+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   1619 Ueta (1953 TA) Classification: Main-belt Asteroid          SPK-ID: 2001619 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1753711776658356 3.7705e-08   a 2.241601941168038 5.529e-09 au q 1.848489568887376 8.3444e-08 au i 6.209934836029759 4.0233e-06 deg node 61.47821907458498 3.1167e-05 deg peri 328.1186741714446 3.2856e-05 deg M 299.7547342078205 1.3093e-05 deg tp 2459205.642947840542 (2020-Dec-22.14294784) 4.5041e-05 TDB period 1225.846715945302 3.36 4.5354e-06 1.242e-08 d yr n .2936745641337293 1.0865e-09 deg/d Q 2.6347143134487 6.4986e-09 au   Orbit Determination Parameters    # obs. used (total)      2516      data-arc span      32664 days (89.43 yr)      first obs. used      1931-01-11      last obs. used      2020-06-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41152      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:33:49   Additional Information  Earth MOID = .8576 au   Jupiter MOID = 2.80321 au   T_jup = 3.606  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.2   n/a MPO473786   diameter diameter 8.965 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 2.720 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Higgins, D. (2011) Minor Planet Bull. 38, 41-46.] [Stephens, R.D. (2011) Minor Planet Bull. 38, 23-24.] [Kryszczynska, A.; Colas, F.; Polinska, M.; Hirsch, R.; et al. (2012) Astron. Astrophys. 546, A72.] [Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.] [Durech, J.; Hanus, J.; Oszkiewsicz, D.; Vanco, R. (2016) Astron. Astrophys. 587, A48.] geometric albedo albedo 0.479   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   B-V BV 0.900   0.035 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=18.26 deg. U-B UB 0.546   0.054 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=18.26 deg. Tholen spectral type spec_T S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 7 color indices 1619 Ueta (1953 TA)          Discovered 1953-Oct-11 by Mitani, T. at Kwasan Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1953 TA = 1926 RR = 1931 AO = 1940 YJ = 1951 AG1 = 1978 GM  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-02 20:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin