Ptolemy's Cluster (M7)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 22 arcminutes across.
Finder chart
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From Los Angeles , Ptolemy's Cluster is visible in the morning sky, becoming accessible around 02:42, when it reaches an altitude of 16° above your south-eastern horizon. It will then reach its highest point in the sky at 04:30, 21° above your southern horizon. It will be lost to dawn twilight around 05:06, 20° above your southern horizon.
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Name
Ptolemy's Cluster (M7)
|
Object type
Open cluster
|
Position
| Right ascension: | 17h53m [3] |
| Declination: | -34°47' [3] |
| Constellation: | Scorpius |
| Magnitude: | 3.30 (V) [5] 3.45 (B) [3] |
| Distance: | 301.0 parsec 981.3 lightyrs [2] |
| B-V Color (mag): | 0.15 |
Derived quantities
| Absolute mag (V): | -4.09 |
Sources
Visibility from Los Angeles
All times shown in Los Angeles local time.
Events
| 20 Jun 2024 | – The Ptolemy cluster is well placed |
| 20 Jun 2025 | – The Ptolemy cluster is well placed |
| 20 Jun 2026 | – The Ptolemy cluster is well placed |
| 20 Jun 2027 | – The Ptolemy cluster is well placed |
| 20 Jun 2028 | – The Ptolemy cluster is well placed |
| 20 Jun 2029 | – The Ptolemy cluster is well placed |
| 20 Jun 2030 | – The Ptolemy cluster is well placed |
| 20 Jun 2031 | – The Ptolemy cluster is well placed |