+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   19744 (2000 AC176) Classification: Main-belt Asteroid          SPK-ID: 2019744 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1342011573152661 1.8069e-08   a 2.719640058706056 9.3695e-09 au q 2.354661215346745 4.8464e-08 au i 7.531931118422917 1.1769e-06 deg node 190.1488121928208 5.2385e-06 deg peri 68.90588336070978 1.2453e-05 deg M 87.44547223086639 8.2329e-06 deg tp 2458802.575757978873 (2019-Nov-15.07575798) 3.7167e-05 TDB period 1638.194905613886 4.49 8.4657e-06 2.318e-08 d yr n .2197540712441027 1.1356e-09 deg/d Q 3.084618902065367 1.0627e-08 au   Orbit Determination Parameters    # obs. used (total)      2339      data-arc span      26018 days (71.23 yr)      first obs. used      1949-11-19      last obs. used      2021-02-12      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .45034      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 03:05:51   Additional Information  Earth MOID = 1.35117 au   Jupiter MOID = 1.98968 au   T_jup = 3.334  [ 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 13.36   n/a E2021B10   diameter diameter 10.626 km 0.164 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   geometric albedo albedo 0.090   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   19744 (2000 AC176)          Discovered 2000-Jan-07 by LINEAR at Socorro Reference: 20001211/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2000 AC176 = 1983 GF1 = 1998 SA124  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-19 15:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin