+ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07278944139781877 4.9565e-08   a 2.575369344416582 9.9447e-09 au q 2.387909648443432 1.2358e-07 au i 1.62841969255355 4.282e-06 deg node 65.84045190264283 0.0001385 deg peri 290.4868168321827 0.00014107 deg M 2.385933040833764 2.6356e-05 deg tp 2458990.495083688339 (2020-May-20.99508369) 0.00011052 TDB period 1509.585478953448 4.13 8.7438e-06 2.394e-08 d yr n .2384760618190218 1.3813e-09 deg/d Q 2.762829040389732 1.0669e-08 au   Orbit Determination Parameters    # obs. used (total)      1540      data-arc span      11579 days (31.70 yr)      first obs. used      1989-03-05      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5147      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 02:46:37   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 ] 2021-Jan-28 02:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin