NGC 7027
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Planetary Nebula NGC 7027 |
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | swan |
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Position equinox : J2000.0 |
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| Right ascension | 21h 07m 01.5s |
| declination | + 42 ° 14 ′ 12 ″ |
| Appearance | |
| Apparent brightness (visual) | 8.5 likes |
| Apparent brightness (B-band) | 10.4 mag |
| Angular expansion | 0.3 ′ × 0.2 ′ |
| Central star | |
| designation |
HD 201272 ( SAO 50463, BD + 41 ° 4004) |
| Apparent brightness | 8.67 likes |
| Spectral class | Pe |
| Physical data | |
| Redshift | +0.000030 |
| Radial velocity | +8.9 km / s |
| distance | approx. 3,000 ly |
| diameter | approx. 0.2 ly |
| Age | about 600 years |
| history | |
| discovery | É. J.-M. Stephan |
| Date of discovery | 1878 |
| Catalog names | |
| NGC 7027 • PK 84-3.1 • PN G084.9-03.4 | |
In NGC 7027 is a remnant of a Sun-like star that a planetary nebula has formed. The nebula, which is about 3,000 light-years away and is located in the constellation Swan , has an apparent magnitude of 8.5 mag and an apparent diameter of about 0.3 × 0.2 arc minutes . The true diameter of NGC 7027 is only about 14,000 AU (0.2 light years), making it one of the smallest and youngest known planetary nebulae. Its age is estimated to be around 600 years.
NGC 7027 was discovered in 1878 by the French astronomer Édouard Jean-Marie Stephan . For a long time Thomas William Webb was also considered an explorer. However, he found the fog in 1879 a year after Stephan.
Web links
Commons : NGC 7027 - collection of images, videos, and audio files
- Hubble Space Telescope
- GoBlack
- Rolf Güsten et al .: Astrophysical detection of the helium hydride ion HeH + . Nature vol. 568, pp. 357-359 (2019)