+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08291237201533357 4.8282e-08   a 2.98838230808542 1.6637e-08 au q 2.740608442433401 1.5165e-07 au i 11.83148519506828 4.4844e-06 deg node 117.3776990120594 2.1674e-05 deg peri 178.3121713722487 3.6626e-05 deg M 28.10492308454774 2.855e-05 deg tp 2458853.189887181898 (2020-Jan-04.68988718) 0.00014984 TDB period 1886.916411583202 5.17 1.5757e-05 4.314e-08 d yr n .1907874656185458 1.5932e-09 deg/d Q 3.23615617373744 1.8016e-08 au   Orbit Determination Parameters    # obs. used (total)      1477      data-arc span      9623 days (26.35 yr)      first obs. used      1993-05-14      last obs. used      2019-09-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52048      source      ORB      producer      Otto Matic      solution date      2020-Feb-22 20:06:00   Additional Information  Earth MOID = 1.72469 au   Jupiter MOID = 1.96608 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 13.3   n/a MPO449026   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 ] 2020-Jul-07 07:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin