Star cluster with a nebula · Auriga
NGC 1931 The Fly Nebula
Also known as: LBN 810
mag 10.14.8′ across
About
NGC 1931, the Fly Nebula, is a star cluster with a nebula of magnitude 10.1 in Auriga, about 4.8′ across.
How to find it
- NGC 1931 is in the constellation Auriga.
- Best evenings: around late January 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 46° 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 most binoculars.
- Telescope (6–8 inch)A faint glow — a UHC or OIII filter and a dark sky make the difference.
For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.
Facts
| Designations | NGC 1931, LBN 810 |
|---|---|
| Type | Star cluster with a nebula |
| Magnitude | 10.1The smaller the number, the brighter. |
| Apparent size | 4.8′the full Moon is 31′ across |
| Constellation | Auriga |
| Right ascension (J2000) | 05h 31m 25.3s |
| Declination (J2000) | +34° 14′ 48″ |
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 →