PSR J0146+6145

NEUTRON STARMagnetar

ILLUSTRATION FROM PERIOD 8.69 S · FIELD 1.33×10¹⁴ G · CHARACTERISTIC AGE 69 100 YR · SPIN-DOWN 1.2×10³² ERG/S

OVERVIEW

NEUTRON STAR

PSR J0146+6145 is a in the constellation Cassiopeia.

WHAT IT IS
Magnetar
WHERE TO LOOK
Cassiopeia

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

OBSERVING

FROM WHERE YOU ARE

What it takes to see PSR J0146+6145 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 J0146+6145 is worth going out for.

APPARENT PLACE

EQUINOX J2026.8

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
15.5
PROPER MOTION SINCE J1993.1
0.15

Computed for 2026-10-23 00:00 UT. Two things separate it from the catalogued position above: PSR J0146+6145 has moved under its own proper motion, and the coordinate grid has turned under it — about fifty arcseconds a year of precession since 2000, and the small nodding of the Earth’s axis on top of that. The motion is counted from J1993.1, the epoch the position above was measured at — a different thing from the equinox its coordinates are named for, even where the two fall in the same year. The catalogued place is itself known to 1.00″, which is what this arithmetic can be trusted to however many digits it is printed with. Aberration, parallax and refraction are left out. Aberration swings every position by up to twenty arcseconds over a year; parallax stays under an arcsecond for all but the nearest stars; refraction is nothing overhead and about half a degree at the horizon, where it answers to the air, not the sky. The same figure for any date.

CATALOG DATA

10 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
1.33×10¹⁴ G
Spin period
8.68899
Spin-down rate
1.99×10⁻¹² /s
Characteristic age
69 070.5 yr
Spin-down luminosity
1.2×10³² 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.

Proper motion (RA)
−4.1 ±1
Proper motion (Dec)
1.9 ±1
Position epoch
J1993.118
Position known to
1.00

OTHER NAMES AND NUMBERS

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

Associated with
XRS:4U_0142+61

ALSO KNOWN AS

2 DESIGNATIONS
  • ATNF J0146+6145
  • ATNF PSR J0146+6145

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 J0146+6145 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/psr-j0146p6145
BIBTEX
@misc{spacecatalog_psr-j0146p6145,
  author       = {{SpaceCatalog}},
  title        = {{PSR J0146+6145}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/psr-j0146p6145},
  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) — No licence stated; the database is ATNF/CSIRO property under the CSIRO Legal Notice and Disclaimer. Citing this page does not replace citing that catalogue.

That catalogue asks for this acknowledgement: 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

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