001956 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1072596227362741 3.8396e-08   a 3.200898653030867 1.708e-08 au q 2.857571471089728 1.255e-07 au i 1.496030581473723 4.525e-06 deg node 153.1141716209789 0.00015175 deg peri 347.2499492267812 0.00015303 deg M 182.9056680588343 2.0483e-05 deg tp 2460029.483647635149 (2023-Mar-25.98364764) 0.00012169 TDB period 2091.733310085381 5.73 1.6743e-05 4.584e-08 d yr n .1721060702453055 1.3776e-09 deg/d Q 3.544225834972005 1.8912e-08 au   Orbit Determination Parameters    # obs. used (total)      2316      data-arc span      24199 days (66.25 yr)      first obs. used      1954-03-07      last obs. used      2020-06-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51999      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:39:17   Additional Information  Earth MOID = 1.87065 au   Jupiter MOID = 1.47292 au   T_jup = 3.185  [ 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 12.1   n/a MPO347533   diameter diameter 19.921 km 3.545 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 9.4 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong. Published Reference List: [Behrend, R. (2006) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.074   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   1956 Artek (1969 TX1)          Discovered 1969-Oct-08 by Chernykh, L. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1969 TX1 = 1975 TA6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-07 10:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin