+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   17875 (1999 AQ2) Classification: Main-belt Asteroid          SPK-ID: 2017875 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08736581192199498 3.7029e-08   a 2.267943251838627 7.7674e-09 au q 2.069802548248736 8.3629e-08 au i 5.751321116512889 3.8732e-06 deg node 18.48932744019555 3.2578e-05 deg peri 163.7304151570386 3.7209e-05 deg M 54.69098356435074 1.8489e-05 deg tp 2458810.977867174000 (2019-Nov-23.47786717) 6.3888e-05 TDB period 1247.517659598888 3.42 6.4088e-06 1.755e-08 d yr n .2885730692708191 1.4825e-09 deg/d Q 2.466083955428518 8.446e-09 au   Orbit Determination Parameters    # obs. used (total)      1890      data-arc span      13965 days (38.23 yr)      first obs. used      1982-03-24      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49215      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 18:16:56   Additional Information  Earth MOID = 1.07234 au   Jupiter MOID = 2.49058 au   T_jup = 3.603  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.3   n/a MPO365467   diameter diameter 3.540 km 0.092 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.323   0.052 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   17875 (1999 AQ2)          Discovered 1999-Jan-09 by Kobayashi, T. at Oizumi Reference: 20001013/Numbers.arc Last Updated: 2004-04-19 Alternate Designations  1999 AQ2 = 1982 FP2 = 1989 GO6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-05 14:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin