PSR J1630+3550

NEUTRON STARMillisecond pulsar

ILLUSTRATION FROM PERIOD 3.23 MS · FIELD 2.73×10⁸ G · CHARACTERISTIC AGE 2.27×10⁹ YR · SPIN-DOWN 2.64×10³⁴ ERG/S

[

OVERVIEW

] NEUTRON STAR

PSR J1630+3550 is a in the constellation Hercules, 5111 from Earth.

WHAT IT IS
Millisecond pulsar
HOW FAR
5111

The light arriving now left it that long ago.

WHERE TO LOOK
Hercules

The patch of sky it sits in, as seen from Earth.

[

OBSERVING

] FROM WHERE YOU ARE

What it takes to see PSR J1630+3550 for yourself. Everything in this part of the page is worked out for a real horizon, a real night and the equipment you say you have.

TONIGHT

Say where you are, and this line says when PSR J1630+3550 is worth going out for.

[

APPARENT PLACE

] EQUINOX J2026.7

Where a telescope has to be pointed today, which is not quite where the catalogue records the object: the coordinate grid itself has turned since the year 2000 the catalogue is referred to.

RIGHT ASCENSION
DECLINATION
GRID TURNED SINCE
12.4
PROPER MOTION SINCE
none published

Computed for 2026-09-05 00:00 UT. No proper motion is published for PSR J1630+3550, so nothing here moves the object; what separates this from the catalogued position above is the coordinate grid turning under it — about fifty arcseconds a year of precession since 2000, and the small nodding of the Earth’s axis on top of that. Aberration and refraction are not included, and neither is parallax; each is under an arcminute, which is also about as well as the catalogued position is known. The same figure for any date.

[

CATALOG DATA

] 7 FIELDS

The raw catalogue values, as the source published them, with the error bars where one was published — sorted by what each set of figures is about rather than by the order they happened to be stored in.

WHAT KIND OF THING IT IS

What the object is in itself, rather than how it happens to look from here.

Surface magnetic field
2.73×10⁸ G
Spin period
0.00322916
Spin-down rate
2.26×10⁻²⁰ /s
Characteristic age
2.27×10⁹ yr
Spin-down luminosity
2.64×10³⁴ 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.

Dispersion measure
17.45 pc/cm³

THE ORBIT

The shape of the path, where the object sits on it, and the instant those figures were true of. An orbit is a fit to observations and drifts away from the real one either side of its epoch.

Binary orbit model
ELL1
[

ALSO KNOWN AS

] 2 DESIGNATIONS
  • ATNF J1630+3550
  • ATNF PSR J1630+3550
[

LOOK IT UP ELSEWHERE

] 1 SERVICE

Each link carries the identifier printed beside it. Nothing on this page is a measurement of our own, so a number that disagrees with one of these is worth reporting — and a service that has never catalogued this object under this name will say so plainly.

[

CITE THIS PAGE

] DR1

This page is live and its numbers move when an upstream refreshes, so the citation names the release the rows belong to rather than the day you read them. The release itself is frozen, republished as a bundle, and is what a data-availability statement should point at.

PLAIN TEXT
SpaceCatalog. PSR J1630+3550 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j1630p3550
BIBTEX
@misc{spacecatalog_psr-j1630p3550,
  author       = {{SpaceCatalog}},
  title        = {{PSR J1630+3550}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/psr-j1630p3550},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from ATNF Pulsar Catalogue (Manchester+ 2005).}
}

The values above were taken from ATNF Pulsar Catalogue (Manchester+ 2005) — Free to use with attribution; cite Manchester+ 2005 (2005AJ....129.1993M). Citing this page does not replace citing that catalogue.

[

RELATED OBJECTS

] 8 LINKED