Sedna and are distant detached objects with perihelia greater than 70 AU. They are distant detached objects with perihelia greater than 70 AU. All of them have perihelia greater than . The paucity of bodies with perihelia at appears not to be an observational artifact. Those with perihelia greater than 50 AU are termed sednoids. Generally, TNOs with perihelia smaller than experience strong encounters with Neptune. Both objects are active Centaurs with perihelia within the orbit of Saturn. However, some asteroids showed activity at perihelion, then at subsequent perihelia. Detached objects have perihelia much larger than Neptune's aphelion. Other objects with perihelia near Neptune's also remain at the end of Neptune's migration. Mercury crossers proper have aphelia outside Mercury's (0.4667 AU) and perihelia inside Mercury's (0.3075 AU). Of these, only eight, including , have perihelia beyond Neptune's current influence. Most eTNOs have perihelia significantly beyond Neptune, which orbits from the Sun.