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Messier 12

Kugelstärekoup
Messier 12
Foto opgeholl vum 2MASS
Stärebild Ophiuchus (Oph)
Positioun fir d'Equinoxe J2000.0
Rektaszensioun 16h 47m 14,5s
Deklinatioun − 1° 56' 52,1"
Ausgesinn
Konzentratiounsklass IX
Visuell Magnitude 7,68 magm
Wénkelduerchmiesser 16,0'
Physikalesch Donnéeën
Gehéiert zu   Mëllechstrooss
Distanz   27 Mio. Lj.(Lj)
Integréierte Spektraltyp   F8
Routverrécklung  (−145 ± 2)  10−6
Radialvitess  (−43,5 ± 0,6)
Absolutten Duerchmiesser  16000 Lj
Geschicht
Entdecker  Charles Messier
Entdeckungsdatum  1764
Katalog- an Entdeckerbezeechnungen
M  12
NGC  6218
C   1644-018

De Messier 12 (och NGC 6218 genannt) ass e +7,68 mag helle Kugelstärekoup mat engem Duerchmiesser vu 16,0' am Stärebild Ophiuchus.

De Kugelstärekoup huet bei enger oder en ettleche Passagen duerch d'Mëllechstrooss wéinst de Gezäitekräften ongeféier eng Millioun Stäre verluer, wat ongeféier 4/5 vu senger Mass ausmécht.

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Messier 12
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