Sweden launched its first military reconnaissance and surveillance satellite into orbit at 9:00 a.m. Swedish time, marking the country's operational entry into the space domain and delivering a national capability to detect and analyze threats on a global scale. The
You can see most satellites with fairly basic telescopes. The launch is also really easy to track, as you need to clear the launch area and so also there are satellite constellations looking for really hot objects above the atmosphere. The main purpose is to detect ICBMs, but they of cause can also track satellite launches.