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| Stärebild | Sagittarius (Sgr)
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| Positioun fir d'Equinoxe J2000.0 | |||||
| Rektaszensioun | 18h 20.0m | ||||
| Deklinatioun | − 17° 06'[1] | ||||
| Ausgesinn | |||||
| Konzentratiounsklass | II 3 p n | ||||
| Visuell Magnitude | 7,1m | ||||
| Wénkelduerchmiesser | 10' | ||||
| Hellste Stär | HD 168352, 8,65[2]m | ||||
| Physikalesch Donnéeën | |||||
| Gehéiert zu | Sagittarius-Spiralaarm, Mëllechstrooss | ||||
| Distanz | zirka 4080(Lj) | ||||
| Radialvitess | (−14 ± 4)[1] | ||||
| Absolut Hellegkeet | −2,5 | ||||
| Absolutten Duerchmiesser | zirka 3,5 pc, ca. 11 | ||||
| Alter | ≈ 30 Mio. | ||||
| Geschicht | |||||
| Entdecker | Charles Messier | ||||
| Entdeckungsdatum | 3. Juni 1764 | ||||
| Katalog- an Entdeckerbezeechnungen | |||||
| M | 18 | ||||
| NGC | 6613 | ||||
| C | 1817-171 | ||||
| GC | 4401 | ||||
| h | 2007 | ||||
| OCl | 40 | ||||
| Cr | 376 | ||||
| Lund | 826 | ||||
De Messier 18 (och als NGC 6613 bezeechent) ass e +6,90 mag hellen oppene Stärekoup mat enger Gréisst vun 9' × 9' am Stärebild Sagittarius.
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