+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   13754 (1998 SB63) Classification: Main-belt Asteroid          SPK-ID: 2013754 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .04865929283038405 4.1343e-08   a 2.652704667323048 1.399e-08 au q 2.523625934123249 1.0921e-07 au i 22.37397072795398 5.0382e-06 deg node 22.85574868754914 1.2282e-05 deg peri 60.37250683842881 5.5076e-05 deg M 301.6203873772895 5.3378e-05 deg tp 2459256.411903571982 (2021-Feb-10.91190357) 0.00023422 TDB period 1578.090041146904 4.32 1.2484e-05 3.418e-08 d yr n .2281238653140247 1.8047e-09 deg/d Q 2.781783400522846 1.4671e-08 au   Orbit Determination Parameters    # obs. used (total)      1857      data-arc span      14128 days (38.68 yr)      first obs. used      1981-11-25      last obs. used      2020-07-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .40658      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:46:09   Additional Information  Earth MOID = 1.57403 au   Jupiter MOID = 2.35552 au   T_jup = 3.280  [ 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 12.3   n/a MPO400140   diameter diameter 10.238 km 0.152 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.169   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   13754 (1998 SB63)          Discovered 1998-Sep-25 by Beijing Schmidt CCD Asteroid Program at Xinglong Reference: 20000222/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 SB63 = 1981 WZ3 = 1992 GA2 = 1992 GA6  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-21 02:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin