Introduction | Map | My Own Photos | Own Observations | References
On this page I collect my observations of the double star M 40 (Winnecke 4) in the constellation Ursa Major.
The double star M 40 (Winnecke 4) in the constellation Ursa Major made it to the surprise of many people into Messier's catalog.
When using the eVscope, I also found the galaxies NGC 4284, NGC 4290, and PGC 39934 (very small) on the photos.
On a Vespera Pro photo, nova.astrometry.net found the galaxies NGC 4284, NGC 4290, further away the galaxies NGC 4335, NGC 4358, and NGC 4362, as well as the galaxy cluster Abell 1531 (not visible for me...).
| M 40 (Winnecke 4) | NGC 4284 | NGC 4290 | ||||
| Size: 49" (Stoyan) Distance: 500 light years (Stoyan) Rating: * (Stoyan) |
Size: 1.9' x 0.9' (SkySafari) Distance: 225 million light years (SkySafari) Rating: --- |
Size: 2.2' x 1.5' (SkySafari) Distance: 155 million light years (SkySafari) Rating: --- |
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| NGC 4335 | NGC 4358 | NGC 4362 | Abell 1531 | |||
| Size: 1.9' x 1.5' (Wikipedia) Distance: 211 million light years (Wikipedia) Rating: --- |
Size: 1.0' x 0.8' (Wikipedia) Distance: 205 million light years (Wikipedia) Rating: --- |
Size: 2.2' x 1.5' (Wikipedia) Distance: 155 million light years (Wikipedia) Rating: --- |
Type: galaxy cluster Magnitude: 17.8 Rating: --- |
M 40 in constellation Ursa Major (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)
M 40, NGC 4290, NGC 4284, and PGC 39934 in constellation Ursa Major (Image Courtesy of SkySafari Astronomy, www.simulationcurriculum.com)
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M 40 - Mar 20, 2020 |
M 40 - Mar 20, 2020, processed |
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M 40 - Mar 20, 2020, ditto with arrows pointing to galaxies |
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Map (SkySafari) showing M 40 and the galaxies NGC 4284, NGC 4290, and PGC 39934 |
Ditto |
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M 40 - Apr 21, 2020 |
M 40 - Apr 21, 2020, processed |
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M 40 - Apr 21, 2020, ditto with dots indicating galaxies |
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M 40 - Sep 8, 2020 |
M 40 - Sep 8, 2020, processed |
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M 40 - Sep 8, 2020, ditto with arrows indicating galaxies |
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M 40 - Sep 8, 2020 |
M 40 - Sep 8, 2020, processed |
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M 40 - Sep 8, 2020, ditto with arrows indicating galaxies |
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M 40, Mar 27, 2025 - 2000, 10 min |
M 40, Mar 27, 2025 - 2000, 10 min, processed |
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M 40, Mar 27, 2025 - 2000, 10 min, processed from TIFF, slightly cropped |
Evaluation with nova.astrometry.net |
Galaxies from evaluation with nova.astrometry.net: NGC 4284, NGC 4290, NGC 4335, NGC 4358, NGC 4362, Abell 1531 (galaxy cluster)
