Voyager 2 has discovered two "shepherd" satellites associated with the rings of Uranus. The two moons -- designated 1986U7 and 1986U8 -- are seen here on either side of the bright epsilon ring; all nine of the known Uranian rings are visible. The image was taken Jan. 21, 1986, at a distance of 4.1 million kilometers (2.5 million miles) and resolution of about 36 km (22 mi). The image was processed to enhance narrow features. The epsilon ring appears surrounded by a dark halo as a result of this processing; occasional blips seen on the ring are also artifacts. Lying inward from the epsilon ring are the delta, gamma and eta rings; then the beta and alpha rings; and finally the barely visible 4, 5 and 6 rings. The rings have been studied since their discovery in 1977, through observations of how they diminish the light of stars they pass in front of. This image is the first direct observation of all nine rings in reflected sunlight. They range in width from about 100 km (60 mi) at the widest part of the epsilon ring to only a few kilometers for most of the others. The discovery of the two ring moons 1986U7 and 1986U8 is a major advance in our understanding of the structure of the Uranian rings and is in good agreement with theoretical predictions of how these narrow rings are kept from spreading out. Based on likely surface brightness properties, the moons are of roughly 2O- and 3O-km diameter, respectively. The Voyager project is managed for NASA by the Jet Propulsion Laboratory.
Original Caption Released with Image: Voyager 2 has discovered two "shepherd" satellites associated with the rings of Uranus. The two moons -- designated 1986U7 and 1986U8 -- are seen here on either side of the bright epsilon ring; all nine of the known
ไฟล, uranus, rings, moons, ไฟล, ประว, ไฟล, หน, าท, ภาพน, การใช, ไฟล, วนกลาง, อม, ลเก, ยวก, บภาพขนาดของต, วอย, างน, กเซล, ความละเอ, ยดอ, กเซล, กเซล, กเซล, ภาพท, ความละเอ, ยดส, งกว, 8206, กเซล, ขนาดไฟล, โลไบต, ชน, ดไมม, image, jpeg, ปภาพหร, อไฟล, เส, ยงน, นฉบ, บ. ifl prawtiifl hnathimiphaphni karichiflswnklang khxmulekiywkbphaphkhnadkhxngtwxyangni 612 600 phikesl khwamlaexiydxun 245 240 phikesl 490 480 phikesl 740 725 phikesl duphaphthimikhwamlaexiydsungkwa 8206 740 725 phikesl khnadifl 216 kiolibt chnidimm image jpeg rupphaphhruxiflesiyngni tnchbbxyuthi khxmmxns raylaexiyddanlang epnkhxkhwamthiaesdngphlcak ifltnchbbinkhxmmxns khxmmxnsepnewbistinokhrngkarsahrbekbrwbrwmsuxesri thi khunsamarthchwyid khwamyx khaxthibayUranus rings and two moons jpg Original Caption Released with Image Voyager 2 has discovered two shepherd satellites associated with the rings of Uranus The two moons designated 1986U7 and 1986U8 are seen here on either side of the bright epsilon ring all nine of the known Uranian rings are visible The image was taken Jan 21 1986 at a distance of 4 1 million kilometers 2 5 million miles and resolution of about 36 km 22 mi The image was processed to enhance narrow features The epsilon ring appears surrounded by a dark halo as a result of this processing occasional blips seen on the ring are also artifacts Lying inward from the epsilon ring are the delta gamma and eta rings then the beta and alpha rings and finally the barely visible 4 5 and 6 rings The rings have been studied since their discovery in 1977 through observations of how they diminish the light of stars they pass in front of This image is the first direct observation of all nine rings in reflected sunlight They range in width from about 100 km 60 mi at the widest part of the epsilon ring to only a few kilometers for most of the others The discovery of the two ring moons 1986U7 and 1986U8 is a major advance in our understanding of the structure of the Uranian rings and is in good agreement with theoretical predictions of how these narrow rings are kept from spreading out Based on likely surface brightness properties the moons are of roughly 2O and 3O km diameter respectively The Voyager project is managed for NASA by the Jet Propulsion Laboratory wnthi ph s 2529aehlngthima NASAphusrangsrrkh NASA karxnuyatichsiththi Public domain Public domain false falsephaphniepnsatharnsmbti enuxngcakepnphaphthisrangkhunodyxngkhkarbriharkarbinaelaxwkasaehngchati NASA sungtamnoybaydanlikhsiththikhxngnasarabuiwwa phaphaelasuxtang khxngnasaimidrbkarkhumkhrxngodylikhsiththiykewncarabuiwwamilikhsiththi duephimthi hnanoybaydanlikhsiththikhxngnasa hrux noybaykarichphaphkhxng JPLkhaetuxn karich olokkhxngnasa ekhruxnghmayaelaekhruxngpradbkhxngnasa thukcakddwykdhmayshrthxemrikainlksna 14 khxngkhxbngkhbthangrachkarshrthxemrika swnthi 1221 ewbistkhxngnasaekbrwbrwmphaphthimacakxngkhkarxwkasosewiyt xngkhkarxwkasaehngchatirsesiy aelaxngkhkarxwkasthimiichxngkhkarxwkaskhxngshrthxemrika epncanwnmak phaphehlaniimcaepntxngepnsatharnsmbtiesmxip phaphhruxsuxthimacak klxngothrthrrsnxwkashbebil xacmilikhsiththi hakphaphhruxsuxnnimidrabuchdecnwamacak sthabnwithyasastrklxngothrthrrsnxwkas 1 phaphhruxsuxthnghmdthimacakekhruxngmuxkhxng okhrngkarsuksadwngxathityaelalmsuriya milikhsiththi karnaphaphhruxsuxcakokhrngkaripichnxkehnuxcakkarichephuxkarkhahruxephuxkarsuksa txngidrbxnuyatkxn 2 phaphthithukkhdeluxkihepn phaphdarasastrpracawn APOD bnewbistkhxng APOD xacmilikhsiththi 3 khabrryayodyyxithyephimkhabrryaythrrthdediywephuxkhyaykhwamwaiflnimixairxngkvsUranus s moons Cordelia and Opheliaixethmthiaesdngxyuiniflniprakxbdwy prawtiifl khlikwnthi ewlaephuxduiflthipraktinkhnann wnthi ewlarupyxkhnadphuichkhwamehn pccubn20 40 23 tulakhm 2549740 725 216 kiolibt Brallan commonswikiOriginal Caption Released with Image Voyager 2 has discovered two shepherd satellites associated with the rings of Uranus The two moons designated 1986U7 and 1986U8 are seen here on either side of the bright epsilon ring all 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