Parker Solar Probe second flyby of Venus on 22 December 2019. The velocity decreased by 2.9 km/s to 26 km/s on 26 December (red circle).
<a href="//commons.wikimedia.org/wiki/User:Phoenix7777" title="User:Phoenix7777">Phoenix7777</a>
CC BY-SA 4.0
<p><span class="int-own-work" lang="en">Own work</span><br>Data source: <a rel="nofollow" class="external text" href="https://ssd.jpl.nasa.gov/?horizons">HORIZONS System</a>, JPL, NASA
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<ul><li><a rel="nofollow" class="external text" href="https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&amp;COMMAND='-96'&amp;MAKE_EPHEM='YES'&amp;TABLE_TYPE='VECTORS'&amp;START_TIME='2018-Aug-12%2008:17'&amp;STOP_TIME='2025-Aug-31%2009:12'&amp;STEP_SIZE='1%20h'&amp;CSV_FORMAT='YES'&amp;CENTER='500@10'&amp;REF_PLANE='ECLIPTIC'&amp;REF_SYSTEM='J2000'&amp;OUT_UNITS='AU-D'&amp;VEC_TABLE='2'&amp;OBJ_DATA='YES'">CSV file</a></li></ul>