Emission nebula | |
---|---|
Planetary nebula | |
![]() NGC 7139 | |
Observation data: J2000 epoch | |
Right ascension | 21h 46m 08.586s [1] |
Declination | +63° 47′ 29.45″ [1] |
Apparent magnitude (V) | 13 [2] |
Constellation | Cepheus [2] |
NGC 7139 is a planetary nebula located in the constellation of Cepheus. It was discovered on November 5, 1787, by astronomer William Herschel. [2]
Emission nebula | |
---|---|
Planetary nebula | |
![]() NGC 7139 | |
Observation data: J2000 epoch | |
Right ascension | 21h 46m 08.586s [1] |
Declination | +63° 47′ 29.45″ [1] |
Apparent magnitude (V) | 13 [2] |
Constellation | Cepheus [2] |
NGC 7139 is a planetary nebula located in the constellation of Cepheus. It was discovered on November 5, 1787, by astronomer William Herschel. [2]