Parker Solar Probe Prepares for New Science, New Records on Fourth Solar OrbitPosted on 01/23/2020 11:00:40
NASA’s Parker Solar Probe began its fourth solar encounter today at 9:00 am EST, at a distance of about 23.3 million miles from the Sun’s surface. It will reach perihelion, its closest distance to our star, during this orbit on Jan. 29 at about 4:30 am EST.
The fourth perihelion will send the spacecraft within 11.6 million miles of the Sun, closer than its first three perihelia, which were at about 15 million miles from the Sun. The spacecraft’s four instrument suites will acquire data in this new environment, sampling this previously unexplored region around the Sun and potentially revealing new information about the solar wind and atmosphere.
Parker Solar Probe’s first three orbits of the Sun were all approximately the same distance from our star. Following the mission’s second Venus flyby on Dec. 26, 2019, and after one trajectory correction maneuver on Jan. 10, the spacecraft will set new records for distance
from the Sun and fastest
human-made object during its fourth perihelion; both records are currently held by Parker Solar Probe.
-Geoff Brown, Johns Hopkins APL
Parker Solar Probe began its fourth solar encounter on Jan. 23 at 9:00 am EST. This orbit will bring it within 11.6 million miles of the Sun.
Credit: NASA/Johns Hopkins APL/Steve Gribben