Parker Solar Probe

Spacecraft properties
ManufacturerApplied Physics Laboratory
Launch mass685 kg 
Dry mass555 kg 
Propellant 85 (52.7?) kg hydrazine
Dimensions1.0 m × 3.0 m × 2.3 m
Power343 W (at closest approach)

Credit: Jef Castro/

Above the surface, the corona (illustrated here) extends for millions of miles and roils with plasma. Eventually, it continues outward as the solar wind, a supersonic stream of plasma permeating the entire solar system.
Credits: NASA’s Goddard Space Flight Center/Lisa Poje/Genna Duberstein

Start of mission:

2018-aug-12 07:31 UTC

Delta IV Heavy / Star-48BV
Launch siteCape Canaveral SLC-37
ContractorUnited Launch Alliance

mass 2165 kg
propellant 2010 kg
fraction 0,93
burn time 84 sec
thrust 68,6 kN
ISP 292 sec

Installation of Star 48BV and Parker Solar Probe on adapter D4H

Charakteristic energy C3 153.79 km2/s2 was needed July 31 and at the end of the basewindow, 
152.21 was enough on the 12th August. Even on the 23rd of August, it would not be more than 156 km2/s2

Paker Solar Probe propulsion system

The system consists of a propellant tank, feed system and 12 MR-111C hydrazine thrusters, each generating one pound of thrust. These thrusters have been used on a number of NASA exploration probes, including New Horizons, now en route to a Kuiper Belt object following its encounter with Pluto.

Twelve rocket engine MR-111C:
A1-A4 are spaced around the aft structure of the spacecraft. They fire in the aft direction.
B1-B4 fire laterally
C1-C4 fire forward

slightly rotated:

slightly rotated to the other side

Because I do not know which are A1, A2, ... C4, so I named them Aw, Ax, Ay, Az, Bw, Bx, By, Bz, Cw.

Two more remains (Ay and Az)
Will they be under the solar panel on the other side?

Propulsion system Solar Probe Plus

Orbit and timeline:

Parker Solar Probe velocity and distance of the probe  from the Sun (km/s  AU) on timeline

 1st gravitational deceleration at Venus after the TCM01 correction maneuver
The PSP will fly 3.10.2018 alongside Venus and will slow from 31.48 to 28.95 by 2.53 km/s.

3.10.2018 8:46 UTC 2446 km above the surface of Venus (r=6052 km, dist_cent= 8498.59km) 

Second flyby of Venus on December 26, 2019. The velocity decreases by 2.9 km/s to 26 km/s (red circle), shifting the spacecraft to a new orbit closer to the Sun.
PSP 3rd flyby around Venus in SSB coordinates x-y

PSP 3rd flyby around Venus SSB x-z

PSP 3rd flyby around Venus SSB x-y

Venus coordinate system

Specific orbital energy before and after braking around Venus a its change

Pridať popis

Parker Solar Probe 24th perihelion in the coordinates of the Solar System Barycenter

First Light:

The right side of this image — from WISPR’s inner telescope — has a 40-degree field of view, with its right edge 58.5 degrees from the Sun’s center. The left side of the image is from WISPR’s outer telescope, which has a 58-degree field of view and extends to about 160 degrees from the Sun. There is a parallax of about 13 degrees in the apparent position of the Sun as viewed from Earth and from Parker Solar Probe. Credit: NASA/Naval Research Laboratory/Parker Solar Probe



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Jacobi constant

what color does the sun have? Akú farbu má Slnko?