---
title: "PSR J2139+00"
url: "https://spacecatalog.org/object/psr-j2139p00"
release: "DR1"
licence: "No licence stated; the database is ATNF/CSIRO property under the CSIRO Legal Notice and Disclaimer"
citation: "SpaceCatalog. PSR J2139+00 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j2139p00"
---

# PSR J2139+00

PSR J2139+00 is a pulsar, 13 731 ly from Earth.

## At a glance

- **WHAT IT IS:** Pulsar
- **HOW FAR:** 13 731 ly — The light arriving now left it that long ago.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Pulsar |
| DISTANCE FROM EARTH | 13 731 ly — by dispersion measure through the YMW16 electron-density model |
| RIGHT ASCENSION (J2000) | 21h 39m 42.0s |

## 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 |
| --- | --- |
| Spin period | 0.31247 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 |
| --- | --- |
| Dispersion measure | 31.18 pc/cm³ |

## Also known as

- ATNF: J2139+00
- ATNF: PSR J2139+00

## 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 J2139+00 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j2139p00

```bibtex
@misc{spacecatalog_psr-j2139p00,
  author       = {{SpaceCatalog}},
  title        = {{PSR J2139+00}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/psr-j2139p00},
  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-j2139p00