Kirjoitettua
Kirjoitettua palsta alkoi joulukuussa 2015 ja on keskittynyt arkkitehtuuriin ja ajankohtaisiin aiheisiin. Sen 300. kirjoitus julkaistiin 28.09.2025. Palstalla on kehittyvä julkaisulinja.
Written
"Kirjoitettua" column, "Written" in Finnish, started in December 2015 and it is focused in architecture and current topics. The 300th writing was published 28.09.2025. The column has developing publishing policy.
2025-08-17
2025-07-21_14:25:40 PSA modelled the orbit of ISS
PSA has modelled the ISS orbit in different time periods. Originals of these modelled images can be obtained via PPS image service.
From Finland I have seen and photographed ISS in day-, evening- and nighttime about ten times. Nowadays this would be much more difficult, because CalSky ended its service in 2020.
If you are sending into orbit a satellite or a new space station and you know its orbit specifications, you can subscribe from me a modelling for visualization of its orbit. Comparable would take a week. For examples of visualization modelling of satellite constellations, see PSA.
22 rotations = 1 day, 10 hours, 4 minutes.
43 rotations = 2 days, 18 hours, 35 minutes.
86 rotations = 5 days, 13 hours, 9 minutes.
158 rotations = 10 days, 4 hours, 38 minutes.
180 rotations = 11 days, 14 hours, 42 minutes.
465 rotations = 29 days, 23 hours, 59 minutes.
500 rotations = 32 days, 6 hours, 10 minutes.
1000 rotations = 64 days, 12 hours, 20 minutes.
1500 rotations = 96 days, 18 hours, 30 minutes.
2000 rotations = 129 days, 0 hours, 40 minutes.
2100 rotations = 135 days, 11 hours, 30 minutes.
Taneli_Poutvaara - 14:48:18 @ 2025, Avaruus, Poutvaara Photo Stock, Poutvaara Space Agency
Minulla on itsenäiset tekijänoikeudet ”Kirjoitettua” -kirjoituksiin ja niiden kuviin. Halutessasi julkaista sisältöä, viitata siihen tai lainata sitä, voit hakea lupaa kirjallisella hakemuksella. Viittauksissa yksityiskohtia ei saa irrottaa asiayhteydestä eikä vääristää.
I have independent copyrights for the writings in the “Kirjoitettua” -writings and the illustrations. If you wish to publish the contents, refer to it or quote it, you can apply for a license with a written application. In reference the details should not be separated from the context nor distorted.
