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M27
"Dumbbell Nebula" Planetary Nebula
| Right Ascension | 19h 59m 36s | Best Seen | 7/1-11/15 |
| Declination | 22° 43' 02" | Magnitude | 7.4 |
| Constellation | Vulpecula | ||
Actual |
Compared to ... |
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| Distance | ~1,000 ly | -- |
| Diameter | ~1.5 ly | -- |
| Actual Brightness of central star | -- | 1/3 (Sun) |
| Magnitude of central star | 13.5 | |
| Spectral Type of central star | -- | G2 V (Sun) |
| Surface Temperature of star | 85,000° K | -- |
| Age | 3,000 - 4,000 years | |
| Density (gram/cubic cm) | -- | -- |
What To Look For Through The Telescope
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Recommended eyepiece: 26mm or 40 mm.
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This object will look like a whitish, hazy cloud when seen through the telescope..
M27 "Dumbbell Nebula" Information
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The nebula is expanding at 17 miles per second.
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The central star’s temperature of 85,000 K, makes it one of the hottest stars known.
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Discovered on July 12, 1764 by Charles Messier, the Dumbbell Nebula was the first planetary nebula ever discovered.
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References
| Item | Updated | Notes |
| Coordinates | 2002-09-23 | tweaked a bit |
| Distance | 2002-09-25 | previous: 900 ly... found new at SEDS site http://messier.seds.org/m/m027.html |
| Diameter | 2002-09-25 | previous: 2.5 ly... found info at http://www.noao.edu/image_gallery/html/im0054.html |
| Actual Brightness | 2002-09-25 | previous: 0.5 (sun) – BUT new info from SEDS |
| Magnitude Central Star | 2002-09-25 | OK with SEDS site |
| Surface Temp Cent. Star | 2002-09-25 | OK with SEDS site |
| Age | 2002-09-25 | OK with SEDS site |
| Other Information | 2002-09-25 | 1. Previously had info: “This planetary’s age of 48,000 years makes it about 2.5 times older than the average age (20,000 years) of typical bright planetary nebulae.” – BUT all found info says age only 3-4000 years 2. Previously, had info: “The central star may be a double star with a separation of 1.6 trillion miles (.28 light years or 18,000 times the Earth-sun distance).” – BUT can only find that “it probably has a faint (mag 27) yellow companion at 6.5" in position angle214 deg (Burnham).” on the SEDS site3. Info Item 3: SEDS site |