+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07282806443046443 4.915e-08   a 2.575623418513028 9.6624e-09 au q 2.388045750240948 1.2257e-07 au i 1.628375400043241 4.2616e-06 deg node 65.84108216055924 0.00012677 deg peri 290.5919764429524 0.0001295 deg M 49.98284608900849 2.5915e-05 deg tp 2458990.876264574561 (2020-May-21.37626457) 0.00010871 TDB period 1509.80887760517 4.13 8.496e-06 2.326e-08 d yr n .2384407757431027 1.3418e-09 deg/d Q 2.763201086785108 1.0366e-08 au   Orbit Determination Parameters    # obs. used (total)      1702      data-arc span      11686 days (31.99 yr)      first obs. used      1989-03-05      last obs. used      2021-03-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50492      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:53:32   Additional Information  Earth MOID = 1.38227 au   Jupiter MOID = 2.54345 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 14.41   n/a E2021B10   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-Apr-16 18:03 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin