+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11611 (1995 YQ) Classification: Main-belt Asteroid          SPK-ID: 2011611 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08258846823439543 1.5373e-08   a 2.987221930447153 1.1636e-08 au q 2.740511846935328 4.6006e-08 au i 11.83167941566516 5.5759e-07 deg node 117.3787332582992 5.3873e-06 deg peri 178.1756531361503 1.8799e-05 deg M 66.42361380648921 1.539e-05 deg tp 2458852.547741778682 (2020-Jan-04.04774178) 8.0651e-05 TDB period 1885.81749443203 5.16 1.1018e-05 3.017e-08 d yr n .1908986426644773 1.1154e-09 deg/d Q 3.233932013958976 1.2597e-08 au   Orbit Determination Parameters    # obs. used (total)      2027      data-arc span      10133 days (27.74 yr)      first obs. used      1993-05-14      last obs. used      2021-02-09      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48849      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:52:21   Additional Information  Earth MOID = 1.72261 au   Jupiter MOID = 1.96717 au   T_jup = 3.220  [ 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 13.33   n/a E2021B10   diameter diameter 7.696 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.172   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11611 (1995 YQ)          Discovered 1995-Dec-18 by JPL/GEODSS NEAT at Haleakala Reference: 19990928/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1995 YQ = 1998 HQ120 = 1998 LD3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jun-13 06:52 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin