+ View the NASA Portal + Near-Earth Object (NEO) Project Search JPL JPL Small-Body Database Browser Search: [ help ]   180213 (2003 UM8) Classification: Main-belt Asteroid          SPK-ID: 2180213 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2455200.5 (2010-Jan-04.0) TDB Reference: MPO134233 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.1064082 n/a   a 2.1359974 n/a AU q 1.9087098 n/a AU i 4.32583 n/a deg node 331.54843 n/a deg peri 9.58305 n/a deg M 47.03399 n/a deg tp 2455051.5265689 (2009-Aug-08.02656890) n/a JED period 1140.2484715 3.12 n/a n/a d yr n 0.31572066 n/a deg/d Q 2.3632850 n/a AU   Orbit Determination Parameters    # obs. used (total)      110      first obs. used      1992-??-??      last obs. used      2008-03-10      # oppositions      6      planetary ephem.      DE403      quality code      1      fit RMS      0.41      data source      MPC:mpu      producer      MPC   Additional Information  T_jup = 3.707  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.9 mag n/a MPO134233   180213 (2003 UM8)           Discovered 2003-Oct-19 by Young, J. W. at Wrightwood (673) Reference: 20080321/Numbers.arc Last Updated: 2008-03-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2010-Feb-10 06:29 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin