Autor Wątek: Pioneer 10/11  (Przeczytany 14187 razy)

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Offline Orionid

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Odp: Pioneer 10/11
« Odpowiedź #15 dnia: Luty 26, 2019, 21:46 »
czy kontakt z sondami zostal utracony w skutek awarii czy slabego sygnalu? czy sondy teoretycznie jeszcze dzialaja i oczekuja komunikatu z Ziemi?
Powodem przerwania kontaktu nie była awaria. Kontakt został utracony , gdy Ziemia znalazła się poza  polem widzenia anteny sondy ( na skutek poruszania się sondy  po trajektorii niesprzyjającej kontaktowi z Ziemią).
W przypadku prawie bliźniaczej sondy Pioneer 10 kontakt utracony został przy prawie dwukrotnie większej odległości od Ziemi.
Rutynowych kontaktów z Pioneerem 11 zaprzestano 31 marca 1997 z powodów finansowych.

W 2003 emitowane przez Pioneera 10 sygnały były zbyt  słabe by istniejące na Ziemi anteny mogły je odebrać.
Chyba nie da się dziś całkowicie wykluczyć , że Pioneery nadal mogą nadawać jakieś sygnały.

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Routine tracking and project data processing operations were terminated on March 31, 1997 for budget reasons.
https://web.archive.org/web/20101120084730/http://astronautix.com/craft/pior1011.htm

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NASA Ames Research Center made last contact with the spacecraft on Sept. 30, 1995 when Pioneer 11 was 44.1 AU from Earth. Scientists later received a few minutes of good engineering data on Nov. 24, 1995 but lost contact again once Earth moved out of view of the spacecraft’s antenna.
https://solarsystem.nasa.gov/missions/pioneer-11/in-depth/

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Earth last made contact with Pioneer 11 on Nov. 24, 1995, but it wasn't due to a failure on the spacecraft. Shortly afterwards, Pioneer 11 maneuvered to a spot in the universe that was out of view from Earth.

It's possible Pioneer 11 might still be hailing home, although it should be noted Pioneer 10's signal became too faint to hear in 2002.
https://www.space.com/17785-pioneer-11.html

Pionner 10 start 3 marca 1972 UTC
 13 czerwca 1983  sonda przekroczyła orbitę Neptuna
Ostatni dane z 23 stycznia 2003 z odległości  80 AU od Ziemi po 30 latach, 10 miesiącach i 22 dniach od startu

Pioneer 11 start 6 kwietnia 1973 UTC
23 lutego 1990 r. sonda przekroczyła orbitę Neptuna
Ostatnie dane z 30 września 1995 po 22 latach, 5 miesiącach i 25 dniach od startu
30 września podczas nawiązywania ostatniego kontaktu przez NASA  sondę dzieliło od Ziemi 44,1 AU.

https://space.stackexchange.com/questions/3609/is-there-any-way-to-communicate-with-pioneer-11-through-voyager-1-or-2

Offline kanarkusmaximus

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Odp: Pioneer 10/11
« Odpowiedź #16 dnia: Luty 26, 2019, 21:56 »
W którymś momencie sygnał zaczyna być tak słaby, że niewiele się da z niego wyciągnąć. To chyba był jeden z problemów z Pioneerami - "problemy finansowe" po prostu oznaczały znacznie dłuższe sesje komunikacyjne w Deep Space Network, co jest kosztowne, i także - kosztem innych misji.

Offline ekoplaneta

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Odp: Pioneer 10/11
« Odpowiedź #17 dnia: Sierpień 17, 2019, 15:50 »
1 września minie 40 lat przelotu Pioneera 11 koło Saturna!

https://pl.wikipedia.org/wiki/Pioneer_11

Offline Orionid

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Odp: Pioneer 10/11
« Odpowiedź #18 dnia: Wrzesień 14, 2019, 21:36 »
01.09.1979 Pioneer 11 zbliżył się najbliżej do Saturna na odległość ok. 21000 km.
https://twitter.com/aisoffice/status/1697506758342971659
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Halfway through its 7th mission year, & nearly 5 years after flying by Jupiter, Pioneer 11 makes its closest approach to Saturn (21,000 km) OTD in 1979, pioneering the route through the Saturnian ring plane. The two Voyager probes would follow in 1980 & 1981.
https://twitter.com/airandspace/status/1697729818874323074
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#TDIH in 1979: Pioneer 11 made its closest approach to Saturn. The spacecraft was the first to study the ringed planet up close. It found a new ring of Saturn and discovered two new small moons: http://s.si.edu/2ZFIyDK

OTD in Space - Sept. 1: Pioneer 11 Becomes 1st Spacecraft to Visit Saturn


https://earthsky.org/space/pioneer-11-watching-the-saturn-watchers/
--

Visiting Saturn: 40 Years Since Pioneer 11's Mission to Giant Ringed Planet
By Ben Evans, on September 1st, 2019


Pioneer 11 became the first robotic visitor to Saturn, passing the ringed world in September 1979. Photo Credit: NASA



(...) Early in December 1974, after 21 months traveling through deep space, Pioneer 11 became the second spacecraft in history to successfully reach and study Jupiter. Its next mission would truly be an adventure into the Solar System’s uncharted depths. And with the unknown came problems. They manifested themselves in the form of spurious spacecraft commands, which went on for several months and could not be attributed to radiation. It turned out that Pioneer 11’s asteroid/meteoroid detector—a non-imaging tool designed to track particles from dust-size up to larger objects—had sustained radiation damage and was the source of the problem. It was correspondingly shut down, but during the process to identify the problem the spacecraft’s healthy plasma analyzer was also turned off. When commanded back on again, it came alive, but for a while refused to provide data. It was just another reminder that Pioneer 11 was voyaging into the unknown.

There existed two main proposals to observe Saturn at close range, which called for Pioneer 11 to daringly pass inside the ring-plane or, more conservatively, outside. NASA management opted for the more conservative option, keenly aware that Pioneer’s data would prove critically important for the upcoming Voyager missions. 

Humanity’s first-ever visit to Saturn would clearly be a momentous event, especially for those retirees who had worked on the project earlier in its conception. Six key retirees, known affectionately as the “over-the-hill gang”, returned to work for this critical period.

Late in July 1979, the spacecraft’s campaign to observe Saturn from afar began in earnest. NASA managers had selected a flight path which would provide a pathfinder for the twin Voyager probes—which, it was hoped, would conduct flybys of all four gas giants during their “Grand Tour” of the outer Solar System—and on 29 August Pioneer 11 began several weeks of close-range observations of the Saturnian system. Early that morning, it passed the strange, two-toned moon Iapetus, followed by tiny Phoebe a few hours later. Two days later, the spacecraft swept within 414,000 miles (666,000 km) of Hyperion, before embarking on its close passage of Saturn on 1 September.

That day’s events commenced with encounters with the moons Epimetheus, Atlas, Mimas—characterized by its vast Herschel crater—and Dione, before achieving a closest approach to Saturn of 12,795 miles (20,591 km) at 11:29:34 a.m. EDT. Over the next few hours, Pioneer 11 passed the moons Janus, Tethys, Enceladus, Calypson and Rhea, before making a distant flyby of Saturn’s giant, planet-sized satellite Titan at 1 p.m. EDT on 2 September. Yet even those distant observations showed that smog-enshrouded Titan was likely far too cold to support life.


Several more weeks of distant observations were conducted from afar and by the beginning of October 1979 Pioneer 11’s focus on Saturn ended, as the ringed planet diminished and size and steadily disappeared from view. So began the Pioneer Interstellar Mission to send the spacecraft out of the Solar System forever. (...)
https://www.americaspace.com/2019/09/01/visiting-saturn-40-years-since-pioneer-11s-mission-to-giant-ringed-planet/
« Ostatnia zmiana: Wrzesień 02, 2023, 14:42 wysłana przez Orionid »

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Odp: Pioneer 10/11
« Odpowiedź #18 dnia: Wrzesień 14, 2019, 21:36 »

Offline Orionid

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Odp: Pioneer 10/11
« Odpowiedź #19 dnia: Grudzień 08, 2019, 08:45 »
45 Years Ago, Pioneer 11 Explores Jupiter
Dec. 4, 2019

(...) The spacecraft began its observations of Jupiter in early November, and made distant observations of the planet’s four largest moons Ganymede, Callisto, Io, and Europa. About five hours prior to closest approach Pioneer 11 flew over Jupiter’s Great Red Spot at a distance of 338,700 miles and returned the best images until then of that atmospheric feature. The spacecraft made its closest approach of 26,618 miles to the planet on Dec. 3, 1974, and unlike its predecessor that flew along Jupiter’s equatorial plane, Pioneer 11 followed a more south-to-north trajectory. After passing behind the planet, Pioneer 11 reemerged over Jupiter’s north pole and returned the first images of that region of the planet, revealing that the equatorial atmospheric bands gave way at higher latitudes to more complex circulation patterns filled with vortices and individual storm systems. Pioneer 11 continued its observations of Jupiter until Jan. 1, 1975, as it flew on toward its next destination, Saturn, arriving there in September 1979. (...)

https://www.nasa.gov/feature/45-years-ago-pioneer-11-explores-jupiter

Offline ekoplaneta

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Odp: Pioneer 10/11
« Odpowiedź #20 dnia: Grudzień 03, 2020, 23:15 »
3 grudnia 1974 Pioneer 10 jako pierwszy obiekt wykonany przez człowieka przeleciał przez system Jowisza  :)

https://www.drewexmachina.com/2016/06/28/our-first-good-look-at-jupiters-north-pole-1974/?fbclid=IwAR2cHo_JpqxFaEzHQJJGl5i-zg4GHdv2OhcVYgWbJLPfwndvsB1EUS02Xlw

Offline Orionid

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Odp: Pioneer 10/11
« Odpowiedź #21 dnia: Luty 25, 2022, 09:16 »
32 lata temu, 23 lutego 1990 roku, Pioneer 11 przekroczył orbitę Neptuna, stając się czwartym statkiem kosmicznym, który opuścił Układ Słoneczny.
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On Feb. 23, 1990, it passed the orbit of the outermost planet and began its interstellar mission. The final signal from the spacecraft was received on Nov. 24, 1995, when it was more than 4 billion miles from Earth.
https://www.nasa.gov/feature/40-years-ago-pioneer-11-first-to-explore-saturn

EDIT 23.02.23
https://twitter.com/airandspace/status/1628864124435169282

https://twitter.com/NASAhistory/status/1761043241313415191
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Bon voyage to Pioneer 11 👋
#OTD in 1990, the Pioneer 11 spacecraft crossed Neptune's orbital path on the way out of our solar system. 4 million years from now, the probe—which carries a plaque to help identify humanity’s place in the cosmos—will pass by the star Lambda Aquilae.
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Offline Orionid

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Odp: Pioneer 10/11
« Odpowiedź #22 dnia: Marzec 03, 2022, 07:30 »
50 lat temu, 3 marca 1972 o 01:49:00 UTC rozpoczęła się misja Pioneera 10

50 Years Ago: Pioneer 10 Launches to Explore Jupiter
Mar 2, 2022


Two views of the Pioneer 10 mockup at the Smithsonian Institute’s National Air and Space Museum (NASM). Image credits: courtesy of NASM.

Pioneer 10 began its unprecedented multi-year journey from Earth on March 2, 1972. Managed by NASA’s Ames Research Center (ARC) in California’s Silicon Valley, it was the first spacecraft designed to travel beyond the orbit of Mars. Pioneer 10’s primary goal was to explore the gas giant planet Jupiter, its satellites, and its magnetic field and trapped radiation belts. The spacecraft reached its target 21 months after launch. Along the way, it completed the first crossing of the Asteroid Belt. Following its encounter with the solar system’s largest planet, Pioneer 10 continued to explore interplanetary space in the outer reaches of the solar system, and eventually became the first spacecraft sent on a trajectory to leave the solar system and enter interplanetary space. (...)
https://www.nasa.gov/feature/50-years-ago-pioneer-10-launches-to-explore-jupiter
https://astronomy.com/news/2022/03/50-years-ago-pioneer-10-launches-for-jupiter

EDIT 03.03.23
https://twitter.com/NASAhistory/status/1631315932311179264
https://twitter.com/airandspace/status/1631365007421104153
EDIT 02.03.23
https://twitter.com/ron_eisele/status/1763672330524365169
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2 March 1972. 01.49.04 UTC/GMT. Launch of Pioneer 10 by an Atlas Centaur from Launch Complex 36A, Cape Canaveral. Primary objective: Jupiter flyby. The first spacecraft to travel through the asteroid belt. Now more than 10 billion miles from Earth.
https://twitter.com/ron_eisele/status/1763672461445325284

https://twitter.com/NASAhistory/status/1763972539649343668
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The first to see a gas giant up close!
Launched #OTD in 1972, the Pioneer 10 spacecraft was the first ever to visit Jupiter. Until Feb 17, 1998, Pioneer 10 was the farthest human-made object in existence when it was overtaken by Voyager 1. 
More ▶️ https://go.nasa.gov/42VQrHj
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Offline Orionid

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Odp: Pioneer 10/11
« Odpowiedź #23 dnia: Kwiecień 03, 2023, 13:49 »
26 lat temu, 31.03.1997, misja naukowa Pioneera 10 oficjalnie dobiegła końca, 25 lat od startu.
Sonda kontynuowała podróż, a jej ostatni sygnał został odebrany na Ziemi w 2003 roku.
https://airandspace.si.edu/collection-objects/pioneer-10-11/nasm_A19770451000
https://twitter.com/airandspace/status/1641813966241378305https://solarsystem.nasa.gov/missions/pioneer-10/in-depth/
https://pl.wikipedia.org/wiki/Pioneer_10
https://rps.nasa.gov/missions/10/pioneer-10-11/

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Odp: Pioneer 10/11
« Odpowiedź #24 dnia: Kwiecień 06, 2023, 10:25 »
50 lat temu, 06.04.1973 o 02:11 z wyrzutni LC-36B na Cape Canaveral została wystrzelona RN Atlas SLV-3D Centaur, która wyniosła sondę międzyplanetarną Pioneer 11.
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1973 April 6 - . 02:11 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC36B. LV Family: Atlas. Launch Vehicle: Atlas SLV-3D Centaur.

Pioneer 11 - . Payload: Pioneer G. Mass: 259 kg (570 lb). Nation: USA. Agency: NASA Ames. Program: Pioneer. Class: Outer planets. Type: Outer planets probe. Spacecraft: Pioneer 10-11. USAF Sat Cat: 6421 . COSPAR: 1973-019A.
http://www.astronautix.com/a/april06.html
http://www.astronautix.com/p/pioneer10-11.html

HACL Film 00818 Atlas Centaur AC-30 Pioneer 11 Launch 4/6/1973


“The Little Spacecraft That Could”: Remembering Pioneer 11, 50 Years On
by Ben Evans April 5, 2023

(...) However, it was hoped that if Pioneer 10 succeeded in these daunting objectives, Pioneer 11’s trajectory could be tweaked to enable humanity’s first-ever, close-range glimpse of Saturn in September 1979. Its core goals included mapping Saturn’s immense magnetic field, measuring its interaction with the solar wind, taking temperature and pressure profiles of its atmosphere, observing its unique ring system and pegging the mass and other characteristics of the planet and its retinue of moons. Another fundamental facet Pioneer 11’s visit to Saturn was to verify the environment of the ring plane, and how safely it could be traversed by a spacecraft, ahead of the Voyager missions (...)
https://www.americaspace.com/2023/04/05/the-little-spacecraft-that-could-remembering-pioneer-11-50-years-on/
https://astronomy.com/news/2023/04/50-years-ago-pioneer-11-set-sail-for-the-outer-solar-system
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#50YearsAgo today at 9:11 PM EST, Pioneer 11 launched from @NASAKennedy.
The first spacecraft to study Saturn up close, it is one of five NASA spacecraft on a trajectory out of the solar system and carries a pictorial plaque about where it came from.
https://twitter.com/NASAhistory/status/1643622043252932608
https://solarsystem.nasa.gov/missions/pioneer-11/in-depth/
https://space.skyrocket.de/doc_sdat/pioneer-1011.htm
https://en.wikipedia.org/wiki/Pioneer_11
https://pl.wikipedia.org/wiki/Pioneer_11
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6 avril 1973
50ème anniversaire du lancement de la sonde Pioneer 11
https://souvenirsdespace.lebonforum.com/t448-6-avril-1973-pioneer-11-s-envole-pour-jupiter-et-saturne#1175
https://twitter.com/spacemen1969/status/1643864865831026688
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Offline Orionid

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Odp: Pioneer 10/11
« Odpowiedź #25 dnia: Kwiecień 06, 2023, 14:04 »
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(1/3) 50 lat temu, 6 kwietnia 1973 roku, o godzinie 02:11 UT, rakieta nośna Atlas SLV-3D z górnym stopniem Centaur D1A i stopniem wspomagającym Star-37E wystartowała z kosmodromu na Cape Canaveral w celu wyniesienia sondy kosmicznej na trajektorię międzyplanetarną.
Była to sonda Pioneer 11 o masie 259 kg.

(2/3) Sonda jest wyposażona w 12 instrumentów naukowych, a jej głównym zadaniem było zbadanie obszaru Układu Słonecznego poza orbitą Marsa.
Już w grudniu 1974 roku Pioneer 11 przeleciał wokół Jowisza na wzór swojego siostrzanego (ale nie identycznego) Pioneera 10.
W lipcu 1974 roku jako pierwszy w historii przeleciał wokół Saturna.

(3/3) Pioneer 11 następnie kontynuował lot dalej od Słońca.
Ostatni sygnał został odebrany 24 listopada 1995 r., kiedy sonda znajdowała się już daleko poza orbitą Plutona. Obecnie Pioneer 11 znajduje się 16,64 miliarda km od Ziemi.
Sygnał radiowy potrzebowałby 15 godzin i 25 minut na dotarcie do Ziemi.
https://twitter.com/Kosmo_Michal/status/1643856755514851332
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Odp: Pioneer 10/11
« Odpowiedź #26 dnia: Czerwiec 15, 2023, 10:57 »
40 lat temu, 13.06.1983 sonda Pioneer 10 jako pierwsza przekroczyła orbitę Neptuna.
40 lat temu, 13.06.1983 na Moffett Field wydano znaczek upamiętniający misję.
https://newsingermany.com/us-space-probe-pioneer-10-already-40-years-out-of-the-solar-system/
https://en.wikipedia.org/wiki/Moffett_Federal_Airfield
https://twitter.com/NASAhistory/status/1668672245076566016https://twitter.com/spacemen1969/status/1668730528881684480

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« Odpowiedź #26 dnia: Czerwiec 15, 2023, 10:57 »