+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   190048 (2004 RU159) Classification: Main-belt Asteroid          SPK-ID: 2190048 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1593104876532914 4.7125e-08   a 2.69027482324956 2.4574e-08 au q 2.2616858292363 1.32e-07 au i 10.51609873838587 7.0192e-06 deg node 310.90511773 3.0294e-05 deg peri 332.2443798412313 3.8372e-05 deg M 310.3228354279673 2.3892e-05 deg tp 2459422.906613192730 (2021-Jul-27.40661319) 0.00010752 TDB period 1611.734112426754 4.41 2.2083e-05 6.046e-08 d yr n .2233619039420564 3.0604e-09 deg/d Q 3.118863817262819 2.8488e-08 au   Orbit Determination Parameters    # obs. used (total)      467      data-arc span      6673 days (18.27 yr)      first obs. used      2002-01-09      last obs. used      2020-04-17      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .5224      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 22:06:00   Additional Information  Earth MOID = 1.24913 au   Jupiter MOID = 2.0934 au   T_jup = 3.330  [ 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 15.66   n/a E2021B55   diameter diameter 4.471 km 0.732 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.073   0.029 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   190048 (2004 RU159)          Discovered 2004-Sep-10 by LINEAR at Socorro Reference: 20080819/Numbers.arc Last Updated: 2008-08-25 [ show close-approach data ] Alternate Designations  2004 RU159 = 2002 CG175  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 06:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin