+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   180228 (2003 UQ135) Classification: Main-belt Asteroid          SPK-ID: 2180228 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1562655164428769 5.261e-08   a 2.215732932103629 8.7005e-09 au q 1.869490281168966 1.1853e-07 au i 4.964635012711512 5.7104e-06 deg node 338.1024437589701 4.5021e-05 deg peri 340.9296278512744 4.6798e-05 deg M 136.1461132265785 1.3458e-05 deg tp 2458744.906738079439 (2019-Sep-18.40673808) 4.4307e-05 TDB period 1204.687893061226 3.30 7.0956e-06 1.943e-08 d yr n .2988325873228509 1.7601e-09 deg/d Q 2.561975583038293 1.006e-08 au   Orbit Determination Parameters    # obs. used (total)      444      data-arc span      6328 days (17.33 yr)      first obs. used      2003-09-21      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56721      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 11:42:57   Additional Information  Earth MOID = .855436 au   Jupiter MOID = 2.72699 au   T_jup = 3.633  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.0   n/a MPO436891   180228 (2003 UQ135)          Discovered 2003-Oct-21 by NEAT at Palomar Reference: 20080321/Numbers.arc Last Updated: 2008-03-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-12 23:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin