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#100
by
cpushack
on 16 May, 2021 00:36
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Capella off first, in contrast to the prelaunch press info
It could also be that the production team got it reversed. Don’t think the payload names were called out on the mission control feed.
They confirmed they announced them backwards
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#101
by
ugordan
on 16 May, 2021 00:37
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Original ITU filing for Tyvak-0130 had 37deg 500km
Capella 6 will be launched in May 2021, on a 53deg orbit at an altitude between 550km and 600km.
It seems logical that Tyvak-0130 would deploy first into a lower orbit, but I’m not an expert on orbital mechanics.
They end up in the same orbit regardless since there are no propulsive maneuvers by the 2nd stage between deployments.
The orbit is 581.1 by 569.2 km, not quite circular.
Doesn't matter, deployment velocity is minimal so they're all on that same orbit.
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#102
by
Comga
on 16 May, 2021 00:46
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Very nice!
I had not noticed this on previous Starlink launches but the rotation rate before Starlink deployment was considerable.
Immediately after the satellites deploy the second stage halts it's rotation.
Obviously this has happened on previous deployments as the Starlink stacks drift away as they have always done, without leaving the field of view of the camera.
All that's left for a perfect launch is to hear about fairing recovery, second stage deorbit., and a good grip with the Octograbber.
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#103
by
jimothytones
on 16 May, 2021 00:52
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great visibility on S2 from eastern massachusetts tonight. went by about 30⁰ above the horizon, to the north, about 10-15 minutes after starlink deployment. flared really brightly at one point, could have either been the tumble or LOX venting.
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#104
by
Kabloona
on 16 May, 2021 00:59
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Starlinks and S2 just passed from northwest to north of Boston suburbs. Came into view from northwest at about 9 minutes after deploy.
Visible with the naked eye, and I was able to track with binocs for about 5 minutes until my arms got tired.
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#105
by
jimothytones
on 16 May, 2021 02:32
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how was the view with binoculars? could you make out any distinct vehicles?
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#106
by
FutureSpaceTourist
on 16 May, 2021 06:32
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https://twitter.com/capellaspace/status/1393762559275061255 We have officially made first contact with our #SAR satellite following today's mission with @SpaceX.
The satellite is in good health and will now undergo commissioning. We look forward to sharing our first light images. Until then enjoy a #SpaceSelfie from LC39A!
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#107
by
FutureSpaceTourist
on 16 May, 2021 06:41
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SpaceX launch photos by Ben Cooper
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#108
by
erv
on 16 May, 2021 06:41
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Very nice!
I had not noticed this on previous Starlink launches but the rotation rate before Starlink deployment was considerable.
Immediately after the satellites deploy the second stage halts it's rotation.
Obviously this has happened on previous deployments as the Starlink stacks drift away as they have always done, without leaving the field of view of the camera.
All that's left for a perfect launch is to hear about fairing recovery, second stage deorbit., and a good grip with the Octograbber.
I noticed the same on previous Starlink launch. Maybe they have increased the rate lately. Or not
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#109
by
FutureSpaceTourist
on 16 May, 2021 07:02
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#110
by
Kabloona
on 16 May, 2021 10:30
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how was the view with binoculars? could you make out any distinct vehicles?
Kind of shaky because I didn't have a tripod. I was hoping to see a fan-out of Starlinks, but I could only make out one blob of light, which I guess was S2 as you said.
Viewing conditions weren't ideal here as you know, because the sky wasn't completely dark yet.
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#111
by
OneSpeed
on 16 May, 2021 12:03
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Here is a comparison between the telemetry from Starlink L27 and L26.
Some differences are:
1. Acceleration is generally higher for L26, as you would expect for a lighter payload.
2. The L26 S1 time-line is compressed somewhat, especially for the drone-ship landing.
3. The L26 S2 profile is less lofted up to SECO, but the apogee after insertion is of course much higher.
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#112
by
TripD
on 16 May, 2021 12:45
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Very informative graphs. and a big YIKES!. Are you parsing out the data from these launches via readouts? If so, you da man!
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#113
by
Perchlorate
on 16 May, 2021 12:58
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Here is a comparison between the telemetry from Starlink L27 and L26.
Some differences are:
1. Acceleration is generally higher for L26, as you would expect for a lighter payload.
2. The L26 S1 time-line is compressed somewhat, especially for the drone-ship landing.
3. The L26 S2 profile is less lofted up to SECO, but the apogee after insertion is of course much higher.
Thanks; I always enjoy these. How much trouble would it be to add the additional y-axis labels for altitude and acceleration?
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#114
by
FutureSpaceTourist
on 16 May, 2021 20:40
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#115
by
Craftyatom
on 16 May, 2021 22:06
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Here is a comparison between the telemetry from Starlink L27 and L26.
Some differences are:
1. Acceleration is generally higher for L26, as you would expect for a lighter payload.
2. The L26 S1 time-line is compressed somewhat, especially for the drone-ship landing.
3. The L26 S2 profile is less lofted up to SECO, but the apogee after insertion is of course much higher.
Thanks; I always enjoy these. How much trouble would it be to add the additional y-axis labels for altitude and acceleration?
OneSpeed's graphs always make use of creative (but reasonable) unit selection to ensure that one set of y-axis labels correctly describe all three measurements.
In this case, by listing altitude in hectometers and acceleration in centimeters per second squared, those measurements end up being the same order of magnitude as velocity listed in meters per second, and can thus be displayed on the same graph with the same labels.
Fingers crossed we never need a log plot :P
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#116
by
LaunchedIn68
on 17 May, 2021 14:24
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Just after midnight on Monday May 17, I looked out my kitchen window that faces North on Long Island NY. There was a line in the sky. I made sure it wasn't a reflection, then I thought it was a jet contrail illuminated by the moon. But the moon had set. Then I saw individual lights in the train and thought, are these the Starlinks that launched the night before?
I ran outside and took the pics below. The iphone camera doesn't do what I saw justice. I saw the line of individual satellites with a faint stream connecting them. Was that the trail from the ion thrusters? To the uninformed, I could imagine them reporting a cigarshaped UFO with portals. It moved NW to NE.
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#117
by
Rondaz
on 17 May, 2021 15:17
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#118
by
Jansen
on 17 May, 2021 18:11
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#119
by
FutureSpaceTourist
on 17 May, 2021 19:50
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Full resolution launch images posted by SpaceX and taken by Ben Cooper
