Pan is the innermost of Saturn's known satellites:
orbit: 133,583 km from Saturn
diameter: 20 km
Pan was the god of woods, fields, and flocks, having a human torso and head with a goat's legs, horns, and ears.
Discovered by Mark R. Showalter in 1990 from Voyager photos. Recovered 24 years later in Cassini images.
Pan is within the Encke Division in Saturn's A ring.
Small moons near the rings produce wave patterns in the rings. Prior to the discovery of Pan, an analysis of the patterns in the edge of Saturn's A ring predicted the size and location of a small moon. Pan was discovered by reexamining the 10 year old Voyager photos at the predicted spot.
It is possible that there are more moons within Saturn's rings yet to be discovered.
土衛(wèi)十八是已知土星衛(wèi)星中最里面的一顆：
公轉(zhuǎn)軌道: 距土星 133,583 千米
衛(wèi)星直徑: 20 千米
Pan是樹林、田野和畜群之神，他有一個(gè)人的軀干和頭，有山羊的腿、犄角和耳朵。
這顆衛(wèi)星是在1990年由Mark R. Showalter從旅行者號(hào)傳回的照片中發(fā)現(xiàn)的。
土衛(wèi)十八在土星A光環(huán)帶的Encke溝中。
光環(huán)附近的小衛(wèi)星在光環(huán)中產(chǎn)生的波狀圖案。在發(fā)現(xiàn)土衛(wèi)十八之前，一次對(duì)土星A光環(huán)的邊緣的這種圖案的研究預(yù)言了一顆小衛(wèi)星的位置。依靠對(duì)10年前旅行者號(hào)的照片中在預(yù)言地點(diǎn)的再次研究發(fā)現(xiàn)了土衛(wèi)十八。
可能有更多的在土星光環(huán)中的衛(wèi)星將被發(fā)現(xiàn)。
orbit: 133,583 km from Saturn
diameter: 20 km
Pan was the god of woods, fields, and flocks, having a human torso and head with a goat's legs, horns, and ears.
Discovered by Mark R. Showalter in 1990 from Voyager photos. Recovered 24 years later in Cassini images.
Pan is within the Encke Division in Saturn's A ring.
Small moons near the rings produce wave patterns in the rings. Prior to the discovery of Pan, an analysis of the patterns in the edge of Saturn's A ring predicted the size and location of a small moon. Pan was discovered by reexamining the 10 year old Voyager photos at the predicted spot.
It is possible that there are more moons within Saturn's rings yet to be discovered.
土衛(wèi)十八是已知土星衛(wèi)星中最里面的一顆：
公轉(zhuǎn)軌道: 距土星 133,583 千米
衛(wèi)星直徑: 20 千米
Pan是樹林、田野和畜群之神，他有一個(gè)人的軀干和頭，有山羊的腿、犄角和耳朵。
這顆衛(wèi)星是在1990年由Mark R. Showalter從旅行者號(hào)傳回的照片中發(fā)現(xiàn)的。
土衛(wèi)十八在土星A光環(huán)帶的Encke溝中。
光環(huán)附近的小衛(wèi)星在光環(huán)中產(chǎn)生的波狀圖案。在發(fā)現(xiàn)土衛(wèi)十八之前，一次對(duì)土星A光環(huán)的邊緣的這種圖案的研究預(yù)言了一顆小衛(wèi)星的位置。依靠對(duì)10年前旅行者號(hào)的照片中在預(yù)言地點(diǎn)的再次研究發(fā)現(xiàn)了土衛(wèi)十八。
可能有更多的在土星光環(huán)中的衛(wèi)星將被發(fā)現(xiàn)。