Open cluster · Puppis
NGC 2439 Bold Arrow Cluster
mag 6.98.7′ across
About
NGC 2439, the Bold Arrow Cluster, is an open cluster of magnitude 6.9 in Puppis, about 8.7′ across.
How to find it
- NGC 2439 is in the constellation Puppis.
- Best evenings: around early March 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 south of 48° N.
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)A small knot of stars, partly resolved.
- Telescope (6–8 inch)Dozens of stars, many sharp and some coloured.
For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.
Facts
| Designations | NGC 2439 |
|---|---|
| Type | Open cluster |
| Magnitude | 6.9The smaller the number, the brighter. |
| Apparent size | 8.7′the full Moon is 31′ across |
| Constellation | Puppis |
| Right ascension (J2000) | 07h 40m 45.4s |
| Declination (J2000) | −31° 41′ 33″ |
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 →