+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58179 (1990 UN3) Classification: Main-belt Asteroid          SPK-ID: 2058179 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2300101317675562 3.4415e-08   a 2.353961239994537 7.4694e-09 au q 1.812526305007674 8.042e-08 au i 5.205651486794092 3.5287e-06 deg node 156.4838031500838 4.395e-05 deg peri 233.6263858916022 4.4746e-05 deg M 74.92643550822771 7.6285e-06 deg tp 2458725.944619091697 (2019-Aug-30.44461909) 2.7906e-05 TDB period 1319.159739236966 3.61 6.2788e-06 1.719e-08 d yr n .27290099090519 1.2989e-09 deg/d Q 2.895396174981401 9.1874e-09 au   Orbit Determination Parameters    # obs. used (total)      950      data-arc span      10801 days (29.57 yr)      first obs. used      1990-10-16      last obs. used      2020-05-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48147      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:52:02   Additional Information  Earth MOID = .823207 au   Jupiter MOID = 2.55912 au   T_jup = 3.514  [ 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 15.7   n/a MPO449375   diameter diameter 4.031 km 0.176 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.043   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58179 (1990 UN3)          Discovered 1990-Oct-16 by Elst, E. W. at La Silla Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1990 UN3 = 2001 XV28  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 17:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin