+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3245 Jensch (1973 UL5) Classification: Main-belt Asteroid          SPK-ID: 2003245 [ 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 .1636833001364471 3.1799e-08   a 3.120999963901838 1.3669e-08 au q 2.610144390084653 9.7349e-08 au i .3295673351632665 4.0311e-06 deg node 348.2877467991528 0.00060647 deg peri 82.76356892607809 0.00060661 deg M 120.4734887687908 1.2633e-05 deg tp 2458326.549408610477 (2018-Jul-27.04940861) 6.9139e-05 TDB period 2013.905427490872 5.51 1.3231e-05 3.622e-08 d yr n .1787571526874152 1.1744e-09 deg/d Q 3.631855537719022 1.5907e-08 au   Orbit Determination Parameters    # obs. used (total)      2219      data-arc span      17029 days (46.62 yr)      first obs. used      1973-10-27      last obs. used      2020-06-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .50774      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:55:20   Additional Information  Earth MOID = 1.62472 au   Jupiter MOID = 1.65646 au   T_jup = 3.195  [ 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 13.2   n/a MPO337276   diameter diameter 12.696 km 0.919 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.052   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3245 Jensch (1973 UL5)          Discovered 1973-Oct-27 by Borngen, F. and Kirsch, K. at Tautenburg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1973 UL5 = 1981 EJ39  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-21 07:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin