+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100525 (1997 CX8) Classification: Main-belt Asteroid          SPK-ID: 2100525 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .118698322994831 8.6128e-08   a 3.117789918920717 3.2647e-08 au q 2.747713484094637 2.8194e-07 au i 21.55530199950275 9.1394e-06 deg node 330.0072520200397 1.5138e-05 deg peri 31.53101625938271 3.1554e-05 deg M 221.3350304607248 2.9016e-05 deg tp 2459775.020575327788 (2022-Jul-14.52057533) 0.00016919 TDB period 2010.799180531526 5.51 3.1583e-05 8.647e-08 d yr n .1790332935707877 2.812e-09 deg/d Q 3.487866353746796 3.6522e-08 au   Orbit Determination Parameters    # obs. used (total)      399      data-arc span      9417 days (25.78 yr)      first obs. used      1994-08-10      last obs. used      2020-05-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64499      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:05:44   Additional Information  Earth MOID = 1.75939 au   Jupiter MOID = 1.9691 au   T_jup = 3.099  [ 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 14.71   n/a E2021B55   diameter diameter 7.322 km 0.330 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.048   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100525 (1997 CX8)          Discovered 1997-Feb-01 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1997 CX8 = 1994 PC11 = 2000 SR310  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-28 17:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin