Parker Solar Probe

[Orionid]

Parker Solar Probe: pierwsze peryhelium
BY KRZYSZTOF KANAWKA ON 6 LISTOPADA 2018

(...) Podczas pierwszego peryhelium Parker Solar Probe osiągnęła prędkość ponad 95,33 km/s. Jest to nowy rekord prędkości poruszania się statku kosmicznego. Poprzedni rekord prędkości heliocentrycznej, liczonej względem Słońca, wyniósł 68,6 km/s. Ten rekord został ustanowiony 16 kwietnia 1976 roku przez sondę Helios 2.

Dwa kolejne peryhelia Parker Solar Probe nie będą się różnić w parametrach (oraz prędkości) od tego pierwszego.
(...)
https://kosmonauta.net/2018/11/parker-solar-probe-pierwsze-peryhelium/
https://kosmonauta.net/2016/07/rekord-predkosci-sondy/

Parker Solar Probe sets records during first encounter with the sun
November 6, 2018 Stephen Clark

(...) The probe set a record Oct. 29 for the closest approach by a human-made object to the sun, besting a mark set in April 1976 by the German-American Helios 2 spacecraft at a distance of 26.55 million miles (42.7 million kilometers). On the same day, Parker Solar Probe became the fastest spacecraft relative to the sun, exceeding a heliocentric velocity of 153,454 mph (42.6 miles per second; 68.6 kilometers per second).

The spacecraft started its first solar encounter phase Oct. 31, and reached the closest point to the sun in its current orbit late Monday, reaching a top speed relative to the sun of 213,200 mph (59.2 miles per second; 95.3 kilometers per second). (...)
https://spaceflightnow.com/2018/11/06/parker-solar-probe-sets-records-during-first-encounter-with-the-sun/

[Jacob]

Ja pitole ale prędkość. Przecież to wychodzi 343 188 km/h O_o

[kanarkusmaximus]

Dziś o 10 rano CET prędkość sondy wynosiła już poniżej 90 km/s. Patrząc na aktualną orbitę PSP i pozycję Ziemi to rzeczywiście na pierwsze dane trzeba będzie trochę poczekać - Słońce zasłania wszystko!

[kanarkusmaximus]

Potwierdzenie, że sonda przetrzymała przejście przez peryhelium w świetnym stanie:
https://blogs.nasa.gov/parkersolarprobe/2018/11/20/parker-solar-probe-reports-first-telemetry-acquisition-of-science-data-since-perihelion/

Następne peryhelium 4 kwietnia 2019!

[kanarkusmaximus]

Tymczasem prędkość sondy spadła do mniej niż 39 km/s. Sonda teraz znajduje się już dalej od Słońca niż Merkury.

[Orionid]

Zdjęcie z WISPR (Wide-field Imager for Solar Probe) z  8 listopada  wykonane z odległości 16,9 miliona mil od powierzchni Słońca z widocznym Merkurym.

Preparing for Discovery With NASA's Parker Solar Probe
Dec. 12, 2018


This image from Parker Solar Probe's WISPR (Wide-field Imager for Solar Probe) instrument shows a coronal streamer, seen over the east limb of the Sun on Nov. 8, 2018, at 1:12 a.m. EST. Coronal streamers are structures of solar material within the Sun's atmosphere, the corona, that usually overlie regions of increased solar activity. The fine structure of the streamer is very clear, with at least two rays visible. Parker Solar Probe was about 16.9 million miles from the Sun's surface when this image was taken. The bright object near the center of the image is Mercury, and the dark spots are a result of background correction. Credits: NASA/Naval Research Laboratory/Parker Solar Probe

https://www.nasa.gov/feature/goddard/2018/preparing-for-discovery-with-nasas-parker-solar-probe

[Limax7]

Zdjęcie z WISPR (Wide-field Imager for Solar Probe) z  8 listopada  wykonane z odległości 16,9 miliona mil od powierzchni Słońca z widocznym Merkurym.

Na konferencji AGU mówili że to Jowisz, a tu piszą że Merkury. Hmm

[kanarkusmaximus]

A tymczasem sonda już blisko aphelium. Prędkość spadła do przyzwoitych 20,76 km/s.

