Planetary nebula
NGC 6210 (NGC6210)
In Hercules (Her) • Magnitude 9.7 • 0.5 arcminutes
Open the free AstroPlanner with NGC 6210 pre-selected, scored against your telescope, location, and the live cloud forecast.
Small planetary nebula in Hercules.
NGC 6210 at a glance
| Catalog IDs | N 6210 |
| Type | Planetary nebula |
| Constellation | Hercules (Her) |
| Right ascension | 16h 44m 29s |
| Declination | +23° 47' 59" |
| Apparent magnitude | 9.70 |
| Surface brightness | 16.8 mag/arcsec² |
| Angular size | 0.5 × 0.5 arcmin |
| Max altitude at 45°N | 69° |
| Best imaging months | May, Jun, Jul |
How to image NGC 6210
NGC 6210 sits in the constellation Hercules at right ascension 16h 44m 29s and declination +23° 47' 59". To frame and integrate it well, AstroPlanner will compute the optimal moonless window for tonight from your location, the field-of-view fit against your sensor and focal length, the suggested total integration time given your aperture and sky Bortle class, and a cloud-aware schedule that drops it from the plan if your nearest cloud forecast spike overlaps the best altitude window. As a planetary nebula, NGC 6210 typically appears small and intense, so a long focal length and OIII or Ha narrowband filters bring out structure.