PSR B0329+54
Pulsar in the constellation Camelopardalis
From Wikipedia, the free encyclopedia
PSR B0329+54 is a pulsar approximately 5,300 light-years away in the constellation of Camelopardalis. It completes one rotation every 0.7145[4] seconds and is approximately 5 million years old.[4]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Camelopardalis[1] |
| Right ascension | 03h 32m 59.368s[2] |
| Declination | +54° 34′ 43.57″[2] |
| Characteristics | |
| Evolutionary stage | Pulsar |
| Astrometry | |
| Proper motion (μ) | RA: 16.960 mas/yr[3] Dec.: -10.382 mas/yr[3] |
| Parallax (π) | 0.611±0.013 mas[3] |
| Distance | 5,300 ± 100 ly (1,640 ± 30 pc) |
| Details | |
| Rotation | 0.714519699726 s[4] |
| Age | 5[4] Myr |
| Other designations | |
| NVSS J033259+543444, PSR B0329+54, PSR J0332+5434, TXS 0329+544, PULS CP 0329, 2MASS J03325936+5434448[5] | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
The emissions of this pulsar and the Vela Pulsar were converted into audible sound by the French composer Gérard Grisey, and used as such in the piece Le noir de l'étoile (1989–90).[6][7][8]
Planetary system
In 1979 and 1994, two exoplanets were reported to be orbiting the pulsar (being classified as pulsar planets).[9][10] Later observations did not support this conclusion.[11][4][12] More recently, a 2017 analysis indicated that a different long-period pulsar planet remains a possibility,[13] but this was subsequently challenged as well.[14] As of 2025[update], the existence of any planet around this pulsar remains in doubt.[10]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (years) |
Eccentricity | Inclination (°) |
Radius |
|---|---|---|---|---|---|---|
| b (disputed) | 1.97 ± 0.19 M🜨 | 10.26 ± 0.07 | 27.76 ± 0.03 | 0.236 ± 0.011 | — | — |