STP-02: DSX + попутчики - Falcon Heavy - Kennedy LC-39A - 25.06.2019, 06:30 UTC

Автор поц, 04.03.2018 09:45:52

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tnt22

ЦитироватьJonathan McDowell‏Подлинная учетная запись @planet4589 2 ч. назад

The @exploreplanets LightSail-2 was ejected from GaTech's PROX-1 satellite at 0749 UTC Jul 2. Still no catalog number matched with PROX-1 and no TLEs so far for LightSail.
Цитироватьhttps://twitter.com/exploreplanets/status/1145996931119796224

tnt22

Обнаружены ещё два объекта запуска0 TBA - TO BE ASSIGNED
1 44375U 19036Z   19183.14337642  .00013270  00000-0  20713-3 0  9993
2 44375  28.5184 156.3961 0388497 178.0003 280.1033 14.97233711    18

0 TBA - TO BE ASSIGNED
1 44376U 19036AA  19182.27303058  .00401791  00000-0  61410-2 0  9998
2 44376  28.5106 161.9353 0370818 168.6851 318.7954 15.01330433    19
44375 / 2019-036Z : 305 x 846 km x 28.518°
44376 / 2019-036AA: 305 x 820 km x 28.511°

tnt22

ЦитироватьJonathan McDowell‏Подлинная учетная запись @planet4589 12 мин. назад

Two more objects cataloged from the STP-2 launch (44375 and 44376) but neither of them is Lightsail, since they are both in the 305 x 830 km orbit

tnt22

#423
Опознан 3-й объект запуска


tnt22

#424
По состоянию на 20:50 UTC 03.07.2019 идентифицированы 5 объектов запуска


tnt22

ЦитироватьSpaceX: Incredible video of fairing re-entry / STP-2 Mission Falcon Heavy

Space Videos

Опубликовано: 3 июл. 2019 г.

This was the view from the fairing from the recent Falcon Heavy STP-2 mission. As the fairing returns to Earth, friction heats up particles in the atmosphere causing them to appear bright blue in the video
https://www.youtube.com/watch?v=IQ6Vw7LPrAIhttps://www.youtube.com/watch?v=IQ6Vw7LPrAI ( 0:55)

tnt22

#426
Идентифицирован шестой объект запуска - 44339 / 2019-036A

tnt22

#427
В каталог НОРАД внесён ещё один объект запуска


tnt22

http://www.planetary.org/blogs/jason-davis/lightsail-2-first-pics.html
ЦитироватьJason Davis • July 7, 2019
Here are the First Pictures of Earth from LightSail 2

The first pictures from The Planetary Society's LightSail 2 mission are on the ground!

Flight controllers successfully deployed the CubeSat's dual-sided solar panels Friday evening, as it flew south of mission control at Cal Poly San Luis Obispo in California. Pictures taken moments later from the spacecraft's solar panel-mounted cameras show a crescent Earth, as LightSail 2 heads into orbital sunset.


The Planetary Society
LIGHTSAIL 2 SEES EARTH
LightSail 2 captured this picture of Earth's limb on 6 July 2019 at 04:41 UTC from a camera mounted on its dual-sided solar panels. The spacecraft was headed into orbital sunset at the time, and the Sun is visible to the right. The picture is unmodified and shows a number of lens flare artifacts caused by sunlight scattering around the camera optics. The spacecraft's dual fisheye cameras have fields of view of about 180 degrees, causing the arcs in the corners and some distortion.


The Planetary Society
LIGHTSAIL 2 SEES EARTH, WITH SPECTRALINE IN VIEW
LightSail 2 captured this picture of Earth's limb on 6 July 2019 at 04:42 UTC from a camera mounted on its dual-sided solar panels. The spacecraft was headed into orbital sunset at the time, and the Sun is just out of frame on the right side. The picture is unmodified and shows a number of lens flare artifacts caused by sunlight scattering around the camera optics. The spacecraft's dual fisheye cameras have fields of view of about 180 degrees, causing the arcs in the corners and some distortion. The objects in the foreground are believed to be pieces of spectraline, a fishing line-like material used to hold the panels closed prior to deployment.

The spacecraft remains healthy since deploying from its Prox-1 carrier vehicle 5 days ago on 2 July. Team members are continuing to prepare the spacecraft for sail deployment, which is expected to occur no earlier than Monday, 8 July during a series of ground station passes between 15:00 and 22:30 PDT (22:00 July 8 to 05:30 July 9 UTC). A decision on whether to proceed with sail deployment Monday will not be made until after spacecraft operations Sunday night.

In addition to deploying LightSail 2's solar panels and downloading imagery, the team successfully activated the spacecraft's momentum wheel, completing crucial tests to ensure it was ready to swing the spacecraft into and out of the Sun's rays each orbit when solar sailing.

The team also captured imagery from LightSail 2's cameras prior to solar panel deployment that show the inside of the spacecraft, but opted not to downlink high-resolution versions. The U.S. Air Force has not yet issued position data for LightSail 2, meaning ground-based antennas must currently be aimed at Prox-1 and then adjusted based on Doppler shifts in LightSail 2's signal. This lack of precision position information increases the time required for large file transfers with the spacecraft. We expect the Air Force to issue LightSail 2 position data as soon as Monday.


The Planetary Society
LIGHTSAIL 2 INTERIOR PICTURES
These low-resolution images show the inside of LightSail 2 prior to solar panel deployment, as seen by the spacecraft's 2 solar panel-mounted cameras. The images have been enlarged 3 times their original sizes. The top 2 and bottom 2 images are the same view from the same camera, under slightly different lighting conditions.

Most of the tasks required to proceed with solar sail deployment are complete. The most significant step left is testing the spacecraft's attitude control system. When solar sailing, LightSail 2's attitude control system orients the spacecraft based on readings from magnetometers and Sun sensors, combined with ground-uploaded position data.

During orbital testing, LightSail 2's magnetometers provided readings that were inconsistent with each other. The team is reviewing ground test data to better understand the situation and develop corrective actions. They are also working to refine the operation of the spacecraft's electromagnetic torque rods, which are used to change the spacecraft orientation. The torque rods are commanded by LightSail 2's attitude control system algorithm, and mission operators have detected sluggish performance. A solution has been developed that will be tested later today.

tnt22

Обнаружен ещё один объект запуска0 TBA - TO BE ASSIGNED
1 44420U 19036AC  19189.19929602  .00000238  00000-0  66072-5 0  9998
2 44420  24.0039 123.5944 0010951 339.2037 161.8097 14.52524232    18
44420 / 2019-036AC : 710 x 725 km x 24.0°

tnt22

ЦитироватьPlanetary Society‏Подлинная учетная запись @exploreplanets 3 ч. назад

Enjoy this new image of our home in the meantime! #LightSail2 captured this on 7 July 2019 at 23:32 UTC. Lens flares are visible in the bottom left and upper right. To the left of Earth, a piece of spectraline that was used to hold the spacecraft's solar panels closed is visible.


tnt22

#431
http://planetary.org/blogs/jason-davis/ls-2-more-testing.html
ЦитироватьJason Davis • July 9, 2019
LightSail 2 Team to Conduct More Testing before Sail Deployment

The LightSail 2 mission team has delayed deployment of the spacecraft's solar sail until at least 21 July 2019 to conduct additional attitude control system testing and potentially update the spacecraft's flight software. LightSail 2 remains stable and healthy in orbit, and returned another picture to mission control at Cal Poly San Luis Obispo in California.


The Planetary Society / Processed by Seán Doran
EARTH FR OM LIGHTSAIL 2
This image of Earth was captured by LightSail 2 on 7 July 2019 at 23:32 UTC. Lens flares are visible in the bottom left and upper right. To the left of Earth, a piece of spectraline that was used to hold the spacecraft's solar panels closed is visible.

