M40 (Double star)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
Finder chart
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From San Diego , M40 will become visible around 21:09 (PDT), 50° above your north-western horizon, as dusk fades to darkness. It will then sink towards the horizon, becoming tricky to observe after 00:54 when it dips 21° above your north-western horizon.
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|
Name
M40
|
Object type
Double star
|
Position
| Constellation: | Ursa Major |
| Magnitude: | 9.10 (V) [1] |
| Right ascension: | 12h22m [1] |
| Declination: | +58°05' [1] |
| Distance: | 92.0 parsec 299.9 lightyrs [1] |
Derived quantities
| Absolute mag (V): | 4.28 |
Source
Visibility from San Diego
All times shown in San Diego local time.