SSTGFLS J222557+601148
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| Emission nebula | |
|---|---|
| Planetary nebula | |
| Observation data: J2000.0 epoch | |
| Right ascension | 22h 25m 57s[1] |
| Declination | 60° 11.8′[1] |
| Distance | 2000–3000[2] pc |
| Constellation | Cepheus |
| Notable features | Originally misclassified as a supernova remnant[2] |
| Designations | EQ J222557+601158 |
SSTGFLS J222557+601148 is a planetary nebula in the constellation Cepheus. Located between 2000 and 3000 parsecs distant from Earth, it was originally classified in 2006 as a supernova remnant. Thought to be the first supernova remnant initially detected in infrared wavelengths,[1] the spectrum and properties of the object did not match up well with that of a typical supernova remnant, and it was reclassified as a planetary nebula in 2010. A candidate central star has been identified, with an apparent infrared magnitude of 22.4.[2]
References
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