[kanarkusmaximus]

To chyba dziś jest aphelium pierwszej orbity? Prędkość spadła do 17 km/s...

[Orionid]

19 stycznia sonda zakończyła pierwszą orbitę po 161 dniach od startu.
Drugie peryhelium sonda osiągnie 4 kwietnia.
Do kwietnia potrwa  zsyłanie  danych naukowych na Ziemię.

All Systems Go As Parker Solar Probe Begins Second Sun Orbit

On Jan. 19, 2019, just 161 days after its launch from Cape Canaveral Air Force Station in Florida, NASA’s Parker Solar Probe completed its first orbit of the Sun, reaching the point in its orbit farthest from our star, called aphelion. The spacecraft has now begun the second of 24 planned orbits, on track for its second perihelion, or closest approach to the Sun, on April 4, 2019.

Parker Solar Probe entered full operational status (known as Phase E) on Jan. 1, with all systems online and operating as designed. The spacecraft has been delivering data from its instruments to Earth via the Deep Space Network, and to date more than 17 gigabits of science data has been downloaded. The full dataset from the first orbit will be downloaded by April. (...)

In preparation for that next encounter, the spacecraft’s solid state recorder is being emptied of files that have already been delivered to Earth. In addition, the spacecraft is receiving updated positional and navigation information (called ephemeris) and is being loaded with a new automated command sequence, which contains about one month’s worth of instructions.

Like the mission’s first perihelion in November 2018, Parker Solar Probe’s second perihelion in April will bring the spacecraft to a distance of about 15 million miles from the Sun – just over half the previous close solar approach record of about 27 million miles set by Helios 2 in 1976. (...)

https://blogs.nasa.gov/parkersolarprobe/2019/01/28/all-systems-go-as-parker-solar-probe-begins-second-sun-orbit/?utm_source=TWITTER&utm_medium=NASA&utm_campaign=NASASocial&linkId=62918593

[kanarkusmaximus]

Zaczyna się zbliżanko do Słońca. Prędkość rośnie, ale jak na razie nie panikujmy.

[kanarkusmaximus]

Prędkość PSP przekroczyła już 22 km/s. A do drugiego peryhelium jeszcze dość dużo czasu!

[kanarkusmaximus]

Ajaj! Zaraz będzie drugie peryhelium!

[kanarkusmaximus]

w nocy o 00:40 CEST będzie drugie peryhelium sondy.

[Orionid]

Parker Solar Probe: drugie peryhelium
BY KRZYSZTOF KANAWKA ON 10 KWIETNIA 2019

(...) W nocy z 4 na 5 kwietnia 2019 sonda przeszła przez drugie peryhelium orbity. Parametry tego peryhelium było takie same jak pierwszego zbliżenia do Słońca. (...)
https://kosmonauta.net/2019/04/parker-solar-probe-drugie-peryhelium/

Parker Solar Probe Makes Second Fiery Flyby of the Sun
By Paul Scott Anderson, on April 4th, 2019

(...) NASA’s Parker Solar Probe (PSP) made its second close approach of the Sun yesterday – the closest that any spacecraft has ever flown past any star.

PSP passed through the outermost layers of the Sun’s atmosphere, the corona, at 213,000 mph, coming within 15 million miles of the Sun itself. Closest approach, called perihelion, occurred at 6:40 p.m. EDT. PSP began this phase of the mission back on March 30, 2019, and it will last until April 10.

All four suites of scientific instruments are currently operational and will collect science data from within the Sun’s corona as the probe passes through.

Due to its close proximity however, PSP has been out of radio contact with Earth since March 30, since it must keep its heat shield oriented toward the Sun during the encounter. After this mission phase is completed, it will resume contact and send the data back to Earth over several weeks, as it did during the first close approach. PSP has been designed specifically to withstand the searing temperatures and powerful gravity it experiences from being so close to the Sun. (...)
https://www.americaspace.com/2019/04/04/parker-solar-probe-makes-second-fiery-close-approach-to-the-sun-today/