Communications with the spacecraft have improved thanks to new tracking information provided by the U.S. Air Force. During ground passes Monday, the mission team worked to refine the operation of the spacecraft's electromagnetic torque rods, which turn the spacecraft around each of its three axes, and investigated a difference in readings from two magnetometers.

During additional tests, flight controllers saw unexpected results from the spacecraft's attitude control system, which is essential for orienting LightSail 2 during solar sailing. The team will spend the next several days comparing in-flight sensor readings with ground test data, reviewing the spacecraft's attitude control system algorithm, and potentially updating the flight software.

"We want to take some of the time pressure off the team and make sure that they can methodically address the problems that have been uncovered," said LightSail 2 mission manager Dave Spencer. "Accurate attitude control is critical for the success of the mission, and we are going to take the time to get it right and verify proper functionality before deploying the sail."

With its solar sail stowed, LightSail 2 will remain stable in its current orbit. Once the sail is out, increased atmospheric drag will lim it to about 1 month the time the spacecraft can raise its orbit. Therefore it is critical that the attitude control system is working as expected prior to sail deployment.

"The spacecraft is healthy and we have every expectation that we'll be able to resolve this issue," said LightSail program manager and Planetary Society chief scientist Bruce Betts. "Our members and backers have waited a long time to see this project come to fruition, and we want to make sure we maximize our chances for success."

The spacecraft continues to communicate with all four of its ground stations at Cal Poly San Luis Obispo, Georgia Tech, Purdue University, and Kauai Community College. To see live data from the spacecraft, visit our LightSail 2 mission control page.

tnt22


tnt22

К #431

ЦитироватьJonathan McDowell‏Подлинная учетная запись @planet4589 9 июл.

Looks like LightSail-2 may finally have TLEs: new object 44420, 2019-036AC, in a 710 x 725 km x 24.0 deg orbit about 400 km away from PROX-1, seems likely to be LightSail-2.

tnt22


Pirat5


данные - на основе информации Гюнтера
Капсула с прахом находится на OTB-1

Похоже FalconSat-7 и DOTSI – это одно и то же.
PSat 2 и BRICSat 2 отделились от ступени вместе. Первый опознан почти сразу, второй – ещё нет, хотя они рядом и размер одинаков. Может всё ещё летают вместе?
Prometheus 2.6 - по идее, их должна быть пара: 2*1,5U
Странно, что до сих пор не определили GPIM, этот объект не маленький (~ 180 kg), и должен начать маневрировать. (Lifetime: 81days)
 
Везде пишется про 24 спутника. В это число не входит Oculus-ASR Sphere1, а если Prometheus-ов всё же пара, то StangSat, отделившийся от CP 9 (LEO), вместе с последним можно считать за один. Тогда после разделений всего будет 26 спутников.

Pirat5


анализ текущих данных по NORAD. ссылки
высота орбиты - от центра Земли.
(данные на 14июля2019)

Pirat5

#437
на 14июля 2019:
орбита 732 x 714 km 24.0º Prox-1, LightSail-2, NPSat-1, OTB (+Celestis16), FormoSat-7 (6шт).
ждём GPIM, FalconSat-7 [объект D и еще один?]
орбита 847 x 311 km 28.5º Oculus-ASR, Oculus-ASR Sphere1, PSAT-2, Prometheus 2-6.
ждём Armadillo, BRICSat 2, CP9 (LEO), StangSat, TEPCE-1 и 2, E-TBEx A и B. [объекты H,J,K,P,R,S,W,X,Y,Z]
орбита 12000 x 6000 km 42.2º DSX, 2я ступень FH
https://www.n2yo.com/browse/?y=2019&m=06

mind22

ЦитироватьPirat5 написал:
  на 14июня 2019:
...
Июль на дворе уже.

Pirat5

Цитироватьmind22 написал:
Июль на дворе уже.
да, конечно 14июля, поправил