Sh 2-78
Planetary nebula
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Sh 2-78 is a planetary nebula in Aquila.[4]
| Nebula | |
|---|---|
| Observation data: epoch | |
| Right ascension | 19h 03m 08s |
| Declination | +14° 06′ 58″[1] |
| Distance | 2170 ly |
| Apparent magnitude (V) | 14.0 |
| Apparent diameter | 27'[2] |
| Constellation | Aquila |
| Physical characteristics | |
| Radius | 7.6[3] ly |
| Designations | PN G046.8+03.8 |
It was discovered by Stewart Sharpless while assembling his catalogue, and identified as a planetary nebula in 1990. It has a central star with a magnitude of 17.[5] The central star is a variable star, with a variability of 0.3 in magnitude.[6]