+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   16792 (1997 AK13) Classification: Main-belt Asteroid          SPK-ID: 2016792 [ 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 40 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1572570597963851 1.9362e-08   a 3.163706714311831 1.6151e-08 au q 2.666191498361071 6.2224e-08 au i 13.44030611586983 7.4732e-07 deg node 92.32455139090219 2.0139e-06 deg peri 49.6378827433218 5.7805e-06 deg M 81.53538136106064 7.691e-06 deg tp 2458734.982129777773 (2019-Sep-08.48212978) 4.2172e-05 TDB period 2055.382957465838 5.63 1.574e-05 4.309e-08 d yr n .1751498418785462 1.3413e-09 deg/d Q 3.661221930262592 1.8691e-08 au   Orbit Determination Parameters    # obs. used (total)      2085      data-arc span      8615 days (23.59 yr)      first obs. used      1997-01-11      last obs. used      2020-08-13      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .44803      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:41:43   Additional Information  Earth MOID = 1.70233 au   Jupiter MOID = 1.54156 au   T_jup = 3.143  [ 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 12.53   n/a E2021B10   diameter diameter 12.365 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.116   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   16792 (1997 AK13)          Discovered 1997-Jan-11 by Kobayashi, T. at Oizumi Reference: 20000913/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 AK13 = 1998 KA49  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 09:07 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin