Note: Unlocks after visiting Kadara Port during the quest "Hunting the Archon".
Extra-Planetary Anomaly - Comet Tamokos Arrow
In the outer reaches of the Tecunis system you’ll find Comet Tamoko’s Arrow, upon which you’ll find a lucrative Platinum Deposit.
Extra-Planetary Anomaly - Radiation Trail
Complete the quest "A Trail of Hope" and visit Kadara, after which you’ll get the Email "Please See Me", which starts the quest "Contagion". After progressing the quest through the Nexus you’ll be led to the Tecunis system, where you’ll be able to find this anomaly. Examining it will earn you 50 Milky Way Research Data points.
Orbiting this dying gas giant you’ll find a Satellite, which is worth 50 Milky Way Research Data points when examined.
On this planet named after the "stones of life" you’ll find a Beryllium Deposit.