+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   2165 Young (1956 RJ) Classification: Main-belt Asteroid          SPK-ID: 2002165 [ 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 34 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1761036764586923 3.3626e-08   a 3.126432497192744 1.3836e-08 au q 2.575856240237172 1.0417e-07 au i .9424973795717603 4.0946e-06 deg node 19.13217915549975 0.00022373 deg peri 24.01291390745311 0.00022401 deg M 119.1940319192082 1.2149e-05 deg tp 2458331.965196636234 (2018-Aug-01.46519664) 6.6433e-05 TDB period 2019.165937553717 5.53 1.3403e-05 3.67e-08 d yr n .1782914387096641 1.1835e-09 deg/d Q 3.677008754148317 1.6272e-08 au   Orbit Determination Parameters    # obs. used (total)      2825      data-arc span      33149 days (90.76 yr)      first obs. used      1929-10-27      last obs. used      2020-07-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45236      source      ORB      producer      Otto Matic      solution date      2020-Aug-24 22:46:40   Additional Information  Earth MOID = 1.58474 au   Jupiter MOID = 1.73261 au   T_jup = 3.190  [ 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 11.4   n/a MPO502174   diameter diameter 27.115 km 0.284 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.073   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   2165 Young (1956 RJ)          Discovered 1956-Sep-07 by Goethe Link Observatory at Brooklyn Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1956 RJ = 1929 UD = 1942 DD = 1956 SF = 1973 QT = 1973 UN3 = 1976 GU5 = 1978 QA  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-22 08:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin