+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   201684 (2003 UC104) Classification: Main-belt Asteroid          SPK-ID: 2201684 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0715637383319179 6.2687e-08   a 2.731995570302245 2.2213e-08 au q 2.536483754185177 1.646e-07 au i 11.6310692090081 5.4125e-06 deg node 294.1825966574057 2.9653e-05 deg peri 229.0233687051954 4.7138e-05 deg M 119.6778283655492 3.8531e-05 deg tp 2458452.185649516309 (2018-Nov-29.68564952) 0.00017512 TDB period 1649.371223307983 4.52 2.0116e-05 5.507e-08 d yr n .2182649939035453 2.6619e-09 deg/d Q 2.927507386419314 2.3802e-08 au   Orbit Determination Parameters    # obs. used (total)      418      data-arc span      9031 days (24.73 yr)      first obs. used      1996-02-17      last obs. used      2020-11-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .62362      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 05:21:07   Additional Information  Earth MOID = 1.56262 au   Jupiter MOID = 2.15678 au   T_jup = 3.320  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.4   n/a MPO475687   diameter diameter 2.860 km 0.513 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.180   0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   201684 (2003 UC104)          Discovered 2003-Oct-17 by LONEOS at Anderson Mesa Reference: 20081212/Numbers.arc Last Updated: 2008-12-12 [ show close-approach data ] Alternate Designations  2003 UC104 = 2002 PZ14  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-23 17:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin