+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74495 (1999 CD127) Classification: Main-belt Asteroid          SPK-ID: 2074495 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2181529583556178 3.6304e-08   a 3.096788747307009 2.483e-08 au q 2.421215120679597 1.2311e-07 au i 18.77445614144112 5.1285e-06 deg node 112.4239847280276 1.5214e-05 deg peri 41.04181094106405 2.1684e-05 deg M 328.362926575457 1.6298e-05 deg tp 2459175.428107998888 (2020-Nov-21.92810800) 9.1347e-05 TDB period 1990.516570055006 5.45 2.394e-05 6.554e-08 d yr n .1808575750716066 2.1752e-09 deg/d Q 3.772362373934421 3.0247e-08 au   Orbit Determination Parameters    # obs. used (total)      970      data-arc span      7808 days (21.38 yr)      first obs. used      1998-12-01      last obs. used      2020-04-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52114      source      ORB      producer      Otto Matic      solution date      2020-May-20 14:05:32   Additional Information  Earth MOID = 1.46357 au   Jupiter MOID = 1.43031 au   T_jup = 3.106  [ 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 14.1   n/a MPO337819   diameter diameter 4.017 km 0.118 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.331   0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   74495 (1999 CD127)          Discovered 1999-Feb-11 by LINEAR at Socorro Reference: 20040415/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 CD127 = 1999 LY = 2001 PC17 = 2002 TS231  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-14 18:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin