---
title: "NGC 3077"
url: "https://spacecatalog.org/object/ngc-3077"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. NGC 3077 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-3077"
---

# NGC 3077

NGC 3077 is a spiral [galaxy](https://spacecatalog.org/galaxies) S? in the constellation [Ursa Major](https://spacecatalog.org/constellation/ursa-major), shining at apparent magnitude 9.88 (V). Other catalogues list it as 2MASX J10031907+6844022, IRAS 09592+6858 and IRAS F09593+6858, among 9 designations in total. It was discovered in 1801.

## At a glance

- **WHAT IT IS:** Spiral galaxy
- **HOW BIG ON THE SKY:** 5.2′ — Small enough that the full Moon would cover it several times over.
- **HOW BRIGHT (V):** 9.88 — A small telescope reaches it.
- **WHERE TO LOOK:** [Ursa Major](https://spacecatalog.org/constellation/ursa-major) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Spiral galaxy S? |
| APPARENT MAGNITUDE (V) | 9.88 |
| CONSTELLATION | Ursa Major |
| RIGHT ASCENSION (J2000) | 10h 03m 19.1s |
| DECLINATION (J2000) | +68° 44′ 02.1″ |
| DISCOVERED | 1801 |

## 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 | S? |

### 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) | 10.63 |
| Apparent magnitude (V) | 9.88 |
| Apparent magnitude (J) | 8.12 |
| Apparent magnitude (H band) | 7.55 |
| Apparent magnitude (K) | 7.30 |
| Surface brightness | 22.8 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 |
| --- | --- |
| Radial velocity | 12 km/s |
| Redshift (z) | 4×10⁻⁵ |
| Redshift (z, CMB frame) | 0.000325499 |
| Major axis | 5.21′ |
| Minor axis | 4.32′ |
| Position angle | 49° |

### 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 | Q744997 |
| Wikipedia article | NGC 3077 |

## Also known as

- 2MASX: 2MASX J10031907+6844022
- IRAS: IRAS 09592+6858
- IRAS: IRAS F09593+6858
- LEDA: LEDA 29146
- MCG: MCG +12-10-017
- NGC: NGC 3077
- PGC: PGC 29146
- SDSS: SDSS J100318.96+684403.9
- UGC: UGC 5398

## 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 3077 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ngc-3077

```bibtex
@misc{spacecatalog_ngc-3077,
  author       = {{SpaceCatalog}},
  title        = {{NGC 3077}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ngc-3077},
  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-3077