Pulsar
PSR J1928+1458_P
Millisecond pulsar · binary system
A millisecond pulsar spinning 337 times per second: an old neutron star spun up again (“recycled”) by matter transferred from a companion. It shares a 18.394 days orbit with a helium white dwarf. Period, spin-down, distance and orbit come from the ATNF Pulsar Catalogue; the beam geometry is illustrative.
| Type | Pulsar |
|---|---|
| Constellation | Aquila |
| Period | 2.970 ms (337 Hz) |
| Dispersion measure | 86.2 pc/cm³ |
| Distance | 2,691 pc (8.8 thousand ly) |
| Companion | helium white dwarf (estimated), ~0.34 M☉ |
| Orbital period | 18.394 days |
| Discovery | 2025 · fast_gpps |
| Source | ATNF Pulsar Catalogue |
| Right ascension (J2000) | 19h 28m 42.8s |
| Declination (J2000) | +14° 58′ 00″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 75° S. North of latitude 75° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 8,777 years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 156 million years.