Spiral galaxy · Coma Berenices
NGC 4559
Also known as: C36
mag 9.911′ across
About
NGC 4559 is a spiral galaxy of magnitude 9.9 in Coma Berenices, about 11′ across.
How to find it
- NGC 4559 is in the constellation Coma Berenices.
- Best evenings: around mid-May 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 52° 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 faint oval glow with a brighter middle — no spiral arms without a camera.
For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.
Facts
| Designations | NGC 4559, C36, PGC 42002, UGC 7766 |
|---|---|
| Type | Spiral galaxy (Sc) |
| Magnitude | 9.9The smaller the number, the brighter. |
| Apparent size | 11′ × 4.8′position angle 148°; the full Moon is 31′ across |
| Surface brightness | 23.5 mag/arcsec²Average over its disc, in the blue band: the lower the number, the easier it is to see. |
| Constellation | Coma Berenices |
| Right ascension (J2000) | 12h 35m 57.6s |
| Declination (J2000) | +27° 57′ 36″ |
More in Coma Berenices
.jpg?width=160)
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 →