Lenticular galaxy · Cancer
NGC 2557 Malus Cluster
mag 14.31.1′ across
About
NGC 2557, the Malus Cluster, is a lenticular galaxy of magnitude 14.3 in Cancer, about 1.1′ across.
How to find it
- NGC 2557 is in the constellation Cancer.
- Best evenings: around mid-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 north of 59° 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)Very hard or out of reach: it needs a dark sky and a larger telescope, or a camera.
For a dark country sky with no Moon. From a city, faint galaxies and nebulae can disappear completely.
Facts
| Designations | NGC 2557, PGC 23329, UGC 4330 |
|---|---|
| Type | Lenticular galaxy (S0) |
| Magnitude | 14.3The smaller the number, the brighter. |
| Apparent size | 1.1′ × 54″position angle 50°; the full Moon is 31′ across |
| Surface brightness | 23.1 mag/arcsec²Average over its disc, in the blue band: the lower the number, the easier it is to see. |
| Constellation | Cancer |
| Right ascension (J2000) | 08h 19m 10.8s |
| Declination (J2000) | +21° 26′ 09″ |
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 →