---
title: "PGC 4577275"
url: "https://spacecatalog.org/object/pgc-4577275"
release: "DR1"
licence: "VizieR terms; cite Dalya+ 2022 (2022MNRAS.514.1403D)"
citation: "SpaceCatalog. PGC 4577275 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/pgc-4577275"
---

# PGC 4577275

PGC 4577275 is a [galaxy](https://spacecatalog.org/galaxies) in the constellation [Leo Minor](https://spacecatalog.org/constellation/leo-minor), 228.4 Mly from Earth, shining at apparent magnitude 18.53 (B). Other catalogues list it as SDSSJ 104027.73+244649.1 and WISExSCOS J104027.77+244649.2.

## At a glance

- **WHAT IT IS:** Galaxy
- **HOW FAR:** 228.4 Mly — A luminosity distance, from its redshift — how faint it looks. The light itself left 242 million years ago.
- **HOW BRIGHT (B):** 18.53 — Faint: it takes a large telescope.
- **WHERE TO LOOK:** [Leo Minor](https://spacecatalog.org/constellation/leo-minor) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Galaxy |
| DISTANCE FROM EARTH | 228.4 Mly ±51 — by luminosity distance from a photometric redshift (GLADE+), flat ΛCDM with H0 = 70 km/s/Mpc |
| APPARENT MAGNITUDE (B) | 18.53 |
| ABSOLUTE MAGNITUDE (B) | −15.70 |
| CONSTELLATION | Leo Minor |
| RIGHT ASCENSION (J2000) | 10h 40m 27.8s |
| DECLINATION (J2000) | +24° 46′ 48.9″ |

## 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 |
| --- | --- |
| Stellar mass | 6.54×10⁷ ±4.7×10⁷ M☉ |

### 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) | 18.53 |

### 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 |
| --- | --- |
| Redshift (z) | 0.0175783 |
| Redshift (z, CMB frame) | 0.0161509 |

## Also known as

- PGC: PGC 4577275
- SDSSJ: SDSSJ 104027.73+244649.1
- WISExSCOS: WISExSCOS J104027.77+244649.2

## Source

[GLADE+ (Galaxy List for the Advanced Detector Era)](https://cdsarc.cds.unistra.fr/viz-bin/cat/VII/291) — VizieR terms; cite Dalya+ 2022 (2022MNRAS.514.1403D)

The producer asks: Dálya et al. 2022, MNRAS 514, 1403 (2022MNRAS.514.1403D) — "Please cite this paper when using GLADE+ data" — via VizieR VII/291. This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier). The original description of the VizieR service was published in 2000, A&AS 143, 23.

How this was made: https://spacecatalog.org/methods#source-glade-plus

## Cite this page

SpaceCatalog. PGC 4577275 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/pgc-4577275

```bibtex
@misc{spacecatalog_pgc-4577275,
  author       = {{SpaceCatalog}},
  title        = {{PGC 4577275}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/pgc-4577275},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from GLADE+ (Galaxy List for the Advanced Detector Era).}
}
```

GLADE+ (Galaxy List for the Advanced Detector Era) — VizieR terms; cite Dalya+ 2022 (2022MNRAS.514.1403D)

Acknowledgement the producer asks for: Dálya et al. 2022, MNRAS 514, 1403 (2022MNRAS.514.1403D) — "Please cite this paper when using GLADE+ data" — via VizieR VII/291. This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier). The original description of the VizieR service was published in 2000, A&AS 143, 23.

The page itself, with its pictures, the sky map and the observing tools: https://spacecatalog.org/object/pgc-4577275