Hen 2-428
Planetary nebula with a binary white dwarf core / From Wikipedia, the free encyclopedia
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Hen 2-428 is a planetary nebula with a binary double white dwarf system core. This core star system is the first discovered candidate for Type Ia supernova through binary white dwarf merger process. At the time of its discovery, the star system at the core was the heaviest known double white dwarf binary star system.
Quick Facts Emission nebula, Right ascension ...
Emission nebula | |
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Planetary nebula | |
Observation data: J2000.0[1] epoch | |
Right ascension | 19h 13m 05.239s[1] |
Declination | +15° 46′ 39.80″[1] |
Constellation | Aquila |
Designations | Henize 2-428, Hen 2-428,[1] He 2-428, PN G049.4+02.4,[1] M 4-12,[1] ARO 186,[1] PK 49+02 1,[1] IRAS 19108+1541[1] |
See also: Lists of nebulae |
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Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000.0 Equinox J2000.0 | |
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Constellation | Aquila |
Right ascension | 19h 13m 05.239s[1] |
Declination | +15° 46′ 39.80″[1] |
Spectral type | D |
Other designations | |
Database references | |
SIMBAD | data |
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