---
title: "PSR J0056+4756"
url: "https://spacecatalog.org/object/psr-j0056p4756"
release: "DR1"
licence: "No licence stated; the database is ATNF/CSIRO property under the CSIRO Legal Notice and Disclaimer"
citation: "SpaceCatalog. PSR J0056+4756 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j0056p4756"
---

# PSR J0056+4756

PSR J0056+4756 is a pulsar in the constellation [Cassiopeia](https://spacecatalog.org/constellation/cassiopeia), 3663 ly from Earth. Other catalogues list it as B0053+47 and PSR B0053+47.

## At a glance

- **WHAT IT IS:** Pulsar
- **HOW FAR:** 3663 ly — The light arriving now left it that long ago.
- **WHERE TO LOOK:** [Cassiopeia](https://spacecatalog.org/constellation/cassiopeia) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Pulsar |
| DISTANCE FROM EARTH | 3663 ly — by dispersion measure through the YMW16 electron-density model |
| CONSTELLATION | Cassiopeia |
| RIGHT ASCENSION (J2000) | 00h 56m 25.5s |
| DECLINATION (J2000) | +47° 56′ 10.6″ |

## 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 |
| --- | --- |
| Surface magnetic field | 1.27×10¹² G |
| Spin period | 0.472037 s |
| Spin-down rate | 3.33×10⁻¹⁵ s/s |
| Characteristic age | 2 246 958 yr |
| Spin-down luminosity | 1.25×10³³ erg/s |

### 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 |
| --- | --- |
| Position known to | 0.30″ |
| Dispersion measure | 18.14 pc/cm³ |

## Also known as

- ATNF: B0053+47
- ATNF: J0056+4756
- ATNF: PSR B0053+47
- ATNF: PSR J0056+4756

## Source

[ATNF Pulsar Catalogue (Manchester+ 2005)](https://www.atnf.csiro.au/research/pulsar/psrcat) — No licence stated; the database is ATNF/CSIRO property under the CSIRO Legal Notice and Disclaimer

The producer asks: Manchester, R. N., Hobbs, G. B., Teoh, A. & Hobbs, M. 2005, AJ 129, 1993 (2005AJ....129.1993M); https://www.atnf.csiro.au/research/pulsar/psrcat

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

## Cite this page

SpaceCatalog. PSR J0056+4756 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j0056p4756

```bibtex
@misc{spacecatalog_psr-j0056p4756,
  author       = {{SpaceCatalog}},
  title        = {{PSR J0056+4756}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/psr-j0056p4756},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from ATNF Pulsar Catalogue (Manchester+ 2005).}
}
```

ATNF Pulsar Catalogue (Manchester+ 2005) — No licence stated; the database is ATNF/CSIRO property under the CSIRO Legal Notice and Disclaimer

Acknowledgement the producer asks for: Manchester, R. N., Hobbs, G. B., Teoh, A. & Hobbs, M. 2005, AJ 129, 1993 (2005AJ....129.1993M); https://www.atnf.csiro.au/research/pulsar/psrcat

The page itself, with its pictures, the sky map and the observing tools: https://spacecatalog.org/object/psr-j0056p4756