Planetary nebula · Hercules
NGC 6210 Turtle Nebula
mag 9.730″ across
About
NGC 6210, the Turtle Nebula, is a planetary nebula of magnitude 9.7 in Hercules, about 30″ across.
How to find it
- NGC 6210 is in the constellation Hercules.
- Best evenings: around mid-July it is highest at about 9 pm (10 pm in summer time); a month earlier, two hours later.
- Where on Earth: it is seen well, at least 10° up, from north of 56° S.
When it rises and sets tonight, how high it climbs and how much the Moon gets in the way are worked out in your browser for your place.
What you will see
- EyesNot visible to the naked eye.
- Binoculars (10×50)Too faint for binoculars.
- Telescope (6–8 inch)A small disc or ring of grey-green light; an OIII or UHC filter helps.
For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.
Facts
| Designations | NGC 6210, PN G043.1+37.7 |
|---|---|
| Type | Planetary nebula |
| Magnitude | 9.7The smaller the number, the brighter. |
| Apparent size | 30″the full Moon is 31′ across |
| Surface brightness | ≈ 16.8 mag/arcsec²Estimate from the magnitude and size, per square arcsecond. |
| Constellation | Hercules |
| Right ascension (J2000) | 16h 44m 29.5s |
| Declination (J2000) | +23° 47′ 59″ |
Sources and credits
Catalog data: OpenNGC by Mattia Verga, CC BY-SA 4.0, and d3-celestial by Olaf Frohn, BSD 3-Clause. All data sources →