Note: Complete the quest "Getting to Know the Nexus".
Extra-Planetary Anomaly - Element Zero
On the outskirts of the Sabeng system you’ll be able to detect this anomaly, from which, of course, you can obtain a lucrative lode of Element Zero.
Extra-Planetary Anomaly - Angaran Satellite Navpoint
After completing the quest "A Trail of Hope" you’ll be able to talk to Maariko on Aya, who will give you this quest. Scan the first Angaran Navpoint Anomaly in the Onaon system to open up the second navpoint in the Sabeng system. Investigating this one will direct you to the third navpoint and earn you 50 Remnant Research Data points.
Scan this Nexus satellite to earn 50 Milky Way Research Data points.
The most noteworthy feature on Pas-15 is the rare Ice Sheet of frozen helium. Scan it to gain XP.