+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   173222 (1998 UQ8) Classification: Main-belt Asteroid          SPK-ID: 2173222 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO257780 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.3128047 n/a   a 2.6649439 n/a AU q 1.8313369 n/a AU i 4.09040 n/a deg node 70.29465 n/a deg peri 331.88924 n/a deg M 105.17299 n/a deg tp 2455936.2710114 (2012-Jan-09.77101140) n/a JED period 1589.0242914 4.35 n/a n/a d yr n 0.22655412 n/a deg/d Q 3.4985509 n/a AU   Orbit Determination Parameters    # obs. used (total)      126      first obs. used      1998-??-??      last obs. used      2013-03-14      # oppositions      8      planetary ephem.      DE403      condition code      0      fit RMS      0.56      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 3.309  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.4 mag n/a MPO257780   173222 (1998 UQ8)          Discovered 1998-Oct-17 by BAO Schmidt CCD Asteroid Program at Xinglong (327) Reference: 20080122/Numbers.arc Last Updated: 2008-01-28 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-20 08:30 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin