The Unusual Systems Catalog (USC) is a catalog developed by NOSE-P to keep track of objects with rare, record-breaking and/or unusual properties.
Since this catalog is specific to systems containing unusual objects, there's only a small amount of stars listed here.
What it keeps track of[]
Due to the nature of a star catalog, it catalogs the stars that contain the objects in question instead of directly cataloging the objects.
- Systems with unique properties closest to/farthest from the sun (e.g. F-class stars with multicellular terrestrial life planets or biggest Earth-like planets)
- Earth-like planets that have very high ESI (≥0.95)
- Earth-like planets with multicellular life that have below average ESI (≤0.7)
- T- or Y-class brown dwarfs containing at least a planet with multicellular life
- Earth-like planets with physical, orbital, and/or atmospheric stats similar to Earth
- Life-supporting planets with life-supporting moon
- Planets with both organic and exotic life
- Earth-like planets with only exotic multicellular life.
- Quadruple or more star systems
- Life-supporting planets close to a central black hole
- Life-supporting planets inside nebulae
- Earth-like moons with rings.
- Planets with ≥100 moons.
- Snowball Earth-like planets.
- Life-supporting Earth-like planets in open clusters or the center of globular clusters.
- Planets with rings far from the body.
- Earth-like planets with near-perpendicular tilt (80-100°)
- Stars with radius bigger than UY Scuti.