Gravimetric Signatures are hidden asteroid belts, containing valuable asteroids for mining.
Ladar Signatures are Gas Cloud sites for harvesting compounds from nebulae.
Magnetometric Signatures are ancient Archaeological and Salvage sites.
Radar Signatures are typically pirate faction mainframes, where valuable data may be hacked.

1 AU = 149,598,000 km 9 AU = 1,346,382,000 km
2 AU = 299,196,000 km 10 AU = 1,495,980,000 km
3 AU = 448,794,000 km 11 AU = 1,645,578,000 km
4 AU = 598,392,000 km 12 AU = 1,795,176,000 km
5 AU = 747,990,000 km 13 AU = 1,944,774,000 km
6 AU = 897,588,000 km 14 AU = 2,094,372,000 km
7 AU = 1,047,186,000 km 15 AU = 2,243,970,000 km
8 AU = 1,196,784,000 km 16 AU = 2,393,568,000 km