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M92
Messier 92
Globular Star Cluster
Right Ascension | 17h 17m 07s | Best Seen | 5/15-11/15 |
Declination | 43° 08' 12" | Magnitude | 6.4 |
Constellation | Hercules | ||
Actual |
Compared to Sun |
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Distance | ~26,000 ly | -- |
Diameter | 85 ly | -- |
Number of Stars | ~100,000 | -- |
Actual Brightness | -- | -- |
Age | greater than 12 billion years | ~2.5 |
Integrated Spectral Type | F2 | G2 V |
What To Look For Through The Telescope
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Recommended eyepiece: 40mm or 80 mm.
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When people look through the telescope the cluster will appear similar to a pile of sugar or salt on a table.
M92 Information
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This cluster is approaching us with a velocity of 112 kilometers per second (70 miles per second).
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Trivia: thank to the precession of Earth’s axis, Earth’s North Celestial Pole occasionally passes closer than 1 degree of this cluster. M92 becomes Earth’s “North Cluster” in about 14,000 years (16,000 A.D.) as it was about 12,000 years ago (10,000 B.C.).
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References
Item | Updated | Notes |
Coordinates | 2002-08-19 | just “tweaked” a bit |
Distance | -- | |
Actual Brightness | 2002-08-19 | previous: 250,000 Solar Lum. – BUT can find no info to support this |
Number of Stars | -- | |
Diameter | 2002-08-19 | http://messier.seds.org/m/m092.html |
Age | 2002-08-19 | changed to match other glob. handbook pages |
Integrated Spectral Type | 2002-11-22 | SIMBAD |
Other | 2002-08-19 | http://messier.seds.org/m/m092.html |