IC 4663
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Planetary Nebula IC 4663 |
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| Image taken by the Hubble space telescope with line filter : red Hα, blue OIII. | |
| AladinLite | |
| Constellation | Scorpio |
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Position equinox : J2000.0 |
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| Right ascension | 17h 45m 28.2s |
| declination | -44 ° 54 ′ 18 ″ |
| Appearance | |
| Apparent brightness (visual) | 12.5 mag |
| Apparent brightness (B-band) | 13.1 mag |
| Angular expansion | 0.33 |
| Central star | |
| Physical data | |
| history | |
| discovery | Williamina Fleming |
| Date of discovery | 1901 |
| Catalog names | |
| IC 4663 • PK 346-8.1 • PN G346.2-08.2 • ESO 279-PN6 • | |
IC 4663 is a planetary nebula in the constellation Scorpio . Spectral lines of ionized hydrogen and nitrogen show that in the center of the nebula lies a Wolf-Rayet star , which shines at a temperature of 140,000 Kelvin and 4,000 times the luminosity of the sun ; the distance is determined to be 3.5 kpc.