+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   20925 (9596 P-L) Classification: Main-belt Asteroid          SPK-ID: 2020925 [ 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 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2066229361503998 3.8446e-08   a 3.166676286459107 1.9913e-08 au q 2.512368334313082 1.1895e-07 au i 9.732694267811841 4.4949e-06 deg node 175.9626988556065 2.5063e-05 deg peri 270.5718516144194 2.7388e-05 deg M 179.5542500710831 1.1863e-05 deg tp 2457973.909785316304 (2017-Aug-08.40978532) 6.3357e-05 TDB period 2058.277524145611 5.64 1.9414e-05 5.315e-08 d yr n .1749035277200706 1.6497e-09 deg/d Q 3.820984238605132 2.4027e-08 au   Orbit Determination Parameters    # obs. used (total)      853      data-arc span      21795 days (59.67 yr)      first obs. used      1960-10-17      last obs. used      2020-06-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53655      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:59:53   Additional Information  Earth MOID = 1.55177 au   Jupiter MOID = 1.58341 au   T_jup = 3.148  [ 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 14.3   n/a MPO313586   diameter diameter 8.172 km 0.282 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.050   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   20925 (9596 P-L)          Discovered 1960-Oct-22 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: 20010109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  9596 P-L = 1999 RD80 = 2000 UW75  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-26 04:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin