NGC7139 (Planetary nebula)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
From Cambridge , NGC7139 is visible all night because it is circumpolar. It will be highest in the sky shortly before dawn, when it will be lost to twilight at around 05:18, 46° above your north-eastern horizon. At dusk, it will become visible at around 20:16 (EDT), 17° above your northern horizon.
|
Name
NGC7139
|
Object type
Planetary nebula
|
Position
| Right ascension: | 21h46m [1] |
| Declination: | +63°47' [1] |
| Constellation: | Cepheus |
| Magnitude: | 13.30 (V) [1] 13.00 (B) [1] |
| Distance: | 2.4 kpc 7.8 klyr [2] |
| B-V Color (mag): | -0.30 |
Derived quantities
| Absolute mag (V): | 1.40 |
Sources