User:AzseicsoK/Parker Table

Scheduled events

Year	Date	Event	Distance from Sun (Gm)a	Speed (km/s)	Orbital period (days)	Notes
			Flyby altitude over Venusb	Leg of Parker's orbitc	Inside/Outside orbit of Venusd
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
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.

^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, dated 2014. 2548 km comes to 1583 mi. NASA's and John's Hopkins's press releases (identical), say "...came within about 1500 miles of Venus' surface ..." A NASA blog 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.