---
title: "NGC 4842"
url: "https://spacecatalog.org/object/ngc-4842"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. NGC 4842 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-4842"
---

# NGC 4842

NGC 4842 is a [galaxy](https://spacecatalog.org/galaxies) pair in the constellation [Coma Berenices](https://spacecatalog.org/constellation/coma-berenices). Other catalogues list it as LEDA 44337, NGC 4842a and NGC 4842A, among 5 designations in total. It was discovered in 1865.

## At a glance

- **WHAT IT IS:** Galaxy pair
- **HOW BIG ON THE SKY:** 1.0′ — Small enough that the full Moon would cover it several times over.
- **WHERE TO LOOK:** [Coma Berenices](https://spacecatalog.org/constellation/coma-berenices) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Galaxy pair |
| CONSTELLATION | Coma Berenices |
| RIGHT ASCENSION (J2000) | 12h 57m 35.9s |
| DECLINATION (J2000) | +27° 29′ 21.0″ |
| DISCOVERED | 1865 |

## Catalogue data

### 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 | 1′ |

### WHEN IT WAS FOUND

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

| Field | Value |
| --- | --- |
| Discovered by | Heinrich Louis d'Arrest |

### OTHER NAMES AND NUMBERS

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

| Field | Value |
| --- | --- |
| OpenNGC type code | GPair |
| Wikidata item | Q1114827 |

## Also known as

- LEDA: LEDA 44337
- NGC: NGC 4842
- NGC: NGC 4842a
- NGC: NGC 4842A
- PGC: PGC 44337

## 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 4842 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-4842

```bibtex
@misc{spacecatalog_ngc-4842,
  author       = {{SpaceCatalog}},
  title        = {{NGC 4842}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ngc-4842},
  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-4842