+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   121514 (1999 UJ7) Classification: Mars-crossing Asteroid          SPK-ID: 2121514 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: MPO245024 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e 0.0392950 n/a   a 1.5245294 n/a AU q 1.4646230 n/a AU i 16.74860 n/a deg node 347.38708 n/a deg peri 48.35302 n/a deg M 66.29191 n/a deg tp 2456273.8922845 (2012-Dec-12.39228450) n/a JED period 687.5466040 1.88 n/a n/a d yr n 0.52360087 n/a deg/d Q 1.5844358 n/a AU   Orbit Determination Parameters    # obs. used (total)      353      first obs. used      1955-??-??      last obs. used      2012-11-01      # oppositions      9      planetary ephem.      DE403      condition code      1      fit RMS      0.48      data source      MPC:mpu      producer      MPCLINUX   Additional Information  T_jup = 4.449  [ 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 MPO245024   121514 (1999 UJ7)          Discovered 1999-Oct-30 by LINEAR at Socorro (704) Reference: 20060314/Numbers.arc Last Updated: 2006-03-23 Alternate Designations  1999 UJ7 = 2002 AC180  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-19 12:25 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin