---
title: "PSR J1634+02"
url: "https://spacecatalog.org/object/psr-j1634p02"
release: "DR1"
licence: "No licence stated; the database is ATNF/CSIRO property under the CSIRO Legal Notice and Disclaimer"
citation: "SpaceCatalog. PSR J1634+02 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j1634p02"
---

# PSR J1634+02

PSR J1634+02 is a millisecond pulsar in the constellation [Ophiuchus](https://spacecatalog.org/constellation/ophiuchus).

## At a glance

- **WHAT IT IS:** Millisecond pulsar
- **WHERE TO LOOK:** [Ophiuchus](https://spacecatalog.org/constellation/ophiuchus) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Millisecond pulsar |
| CONSTELLATION | Ophiuchus |
| RIGHT ASCENSION (J2000) | 16h 34m 50.0s |
| DECLINATION (J2000) | +02° 34′ 03.0″ |

## 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 | 0.00212 s |

### OTHER NAMES AND NUMBERS

The identifiers other catalogues file this object under, for anyone joining this data to theirs.

| Field | Value |
| --- | --- |
| Associated with | GRS:4FGL\_J1634.7+0235\[aab+22\] |

## Also known as

- ATNF: J1634+02
- ATNF: PSR J1634+02

## 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 J1634+02 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j1634p02

```bibtex
@misc{spacecatalog_psr-j1634p02,
  author       = {{SpaceCatalog}},
  title        = {{PSR J1634+02}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/psr-j1634p02},
  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-j1634p02