+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101564 (1999 AV17) Classification: Main-belt Asteroid          SPK-ID: 2101564 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .0870864154634973 3.8846e-08   a 2.722582437454389 1.4546e-08 au q 2.485482492172615 1.0662e-07 au i 3.891414549765024 4.3958e-06 deg node 304.1654807683851 6.0113e-05 deg peri 350.3314982223956 6.5722e-05 deg M 154.8835734859119 2.5205e-05 deg tp 2458494.551785244763 (2019-Jan-11.05178524) 0.0001149 TDB period 1640.854169309322 4.49 1.315e-05 3.6e-08 d yr n .2193979250158064 1.7583e-09 deg/d Q 2.959682382736164 1.5813e-08 au   Orbit Determination Parameters    # obs. used (total)      815      data-arc span      8526 days (23.34 yr)      first obs. used      1997-11-06      last obs. used      2021-03-11      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52381      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:37:23   Additional Information  Earth MOID = 1.46758 au   Jupiter MOID = 2.19275 au   T_jup = 3.349  [ 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 15.45   n/a E2021B55   diameter diameter 4.095 km 0.134 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.080   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101564 (1999 AV17)          Discovered 1999-Jan-11 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 AV17 = 2000 JD78  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-21 06:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin