+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15426 (1998 SW43) Classification: Outer Main-belt Asteroid          SPK-ID: 2015426 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1694070151083825 5.9591e-08   a 3.968355248770179 3.6876e-08 au q 3.29608803118634 2.3778e-07 au i 5.256274795276343 5.7023e-06 deg node 240.5401146010069 5.6317e-05 deg peri 136.5743774027274 5.7786e-05 deg M 263.8915269683991 1.531e-05 deg tp 2459771.356286484375 (2022-Jul-10.85628648) 0.00013042 TDB period 2887.448467141179 7.91 4.0247e-05 1.102e-07 d yr n .1246775497802843 1.7378e-09 deg/d Q 4.640622466354018 4.3123e-08 au   Orbit Determination Parameters    # obs. used (total)      1161      data-arc span      25063 days (68.62 yr)      first obs. used      1951-09-09      last obs. used      2020-04-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53377      source      ORB      producer      Otto Matic      solution date      2020-May-20 04:11:12   Additional Information  Earth MOID = 2.30088 au   Jupiter MOID = .898449 au   T_jup = 3.025  [ 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 12.9   n/a MPO435844   diameter diameter 14.142 km 0.527 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)   geometric albedo albedo 0.073   0.015 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)   15426 (1998 SW43)          Discovered 1998-Sep-26 by Beijing Schmidt CCD Asteroid Program at Xinglong Reference: 20000621/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 SW43 = 1990 TW4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-25 23:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin