+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16700 Seiwa (1995 DZ) Classification: Main-belt Asteroid          SPK-ID: 2016700 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06699851458482516 2.665e-08   a 2.272975460959322 6.9343e-09 au q 2.12068948138729 6.1676e-08 au i 3.822392611494291 3.077e-06 deg node 41.94037623634026 5.0357e-05 deg peri 42.93380918028998 5.781e-05 deg M 260.8698057378165 2.9139e-05 deg tp 2459545.162476337748 (2021-Nov-26.66247634) 0.00010198 TDB period 1251.672029951051 3.43 5.7278e-06 1.568e-08 d yr n .2876152789114241 1.3162e-09 deg/d Q 2.425261440531355 7.3989e-09 au   Orbit Determination Parameters    # obs. used (total)      2231      data-arc span      14578 days (39.91 yr)      first obs. used      1981-01-08      last obs. used      2020-12-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48192      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:39:15   Additional Information  Earth MOID = 1.13809 au   Jupiter MOID = 2.68876 au   T_jup = 3.605  [ 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 14.55   n/a E2021B10   diameter diameter 2.810 km 0.495 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.426   0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16700 Seiwa           Discovered 1995 Feb. 22 by T. Kobayashi at Oizumi. Seiwa village, where the Seiwa-Kogen public observatory is located, is in the center of the island of Kyushu. The village is famous for its Bunraku puppet shows. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020427/MPCPages.arc Last Updated: 2003-10-02 Alternate Designations  1995 DZ = 1981 AD3 = 1988 EH2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-15 06:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin