+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2004 UE) Classification: Apollo [NEO, PHA]          SPK-ID: 3257091 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .645309359045633 2.9206e-06   a 2.631814659058153 9.9485e-05 au q .9334800282944352 2.7602e-05 au i 14.58728323837007 0.00037052 deg node 225.5995187884561 0.001164 deg peri 217.4979161074056 0.0013797 deg M 277.8106796491538 0.057936 deg tp 2459556.536290588458 (2021-Dec-08.03629059) 0.27116 TDB period 1559.485637120555 4.27 0.088425 0.0002421 d yr n .2308453450489653 1.3089e-05 deg/d Q 4.330149289821871 0.00016368 au   Orbit Determination Parameters    # obs. used (total)      264      data-arc span      178 days      first obs. used      2004-09-12      last obs. used      2005-03-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      5      norm. resid. RMS      .37096      source      ORB      producer      Otto Matic      solution date      2021-Apr-14 22:26:50   Additional Information  Earth MOID = .0178537 au   Jupiter MOID = 1.17319 au   T_jup = 3.029  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 21.0   n/a MPO206087   rotation period rot_per 5.6 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Gandolfi, D.; Cigna, M.; Fulvio, D.; Blanco, C. (2009) Planet. Space Sci. 57, 1-9.] [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-16 02:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin