---
title: "NGC 1931"
url: "https://spacecatalog.org/object/ngc-1931"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. NGC 1931 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-1931"
---

# NGC 1931

NGC 1931 is a [nebula](https://spacecatalog.org/nebulae) with [cluster](https://spacecatalog.org/clusters) in the constellation [Auriga](https://spacecatalog.org/constellation/auriga), shining at apparent magnitude 10.10 (V). Other catalogues list it as 2MASX J05312534+3414475, Ced 49 and Cr 68, among 9 designations in total. It was discovered in 1793.

## At a glance

- **WHAT IT IS:** Nebula with cluster
- **HOW BIG ON THE SKY:** 4.8′ — Small enough that the full Moon would cover it several times over.
- **HOW BRIGHT (V):** 10.10 — A small telescope reaches it.
- **WHERE TO LOOK:** [Auriga](https://spacecatalog.org/constellation/auriga) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Nebula with cluster |
| APPARENT MAGNITUDE (V) | 10.10 |
| CONSTELLATION | Auriga |
| RIGHT ASCENSION (J2000) | 05h 31m 25.4s |
| DECLINATION (J2000) | +34° 14′ 47.6″ |
| DISCOVERED | 1793 |

## Catalogue data

### 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 (V) | 10.10 |

### 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 | 4.8′ |

### 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 | Cl+N |
| Wikidata item | Q921266 |
| Wikipedia article | NGC 1931 |

## Also known as

- 2MASX: 2MASX J05312534+3414475
- Cederblad: Ced 49
- Collinder: Cr 68
- IAU cluster: C 0528+342
- IRAS: IRAS 05281+3412
- LBN: LBN 810
- Lynds: LBN 173.92+00.24
- MWSC: MWSC 564
- NGC: NGC 1931

## 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 1931 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-1931

```bibtex
@misc{spacecatalog_ngc-1931,
  author       = {{SpaceCatalog}},
  title        = {{NGC 1931}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ngc-1931},
  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-1931