The six start to spread out, easily visible when using the awesome poliastro
CZMLExtractor together with the new czml3 CesiumJS widget in a jupyter-notebook. (manually annotated, using space-track TLEs, note: some elements are 3 days old)

How does the drag term B* depend on the orbital altitude for cubesats in low orbits?
TLEs from SpaceTrackOrg
and the CelesTrak cubesat category.

(python) code at gitlab.com/kerel-fs/jupyter-no

kerel boosted

Via @bmispelon on birbsite, at twitter.com/bmispelon/status/1 #python

---
Having some fun with Python. Can you predict the result of the following:

'{٠} is {٠}'.format("Python", "fun")

(If you're getting a ValueError, trying copy/pasting from the tweet)

Here the altitude of the Vikram lander plotted for its last orbit before the landing maneuvre

Lunar map of the landing zone / potential crash site of the mission Vikram lander using public ephemerides fetched via / astroquery 🚀 🛰️ 🌖🇮🇳

Two plots of the operational satellites
On large scales (kilometers) the constellation oscillates in-phase (caused by orbital perturbations I guess), on small scales (hundreds of meters) the orbital decay caused by drag and occasional reboots are visible

Plot of the evolution of the semi-major axis & apogee/perigee heights for the satellite constellation (blue)
Highlighted in red: object 44278/2019-029AV which triggered a collision avoidance manoeuver by 's
earth observation satellite this morning

(see twitter.com/cgbassa/status/116 for more info on the predicted conjunction)

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RT @Jule_Fischer_BN@twitter.com

Der erste #PintofScience in #Bonn 16.-18.10.19! Wer möchte gern seine #Wissenschaft kommunizieren? Über ein RT freuen wir uns sehr! @MInkorrekt@twitter.com @MInkorrekUltras@twitter.com @_mswiss@twitter.com @wissimdialog@twitter.com @iwemedia@twitter.com

🐦🔗: twitter.com/Jule_Fischer_BN/st

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Erfolg vor Gericht: Wir dürfen das Glyphosat-Gutachten wieder veröffentlichen! Grund waren formelle Fehler der (sehr teuren) Anwälte der Bundesregierung.

Jetzt müssen wir das #Zensurheberrecht abschaffen. Und verklagen die Bundesregierung dafür doppelt.
fragdenstaat.de/blog/2019/06/2

Generated a pre-launch TLE 🗒️ based on the announced target orbit for BlackSky Global-3 🛰️(478 km x 499 km, 97.48°) for a launch 🚀 at the beginning of the window (2019-06-27T04:30:00Z) using github.com/cbassa/sattools

paste.debian.net/plainh/740203

Let's see if this first guess is correct. :) 💻

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Unsen Vortrag aus dem @ccc_koeln zu unserer Arbeit & Informationsfreiheit gibt es jetzt online: media.ccc.de/v/c4.openchaos.20 Dankeschön!

kerel boosted

The #DL0XK @SatNOGS Station is now at its final location, making beautiful NOAA APT observations with our 3D printed dual band turnstile.

network.satnogs.org/observatio

kerel boosted

Von langer Hand geplant, sensible persönliche Informationen an verurteilten Gewalttäter und ehemaligen AFD-Kader weitergegeben. Der Angriff auf das Fusion Festival entwickelt sich zum handfesten Polizeiskandal: zeit.de/gesellschaft/zeitgesch

kerel boosted

1984 war nicht als Anleitung gedacht.

RT @JamieJBartlett@twitter.com

I can’t believe what I’m seeing! While running a facial recognition pilot, one man (understandably imho) covered himself up. The police forced him to show his face (& then fined him for disorderly conduct). This is dangerous & terrifying.

🐦🔗: twitter.com/JamieJBartlett/sta

kerel boosted

🎉 #FirstToot 🎉

#CodiMD is a real-time, multi-platform collaborative markdown editor that can be used on desktop, tablet, or mobile!

There's a night mode to save your eyes as well as fine-grained permissions so you can decide how much access (if any) others have to your notes 😉

There are multiple editor modes as well; #Vim, #Emacs, and #Sublime are available at the click of a button!

Check out our demo below and take a look at the rest of the amazing features!
demo.codimd.org

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