+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   6454 (1991 UG1) Classification: Mars-crossing Asteroid          SPK-ID: 2006454 [ 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 .3960050270718757 1.0631e-07   a 2.755066151268609 3.9848e-08 AU q 1.664046105450675 2.8288e-07 AU i 29.70181901196836 1.1414e-05 deg node 65.80103028899853 1.6471e-05 deg peri 276.6548308761328 2.5957e-05 deg M 263.5210595022351 3.3561e-05 deg tp 2456848.137537756256 (2014-Jul-09.63753776) 0.00016369 JED period 1670.307662592806 4.57 3.6238e-05 9.921e-08 d yr n .2155291555336427 4.676e-09 deg/d Q 3.846086197086544 5.5628e-08 AU   Orbit Determination Parameters    # obs. used (total)      634      data-arc span      14367 days (39.33 yr)      first obs. used      1973-12-20      last obs. used      2013-04-21      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .54062      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:21:53   Additional Information  Earth MOID = .905 AU   T_jup = 3.049  [ 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 13.0 mag n/a PDS3 (MPC 28115)   6454 (1991 UG1)          Discovered 1991-Oct-29 by McNaught, R. H. at Siding Spring (413) Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1991 UG1 = 1973 YY  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-22 18:43 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin