+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11646 (1997 BZ1) Classification: Main-belt Asteroid          SPK-ID: 2011646 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07278944208145596 4.9591e-08   a 2.575369349498712 1.2085e-08 au q 2.387909651395019 1.2376e-07 au i 1.628420272134278 4.3904e-06 deg node 65.84051627352027 0.00016615 deg peri 290.4867621537428 0.00016873 deg M 2.38592035830294 3.1334e-05 deg tp 2458990.495136840292 (2020-May-20.99513684) 0.00013137 TDB period 1509.585483421881 4.13 1.0625e-05 2.909e-08 d yr n .2384760611131231 1.6785e-09 deg/d Q 2.762829047602406 1.2964e-08 au   Orbit Determination Parameters    # obs. used (total)      1280      data-arc span      11475 days (31.42 yr)      first obs. used      1989-03-05      last obs. used      2020-08-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55247      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:26:22   Additional Information  Earth MOID = 1.38382 au   Jupiter MOID = 2.54448 au   T_jup = 3.423  [ 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 14.3   n/a MPO435809   diameter diameter 3.266 km 0.784 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.346   0.174 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11646 (1997 BZ1)          Discovered 1997-Jan-29 by Kobayashi, T. at Oizumi Reference: 19990928/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 BZ1 = 1989 EQ10 = 1991 VD17  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-28 00:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin