---
title: "IC 4285"
url: "https://spacecatalog.org/object/ic-4285"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. IC 4285 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-4285"
---

# IC 4285

IC 4285 is a [galaxy](https://spacecatalog.org/galaxies) in the constellation [Canes Venatici](https://spacecatalog.org/constellation/canes-venatici), 1.103 Gly from Earth, shining at apparent magnitude 17.88 (B). Other catalogues list it as LEDA 2287732, PGC 2287732 and SDSS J133145.53+464917.7, among 5 designations in total.

## At a glance

- **WHAT IT IS:** Galaxy
- **HOW FAR:** 1.103 Gly — A luminosity distance, from its redshift — how faint it looks. The light itself left 982 million years ago.
- **HOW BIG ON THE SKY:** 19″ — Small enough that the full Moon would cover it several times over.
- **HOW BRIGHT (B):** 17.88 — Faint: it takes a large telescope.
- **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 | Galaxy |
| DISTANCE FROM EARTH | 1.103 Gly ±0.047 — by redshift (CMB frame), flat ΛCDM with H0 = 70 km/s/Mpc |
| APPARENT MAGNITUDE (B) | 17.88 |
| CONSTELLATION | Canes Venatici |
| RIGHT ASCENSION (J2000) | 13h 31m 45.5s |
| DECLINATION (J2000) | +46° 49′ 17.8″ |

## 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 (B) | 17.88 |
| Surface brightness | 24.1 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 | 21 419 km/s |
| Redshift (z) | 0.07419 |
| Redshift (z, CMB frame) | 0.0748105 |
| Major axis | 0.32′ |
| Minor axis | 0.17′ |
| Position angle | 92° |

### 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 | Q3683319 |

## Also known as

- IC: IC 4285
- LEDA: LEDA 2287732
- PGC: PGC 2287732
- SDSS: SDSS J133145.53+464917.7
- SDSS: SDSS J133145.54+464917.8

## 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. IC 4285 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-4285

```bibtex
@misc{spacecatalog_ic-4285,
  author       = {{SpaceCatalog}},
  title        = {{IC 4285}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ic-4285},
  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/ic-4285