---
title: "PSR J1923+2515"
url: "https://spacecatalog.org/object/psr-j1923p2515"
release: "DR1"
licence: "No licence stated; the database is ATNF/CSIRO property under the CSIRO Legal Notice and Disclaimer"
citation: "SpaceCatalog. PSR J1923+2515 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j1923p2515"
---

# PSR J1923+2515

PSR J1923+2515 is a millisecond pulsar in the constellation [Vulpecula](https://spacecatalog.org/constellation/vulpecula), 4077 ly from Earth.

## At a glance

- **WHAT IT IS:** Millisecond pulsar
- **HOW FAR:** 4077 ly — The light arriving now left it that long ago.
- **WHERE TO LOOK:** [Vulpecula](https://spacecatalog.org/constellation/vulpecula) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Millisecond pulsar |
| DISTANCE FROM EARTH | 4077 ly +2446 / −1112 — by pulsar parallax (timing or VLBI) |
| CONSTELLATION | Vulpecula |
| RIGHT ASCENSION (J2000) | 19h 23m 22.5s |
| DECLINATION (J2000) | +25° 15′ 40.5″ |

## 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 | 1.93×10⁸ G |
| Spin period | 0.00378816 s |
| Spin-down rate | 9.56×10⁻²¹ s/s |
| Characteristic age | 6.28×10⁹ yr |
| Spin-down luminosity | 6.94×10³³ erg/s |

### 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 |
| --- | --- |
| Radio flux at 1400 MHz | 0.202 mJy |

### 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 |
| --- | --- |
| Proper motion (RA) | −6.923 ±0.031 mas/yr |
| Proper motion (Dec) | −14.2759 ±0.049 mas/yr |
| Position epoch | J2014.550 |
| Position known to | 0.1 mas |
| Dispersion measure | 18.86 pc/cm³ |

## Also known as

- ATNF: J1923+2515
- ATNF: PSR J1923+2515

## 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 J1923+2515 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j1923p2515

```bibtex
@misc{spacecatalog_psr-j1923p2515,
  author       = {{SpaceCatalog}},
  title        = {{PSR J1923+2515}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/psr-j1923p2515},
  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-j1923p2515