+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3693 Barringer (1982 RU) Classification: Main-belt Asteroid          SPK-ID: 2003693 [ 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 42 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2033581631569364 3.814e-08   a 3.149081614709543 1.6847e-08 au q 2.508690161910931 1.23e-07 au i 14.91140297662625 4.167e-06 deg node 178.8128450581062 1.4325e-05 deg peri 184.1874919205002 1.6937e-05 deg M 283.1671714500754 1.1102e-05 deg tp 2459436.130844879624 (2021-Aug-09.63084488) 6.4923e-05 TDB period 2041.147086687837 5.59 1.6379e-05 4.484e-08 d yr n .1763714150478841 1.4153e-09 deg/d Q 3.789473067508154 2.0272e-08 au   Orbit Determination Parameters    # obs. used (total)      2542      data-arc span      24084 days (65.94 yr)      first obs. used      1954-11-24      last obs. used      2020-11-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .43432      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:13:33   Additional Information  Earth MOID = 1.50635 au   Jupiter MOID = 1.66893 au   T_jup = 3.124  [ 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 11.87   n/a E2021B10   diameter diameter 27.494 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 6.626 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Pray, D. (2005) Minor Planet Bull. 32, 8-9.] [Hanus, J.; Durech, J.; Oszkiewicz, D.A.; Behrend, R.; et al. (2016) Astron. Astrophys. 586, A108.] geometric albedo albedo 0.049   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   3693 Barringer (1982 RU)          Discovered 1982-Sep-15 by Bowell, E. at Flagstaff (AM) Discovered at the Anderson Mesa station, which is operated by the Lowell Observatory. Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 06:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin