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User:AzseicsoK/Parker Table

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Scheduled events[1][2]: 31 [3]
Year Date Event Distance
from Sun (Gm)a
Speed
(km/s)
Orbital period
(days)
Notes
Flyby altitude
over Venus
b
Leg of
Parker's orbit
c
Inside/Outside
orbit of Venus
d
2018 Aug 12
07:31 UTC
Launch 151.6 174e
Oct 3
08:44 UTC
Venus flyby #1 2548 kmf Inbound Inside Flybys 1 and 2 occur at the
same point in Venus's orbit
Nov 6
03:27 UTC
Perihelion #1 24.8g 95 150 Solar encounter phase
Oct. 31 - Nov. 11[4]
2019 Apr 4 Perihelion #2 24.8 95 150
Sep 1 Perihelion #3 24.8 95 150
Dec 26 Venus flyby #2 3023 km Inbound Inside Flybys 1 and 2 occur at the
same point in Venus's orbit
2020 Jan 29 Perihelion #4 19.4 109 130
Jun 7 Perihelion #5 19.4 109 130
Jul 11 Venus flyby #3 834 km Outbound Outside Flybys 3 and 4 occur at the
same point in Venus's orbit
Sep 27 Perihelion #6 14.2 129 112.5
2021 Jan 17 Perihelion #7 14.2 129 112.5
Feb 20 Venus flyby #4 2392 km Outbound Outside Flybys 3 and 4 occur at the
same point in Venus's orbit
Apr 29 Perihelion #8 11.1 147 102
Aug 9 Perihelion #9 11.1 147 102
Oct 16 Venus flyby #5 3786 km Inbound Inside Flybys 5 and 6 occur at the
same point in Venus's orbit
Nov 21 Perihelion #10 9.2 163 96
2022 Feb 25 Perihelion #11 9.2 163 96
Jun 1 Perihelion #12 9.2 163 96
Sep 6 Perihelion #13 9.2 163 96
Dec 11 Perihelion #14 9.2 163 96
2023 Mar 17 Perihelion #15 9.2 163 96
Jun 22 Perihelion #16 9.2 163 96
Aug 21 Venus flyby #6 3939 km Inbound Inside Flybys 5 and 6 occur at the
same point in Venus's orbit
Sep 27 Perihelion #17 7.9 176 92
Dec 29 Perihelion #18 7.9 176 92
2024 Mar 30 Perihelion #19 7.9 176 92
Jun 30 Perihelion #20 7.9 176 92
Sep 30 Perihelion #21 7.9 176 92
Nov 6 Venus flyby #7 317 km Outbound Outside
Dec 24 Perihelion #22 6.9 192 88
2025 Mar 22 Perihelion #23 6.9 192 88
Jun 19 Perihelion #24 6.9 192 88
Sep 15 Perihelion #25 6.9 192 88
Dec 12 Perihelion #26 6.9 192 88

^a The perihelion distances above are from the center of the Sun. For altitude above the surface, subtract one solar radius ≈ 0.7 Gm.

^b Details on Venus flybys from Guo et al.[5]: 6 

^c Inbound indicates that the Venus flyby will take place after Parker's aphelion (in the case of the first flyby, after its launch), on its way to perihelion. Outbound indicates that the Venus flyby will take place after Parker's perihelion, on its way to aphelion.

^d Inside indicates that the probe will pass in between Venus and the Sun. Outside indicates that the probe will pass beyond Venus from the Sun; the probe will briefly pass through Venus's shadow in those instances.

^e The first orbital period of 174 days was the orbit established by the launch and course adjustments, and was the orbit the probe would have taken had nothing further happened to change it. That orbit was, per mission plan, never completed. On the probe's first inbound course towards the Sun, it made its first planned encounter with Venus, which shortened its orbit considerably.

^f The altitude is from the source cited,[5]: 6  dated 2014. 2548 km comes to 1583 mi. NASA's[6] and John's Hopkins's[7] press releases (identical), say "...came within about 1500 miles of Venus' surface ..." A NASA blog[8] says, "...completed its flyby of Venus at a distance of about 1,500 miles ..." Other news reports, presumably taking that information, also provide a figure of 2414 km. But neither the NASA/Hopkins press release nor the blog gives a figure in kilometers.
Both the NASA and Hopkins press releases say that the flyby reduced the speed of the Parker Solar Probe (relative to the Sun) by about 10 percent, or 7,000 mph. This altered the orbit, bringing perihelion about 4 million miles closer to the Sun than it would have been without the gravity assist.

^g By way of comparison, the planet Mercury orbits the Sun at a distance varying from about 46.0 Gm (46,001,200 km) at its closest to about 69.8 Gm (69,816,900 km) at its farthest.

Reference below will appear as footnote 5, if and when this trial draft is inserted into the article.

Guo, Yanping; Ozimek, Martin; Mcadams, James; Shyong, Wen-Jong (May 2014). Solar Probe Plus Mission Design Overview and Mission Profile. International Symposium on Space Flight Dynamics, At Laurel, MD. ResearchGate.

  1. ^ Cite error: The named reference the_mission was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference Fox 2016 was invoked but never defined (see the help page).
  3. ^ "HORIZONS System". Jet Propulsion Laboratoy, NASA. Data file
  4. ^ "Parker Solar Probe Reports First Telemetry, Acquisition of Science Data Since Perihelion". Parker Solar Probe News Center. Johns Hopkins University Applied Physics Laboratory. 20 November 2018. Retrieved 18 December 2018.
  5. ^ a b Cite error: The named reference mission design was invoked but never defined (see the help page).
  6. ^ "Parker Solar Probe Changed the Game Before it Even Launched". Parker Solar Probe News Center. Johns Hopkins University Applied Physics Laboratory. 4 October 2018. Retrieved 26 December 2018.
  7. ^ "How A Change in Mission Design Unlocked the Journey to the Sun". Parker Solar Probe Mission News. NASA. 4 October 2018. Retrieved 26 December 2018. {{cite news}}: Cite has empty unknown parameter: |1= (help)
  8. ^ "Parker Solar Probe Successfully Completes First Venus Flyby". NASA Blogs - Parker Solar Probe. NASA. 3 October 2018. Retrieved 26 December 2018.