Pulsar
PSR J1835-0011_P
Millisecond pulsar · binary system
A millisecond pulsar spinning 310 times per second: an old neutron star spun up again (“recycled”) by matter transferred from a companion. It shares a 7.190 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 | Serpens |
| Period | 3.230 ms (310 Hz) |
| Dispersion measure | 36.2 pc/cm³ |
| Distance | 1,172 pc (3.8 thousand ly) |
| Companion | helium white dwarf (estimated), ~0.26 M☉ |
| Orbital period | 7.190 days |
| Discovery | 2025 · fast_gpps |
| Source | ATNF Pulsar Catalogue |
| Right ascension (J2000) | 18h 35m 46.0s |
| Declination (J2000) | −0° 10′ 59″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 90° N. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 1798 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 68 million years.