A European Vega rocket launched 12 satellites toward orbit tonight (Oct. 8) on its first mission of the year.
The 12 satellites will all be deployed into low Earth orbit (LEO) by about one hour and 45 minutes after launch, if all goes according to plan.
The 100-foot-tall (30 meters) Vega is designed to loft relatively small payloads. It's capable of carrying 3,300 pounds (1,500 kilograms) to a circular orbit 435 miles (700 kilometers) above Earth, according to Arianespace's spec sheet.
The Vega debuted in February 2012 and has flown 22 times to date, which explains the name Arianespace gave to tonight's mission: VV23. The flight was the first for the standard Vega variant since November 2021.
Its upgraded, more powerful cousin, the Vega-C, has flown twice since then, in July 2022 and December 2022. The latter of those two Vega-C missions — its second ever — ended in failure, due to a flaw in the nozzle used on the rocket's second stage.
Two main payloads went up on VV23: THEOS-2 ("Thailand Earth Observation System-2"), a 919-pound (417 kg) Earth-imaging satellite that will be used by the government of Thailand; and FormoSat-7R/Triton, which was developed by Taiwan's space agency.
The 531-pound (241 kg) FormoSat-7R/Triton "is equipped with the Global Navigation Satellite System-Reflectometry (GNSS-R), which collects signals that bounce off the sea surface," Arianespace wrote in a press release. "It helps scientists calculate the wind field over the oceans. This data will be shared with the global meteorology community, contributing to the forecast of typhoon intensity and trajectory."
VV23 is also lofting 10 other payloads for six different customers, which you can read more about in the press release. Altogether, the 12 satellites that launched tonight weigh 2,738 pounds (1,242 kg), according to Arianespace.
Arianespace originally tried to launch the mission on Friday (Oct. 6), but that attempt was called off when a "red status" interrupted the countdown in the final minute due to a measurement on the Vega rocket that was "slightly above its maximum threshold," Arianespace officials said in a statement.