+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17624 (1996 AT) Classification: Main-belt Asteroid          SPK-ID: 2017624 [ 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 33 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1057945912294623 2.9221e-08   a 2.240907778497291 6.7081e-09 au q 2.003831856088247 6.7935e-08 au i 3.575530399534921 3.2435e-06 deg node 125.6817832861467 4.8246e-05 deg peri 156.9985982925529 5.0851e-05 deg M 348.8260820880212 1.5732e-05 deg tp 2459238.530967927662 (2021-Jan-24.03096793) 5.3572e-05 TDB period 1225.27734334622 3.35 5.5017e-06 1.506e-08 d yr n .2938110314003224 1.3193e-09 deg/d Q 2.477983700906334 7.4177e-09 au   Orbit Determination Parameters    # obs. used (total)      2040      data-arc span      23998 days (65.70 yr)      first obs. used      1954-10-31      last obs. used      2020-07-14      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .50697      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 02:08:44   Additional Information  Earth MOID = .986051 au   Jupiter MOID = 2.62631 au   T_jup = 3.625  [ 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 14.64   n/a E2021B10   diameter diameter 2.750 km 0.137 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.445   0.115 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17624 (1996 AT)          Discovered 1996-Jan-10 by Kobayashi, T. at Oizumi Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1996 AT = 1976 DD1 = 1993 DG3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 12:04 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin