16 May 2024
Messier 98, M98 or NGC 4192, is an intermediate spiral galaxy about 44.4[3] million light-years away in slightly northerly Coma Berenices, about 6° to the east of the bright star Denebola (Beta Leonis). It was discovered by French astronomer Pierre Méchain on 1781,[a] along with nearby M99 and M100, and was catalogued by compatriot Charles Messier 29 days later in his Catalogue des Nébuleuses & des amas d'Étoiles.[5] It has a blueshift, denoting ignoring of its fast other movement (vectors of proper motion), it is approaching at about 140 km/s.[2]
M100
5 credit
Filtro | Exp. media (s) | Esposizione totale | Sottoframe |
|---|---|---|---|
| Luminance | 315 | 1h45m | 20 |
| Red | 315 | 1h45m | 20 |
| Green | 300 | 1h35m | 19 |
| Blue | 268 | 1h25m | 19 |