This system was first mentioned by the Mercury 7 expedition of 3302 as being in an area where there seemed to be a larger than usual (for the core) number of black holes. There was nothing of note inside the system itself. However, two years later, explorers started reporting sightings of ghostly Anomalies inside Notable Stellar Phenomena here, and in many nearby systems as well.

These Anomalies appear around dead systems with black holes, within 500 ly of Wepaa BA-A g1735. This is much larger than the usual radius within which Anomalies appear, which is 10 ly, or sometimes 100 ly. What's more, there's a total of seven Types that can appear here: there are the ones classified as E04-Type Anomalies, and six K-Type Anomalies. (K-01,03, 04, 05, 06, 08.)
These mean that this area is by far the largest concentration of Anomalies in the galaxy, both in diversity and in the size of the area itself.

While the ghostly lights might appear to be foreboding, approaching them is quite safe. Many other similar Anomalies in the galaxy tend to react to ships approaching within 200 meters of them, but these ones are quite passive. A few kinds (such as K-03) do constantly emit some radiation, which scrambles on-board HUDs and deals light damage to shields, but even they are Mostly Harmless.

Notable Stellar Phenomena within 100 ly of nebulae can contain colourful Lagrange clouds. Although the Wepaa sector contains over a dozen planetary nebulae, the one that stands out is the Wepaa MH-V e2-5352 planetary nebula, as that one is within the NSP area and its central black hole houses Anomalies of its own.

Note that flying through Lagrange clouds in systems that only contain a black hole can be dangerous. The thicker clouds absorb what little light comes from the stars in the sky, and although the Anomalies roaming inside can be seen, the metallic crystals and mineral spheres can be much more difficult to notice. When flying at high speeds, Commanders might only notice them only when it's too late. See the picture below:

Take care not to collide with anything! And remember, the Anomalies don't emit anything other than light, so any sounds you might hear are the products of your own imagination.