+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   16722 (1995 WG7) Classification: Main-belt Asteroid          SPK-ID: 2016722 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO250377 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.2262631 n/a   a 3.1338872 n/a AU q 2.4248042 n/a AU i 17.79329 n/a deg node 245.92148 n/a deg peri 118.45518 n/a deg M 77.38702 n/a deg tp 2455964.8987681 (2012-Feb-07.39876810) n/a JED period 2026.3920680 5.55 n/a n/a d yr n 0.17765565 n/a deg/d Q 3.8429702 n/a AU   Orbit Determination Parameters    # obs. used (total)      544      first obs. used      1995-??-??      last obs. used      2013-01-17      # oppositions      14      planetary ephem.      DE403      condition code      0      fit RMS      0.52      data source      MPC:mpn      producer      MPCLINUX   Additional Information  T_jup = 3.100  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.6 mag n/a PDS3 (MPO 2915)   16722 (1995 WG7)          Discovered 1995-Nov-24 by Shimizu, Y., Urata, T. at Nachi-Katsuura (905) Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-25 21:33 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin