---
title: "NGC 918"
url: "https://spacecatalog.org/object/ngc-918"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. NGC 918 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-918"
---

# NGC 918

NGC 918 is a spiral [galaxy](https://spacecatalog.org/galaxies) Sc in the constellation [Aries](https://spacecatalog.org/constellation/aries), shining at apparent magnitude 13.21 (V). Other catalogues list it as 2MASX J02255022+1829561, IRAS 02230+1816 and IRAS F02230+1816, among 8 designations in total. It was discovered in 1831.

## At a glance

- **WHAT IT IS:** Spiral galaxy
- **HOW BIG ON THE SKY:** 3.1′ — Small enough that the full Moon would cover it several times over.
- **HOW BRIGHT (V):** 13.21 — Faint: it takes a large telescope.
- **WHERE TO LOOK:** [Aries](https://spacecatalog.org/constellation/aries) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Spiral galaxy Sc |
| APPARENT MAGNITUDE (V) | 13.21 |
| CONSTELLATION | Aries |
| RIGHT ASCENSION (J2000) | 02h 25m 50.8s |
| DECLINATION (J2000) | +18° 29′ 46.5″ |
| DISCOVERED | 1831 |

## Catalogue data

### WHAT KIND OF THING IT IS

What the object is in itself, rather than how it happens to look from here.

| Field | Value |
| --- | --- |
| Hubble type | Sc |

### HOW BRIGHT IT IS

What the light adds up to, measured through one filter at a time. A magnitude is a brightness on a backwards scale — the smaller the number, the brighter the object.

| Field | Value |
| --- | --- |
| Apparent magnitude (B) | 13.09 |
| Apparent magnitude (V) | 13.21 |
| Apparent magnitude (J) | 10.05 |
| Apparent magnitude (H band) | 9.32 |
| Apparent magnitude (K) | 9.06 |
| Surface brightness | 23.8 mag/arcsec² |

### WHERE IT IS AND HOW IT MOVES

Position, motion across the sky and the size it covers on it. These are measurements of the object as seen from here, so every one of them depends on where here is.

| Field | Value |
| --- | --- |
| Major axis | 3.09′ |
| Minor axis | 1.73′ |
| Position angle | 157° |

### WHEN IT WAS FOUND

Who first saw it, from where, and by what method.

| Field | Value |
| --- | --- |
| Discovered by | John Frederick William Herschel |

### OTHER NAMES AND NUMBERS

The identifiers other catalogues file this object under, for anyone joining this data to theirs.

| Field | Value |
| --- | --- |
| OpenNGC type code | G |
| Wikidata item | Q1040200 |
| Wikipedia article | NGC 918 |

## Also known as

- 2MASX: 2MASX J02255022+1829561
- IRAS: IRAS 02230+1816
- IRAS: IRAS F02230+1816
- LEDA: LEDA 9236
- MCG: MCG +03-07-011
- NGC: NGC 918
- PGC: PGC 9236
- UGC: UGC 1888

## Source

[OpenNGC](https://github.com/mattiaverga/OpenNGC) — CC-BY-SA-4.0

The producer asks: OpenNGC, Mattia Verga (github.com/mattiaverga/OpenNGC). Fields derived from it stay under CC BY-SA 4.0.

How this was made: https://spacecatalog.org/methods#source-openngc

## Cite this page

SpaceCatalog. NGC 918 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-918

```bibtex
@misc{spacecatalog_ngc-918,
  author       = {{SpaceCatalog}},
  title        = {{NGC 918}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ngc-918},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from OpenNGC.}
}
```

OpenNGC — CC-BY-SA-4.0

Acknowledgement the producer asks for: OpenNGC, Mattia Verga (github.com/mattiaverga/OpenNGC). Fields derived from it stay under CC BY-SA 4.0.

The page itself, with its pictures, the sky map and the observing tools: https://spacecatalog.org/object/ngc-918