+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100522 (1997 CA) Classification: Main-belt Asteroid          SPK-ID: 2100522 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .110786717337783 3.9792e-08   a 3.030830482075249 2.2423e-08 au q 2.695054722158842 1.1462e-07 au i 3.212135996232302 4.3842e-06 deg node 303.309924455436 8.1786e-05 deg peri 146.4335124667689 8.4972e-05 deg M 206.3700881156488 2.5403e-05 deg tp 2459822.958848250103 (2022-Aug-31.45884825) 0.00014068 TDB period 1927.262612719082 5.28 2.1388e-05 5.856e-08 d yr n .1867934331440661 2.073e-09 deg/d Q 3.366606241991656 2.4908e-08 au   Orbit Determination Parameters    # obs. used (total)      632      data-arc span      8547 days (23.40 yr)      first obs. used      1997-02-01      last obs. used      2020-06-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54805      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:05:45   Additional Information  Earth MOID = 1.71235 au   Jupiter MOID = 1.80863 au   T_jup = 3.231  [ 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 15.0   n/a MPO474880   diameter diameter 6.269 km 0.420 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.049   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100522 (1997 CA)          Discovered 1997-Feb-01 by Sarounova, L. at Ondrejov Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1997 CA = 2000 SK300  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Dec-02 01:22 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin