---
title: "UGC04305"
url: "https://spacecatalog.org/object/ugc04305"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. UGC04305 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ugc04305"
---

# UGC04305

UGC04305 is an irregular [galaxy](https://spacecatalog.org/galaxies) I in the constellation [Ursa Major](https://spacecatalog.org/constellation/ursa-major), shining at apparent magnitude 10.75 (V). Other catalogues list it as 2MASX J08190497+7043121, IRAS 08140+7052 and MCG +12-08-033, among 5 designations in total.

## At a glance

- **WHAT IT IS:** Irregular galaxy
- **HOW BIG ON THE SKY:** 7.9′ — About 0.3 of the full Moon's width.
- **HOW BRIGHT (V):** 10.75 — 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 | Irregular galaxy I |
| APPARENT MAGNITUDE (V) | 10.75 |
| CONSTELLATION | Ursa Major |
| RIGHT ASCENSION (J2000) | 08h 19m 05.0s |
| DECLINATION (J2000) | +70° 43′ 12.1″ |

## 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 | I |

### 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) | 11.16 |
| Apparent magnitude (V) | 10.75 |
| Apparent magnitude (J) | 10.09 |
| Apparent magnitude (H band) | 8.92 |
| Apparent magnitude (K) | 8.80 |
| Surface brightness | 24.08 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 | 157 km/s |
| Redshift (z) | 0.000524 |
| Redshift (z, CMB frame) | 0.000678178 |
| Major axis | 7.94′ |
| Minor axis | 5.62′ |
| Position angle | 15° |

### 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 |

## Also known as

- 2MASX: 2MASX J08190497+7043121
- IRAS: IRAS 08140+7052
- MCG: MCG +12-08-033
- OpenNGC: UGC04305
- PGC: PGC 23324

## 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. UGC04305 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ugc04305

```bibtex
@misc{spacecatalog_ugc04305,
  author       = {{SpaceCatalog}},
  title        = {{UGC04305}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ugc04305},
  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/ugc04305