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| | ASTRONOMY (SATELLITES OF NEPTUNE) (Site not responding. Last check: 2007-11-02) |
 | | Neither Triton nor Nereid travels in the plane of the planet's equator; Triton's orbital plane is at an angle of about 20 degrees to Neptune's equator, while Nereid's is at an angle of about 30 degrees. |
 | | Triton is the only large moon in the solar system with a retrograde orbit; that is, it travels in the direction opposite the planet's rotation. |
 | | * Nereid, which is between 300 and 1,100 kilometers (190 and 680 miles) in diameter, travels around Neptune in a highly elliptical orbit that ranges from 1,390,000 to 9,635,000 kilometers (860,000 to 5,990,000 miles). |
| vesuvius.jsc.nasa.gov /er/seh/satneptune.html (746 words) |
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