+ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0825884459889433 2.873e-08   a 2.98722194021475 1.3491e-08 au q 2.740511922348337 8.6016e-08 au i 11.831678131 3.4171e-06 deg node 117.3787357902909 1.7948e-05 deg peri 178.1756203780208 3.4331e-05 deg M 66.42364083851304 2.7405e-05 deg tp 2458852.547598468019 (2020-Jan-04.04759847) 0.0001445 TDB period 1885.81750368138 5.16 1.2776e-05 3.498e-08 d yr n .1908986417281787 1.2932e-09 deg/d Q 3.233931958081162 1.4606e-08 au   Orbit Determination Parameters    # obs. used (total)      1962      data-arc span      10110 days (27.68 yr)      first obs. used      1993-05-14      last obs. used      2021-01-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49384      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 02:01:31   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-Mar-02 21:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin