NGC 7026
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Planetary Nebula NGC 7026 |
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| Image taken by the Hubble space telescope with line filter : red Hα, blue OIII. | |
| AladinLite | |
| Constellation | swan |
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Position equinox : J2000.0 |
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| Right ascension | 21h 06m 18.5s |
| declination | + 47 ° 51 ′ 08 ″ |
| Appearance | |
| Apparent brightness (visual) | 10.9 likes |
| Apparent brightness (B-band) | 12.7 mag |
| Angular expansion | 0.75 ' |
| Central star | |
| Apparent brightness | 14.5 mag |
| Physical data | |
| Redshift | −0.000135 |
| Radial velocity | −40.6 km / s |
| distance | 6000 ly |
| history | |
| discovery | Sherburne Burnham |
| Date of discovery | June 6, 1873 |
| Catalog names | |
| NGC 7026 • PK 89 + 0.1 • | |
NGC 7026 (Cheeseburg Nebula ) is a planetary nebula in the constellation Swan . NGC 7026 are different, adjacent bipolar lobes that start from a ring-like tailie. In the center there is a low-hydrogen toilet star. Based on the extent and speed of expansion, the age of the nebula is assumed to be less than 1,000 years. An X-ray observation with the XMM-Newtonian shows a high emission in the bulges, which probably originates from about a million Kelvin hot plasma in these areas of the relatively young nebula.
The object was discovered by Sherburne Burnham on June 6, 1873 .
Web links
Commons : NGC 7026 - collection of images, videos, and audio files
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b SEDS : NGC 7026
- ↑ Robert A. Gruendl et al .: XMM-NEWTON OBSERVATIONS OF THE BIPOLAR PLANETARY NEBULAE NGC 2346 AND NGC 7026 (PDF; 272 kB), The Astrophysical Journal, 653: 339-344, 2006 December 10
- ↑ Seligman