+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   3890 Bunin (1976 YU5) Classification: Main-belt Asteroid          SPK-ID: 2003890 [ 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 .1402496082693164 3.4817e-08   a 2.330417578462323 8.4629e-09 au q 2.003577425979053 8.1542e-08 au i 5.214488719179056 3.2706e-06 deg node 259.5341048192301 3.8924e-05 deg peri 71.78386382986363 4.025e-05 deg M 176.3600449200383 1.1029e-05 deg tp 2458363.929148893418 (2018-Sep-02.42914889) 3.909e-05 TDB period 1299.418507759357 3.56 7.0783e-06 1.938e-08 d yr n .2770470005239215 1.5091e-09 deg/d Q 2.657257730945593 9.6499e-09 au   Orbit Determination Parameters    # obs. used (total)      2210      data-arc span      15860 days (43.42 yr)      first obs. used      1976-12-18      last obs. used      2020-05-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45742      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:56:16   Additional Information  Earth MOID = 1.00007 au   Jupiter MOID = 2.67339 au   T_jup = 3.553  [ 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 13.8   n/a MPO502190   diameter diameter 9.839 km 0.062 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   rotation period rot_per 13.39 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Stephens, R.D.; Warner, B.D. (2019) Minor Planet Bull. 45, 66-71.] geometric albedo albedo 0.058   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   3890 Bunin (1976 YU5)          Discovered 1976-Dec-18 by Chernykh, L. at Nauchnyj Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1976 YU5 = 1983 WX  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-24 22:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin