+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15485 (1999 CY53) Classification: Main-belt Asteroid          SPK-ID: 2015485 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1457180030368941 3.1131e-08   a 3.130473515386994 1.51e-08 au q 2.674307166164915 9.9699e-08 au i 2.652160072964849 3.5093e-06 deg node 94.18387283994512 0.0001013 deg peri 18.73252405822938 0.00010282 deg M 12.13374216401653 1.6252e-05 deg tp 2459132.312347518093 (2020-Oct-09.81234752) 9.1334e-05 TDB period 2023.081961168079 5.54 1.4637e-05 4.007e-08 d yr n .1779463249191074 1.2875e-09 deg/d Q 3.586639864609072 1.73e-08 au   Orbit Determination Parameters    # obs. used (total)      1662      data-arc span      14289 days (39.12 yr)      first obs. used      1982-01-30      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .51512      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:59:52   Additional Information  Earth MOID = 1.69092 au   Jupiter MOID = 1.52169 au   T_jup = 3.195  [ 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 13.78   n/a E2021B10   diameter diameter 10.111 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.069   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15485 (1999 CY53)          Discovered 1999-Feb-10 by LINEAR at Socorro Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 CY53 = 1982 BR15 = 1997 WK54  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 02:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin