Red Spider Nebula
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| Red Spider Nebula | |
 A Hubble Space Telescope (HST) image of NGC 6537. Credit: HST/NASA/ESA. |
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| Observation data (Epoch J2000.0) |
|
|---|---|
| Right ascension | 18h 05m 13.1s |
| Declination | -19° 50′ 34.9″ |
| Distance | ~4000 ly |
| Apparent magnitude (V) | 13 |
| Apparent dimensions (V) | 1.5 arcmin |
| Constellation | Sagittarius |
| Physical characteristics | |
| Radius | ?? ly |
| Absolute magnitude (V) | - |
| Notable features | hot white dwarf |
| Other designations | NGC 6537 |
| See also: Planetary nebula, Lists of nebulae | |
The Red Spider Nebula (catalogue designation NGC 6537) is a planetary nebula in the constellation Sagittarius.
The central white dwarf, the remaining compact core of the original star, produces a powerful and hot (~10,000 K) wind blowing with a speed of 2000-4500 kilometres per second, which have generated waves 100 billion kilometres high.
With an estimated temperature of at least half a million degrees, it would be one of the hottest stars known.
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