---
title: "NGC 5023"
url: "https://spacecatalog.org/object/ngc-5023"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. NGC 5023 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-5023"
---

# NGC 5023

NGC 5023 is a spiral [galaxy](https://spacecatalog.org/galaxies) Sc in the constellation [Canes Venatici](https://spacecatalog.org/constellation/canes-venatici), shining at apparent magnitude 12.29 (V). Other catalogues list it as 2MASX J13121179+4402168, IRAS 13099+4418 and LEDA 45849, among 7 designations in total. It was discovered in 1787.

## At a glance

- **WHAT IT IS:** Spiral galaxy
- **HOW BIG ON THE SKY:** 6.2′ — About 0.2 of the full Moon's width.
- **HOW BRIGHT (V):** 12.29 — A small telescope reaches it.
- **WHERE TO LOOK:** [Canes Venatici](https://spacecatalog.org/constellation/canes-venatici) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Spiral galaxy Sc |
| APPARENT MAGNITUDE (V) | 12.29 |
| CONSTELLATION | Canes Venatici |
| RIGHT ASCENSION (J2000) | 13h 12m 12.6s |
| DECLINATION (J2000) | +44° 02′ 28.4″ |
| DISCOVERED | 1787 |

## 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) | 12.82 |
| Apparent magnitude (V) | 12.29 |
| Apparent magnitude (J) | 10.65 |
| Apparent magnitude (H band) | 10.03 |
| Apparent magnitude (K) | 9.74 |
| Surface brightness | 23.84 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 |
| --- | --- |
| Radial velocity | 404 km/s |
| Redshift (z) | 0.001348 |
| Redshift (z, CMB frame) | 0.00200667 |
| Major axis | 6.22′ |
| Minor axis | 0.78′ |
| Position angle | 28° |

### WHEN IT WAS FOUND

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

| Field | Value |
| --- | --- |
| Discovered by | 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 | Q1116459 |
| Wikipedia article | NGC 5023 |

## Also known as

- 2MASX: 2MASX J13121179+4402168
- IRAS: IRAS 13099+4418
- LEDA: LEDA 45849
- MCG: MCG +07-27-043
- NGC: NGC 5023
- PGC: PGC 45849
- UGC: UGC 8286

## 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 5023 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-5023

```bibtex
@misc{spacecatalog_ngc-5023,
  author       = {{SpaceCatalog}},
  title        = {{NGC 5023}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ngc-5023},
  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-5023