The Butterfly Cluster (M6)

Image of the Butterfly Cluster
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 15 arcminutes across.
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From San Diego , the Butterfly Cluster is visible in the morning sky, becoming accessible around 02:40, when it reaches an altitude of 18° above your south-eastern horizon. It will then reach its highest point in the sky at 04:48, 25° above your southern horizon. It will be lost to dawn twilight around 05:14, 24° above your southern horizon.

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Name The Butterfly Cluster (M6)
Object type Open cluster
Other names
The Butterfly Cluster
NGC 6405[3]
Cr 341[4]
Mel 178[5]
Right ascension:17h40m [3]
Declination:-32°15' [3]
Magnitude:4.20 (V) [5]
4.48 (B) [3]
Distance:487.0 parsec
1587.6 lightyrs [2]
B-V Color (mag):0.28
Derived quantities
Absolute mag (V):-4.24
Visibility from San Diego

All times shown in San Diego local time.


San Diego



Color scheme