+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   15405 (1997 WJ7) Classification: Main-belt Asteroid          SPK-ID: 2015405 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2064833043738639 5.9555e-08   a 2.728694604543604 2.4252e-08 AU q 2.165264725970307 1.646e-07 AU i 2.020681969923176 6.1515e-06 deg node 264.2017046995305 0.00018492 deg peri 90.96021898278751 0.0001857 deg M 191.252566787168 1.7245e-05 deg tp 2457172.230207383560 (2015-May-29.73020738) 8.4519e-05 JED period 1646.382818206655 4.51 2.1949e-05 6.009e-08 d yr n .2186611740713711 2.9151e-09 deg/d Q 3.292124483116901 2.9259e-08 AU   Orbit Determination Parameters    # obs. used (total)      805      data-arc span      8926 days (24.44 yr)      first obs. used      1988-11-11      last obs. used      2013-04-20      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .59579      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:59:14   Additional Information  Earth MOID = 1.16132 AU   T_jup = 3.323  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.0 mag n/a PDS3 (MPO 881)   15405 (1997 WJ7)          Discovered 1997-Nov-19 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905) Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1997 WJ7 = 1988 VZ10 = 1992 PM4  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-21 06:53 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin