+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1688260506049344 5.8409e-08   a 3.97751720434351 3.6348e-08 au q 3.306008683521015 2.3677e-07 au i 5.243286539031797 5.6727e-06 deg node 240.4393740292302 5.4943e-05 deg peri 135.8770515609526 5.6508e-05 deg M 289.538611157385 1.5605e-05 deg tp 2459767.607284062551 (2022-Jul-07.10728406) 0.0001311 TDB period 2897.453848355648 7.93 3.9717e-05 1.087e-07 d yr n .1242470178444105 1.7031e-09 deg/d Q 4.649025725166005 4.2485e-08 au   Orbit Determination Parameters    # obs. used (total)      1180      data-arc span      25125 days (68.79 yr)      first obs. used      1951-09-09      last obs. used      2020-06-23      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53289      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 00:57:37   Additional Information  Earth MOID = 2.30925 au   Jupiter MOID = .89478 au   T_jup = 3.024  [ 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 12.89   n/a E2021B10   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 ] 2021-Apr-15 12:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin