IC 1454
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Planetary Nebula IC 1454 |
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Cepheus |
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Position equinox : J2000.0 |
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| Right ascension | 22h 42m 25.0s |
| declination | + 80 ° 26 ′ 32 ″ |
| Appearance | |
| Apparent brightness (visual) | 14.0 mag |
| Apparent brightness (B-band) | 14.8 mag |
| Angular expansion | 0.63 ′ × 0.63 ′ |
| Central star | |
| Physical data | |
| distance | 5290 pc |
| history | |
| discovery | William Frederick Denning |
| Date of discovery | August 9, 1891 |
| Catalog names | |
| IC 1454 • PK 117 + 18.1 • Abell 81 | |
IC 1454 is a planetary nebula in the constellation Cepheus in the northern sky , which is listed in the index catalog . The entry in the index catalog cites a report by the astronomer William Frederick Denning from 1890 as the source, but neither coordinates nor zodiac signs coincide.
George Ogden Abell recognized that this object is a planetary nebula and cataloged it in 1955 and in its final form in 1966. It is recorded as the 81st entry and the distance is determined to be 2.514 kpc . The distance of the mist was determined in the following with different methods, which lead to results between 4 and 12 kpc; an L 5 -T B analysis from 2004 indicates a distance of 5.29 kpc, corresponding to around 17,000 light years .
Web links
Commons : IC 1454 - Collection of Images, Videos and Audio Files
Individual evidence
- ↑ a b NASA / IPAC EXTRAGALACTIC DATABASE
- ^ SEDS : IC 1454
- ↑ Seligman
- ↑ WF Denning: New Nebulae , bibcode : 1890MNRAS..51 ... 96D
- ↑ George Ogden Abell: Globular Clusters and Planetary Nebulae Discovered on the National Geographic Society-Palomar Observatory Sky Survey , bibcode : 1955PASP ... 67..258A
- ↑ George Ogden Abell: Properties of Some Old Planetary Nebulae , bibcode : 1966ApJ ... 144..259A
- ^ JP Philipps: Planetary nebula distances re-examined: an improved statistical scale. , bibcode : 2004MNRAS.353..589P