Pulsar
PSR B0105+65 (J0108+6608)
Radio pulsar
A neutron star spinning once every 1.28 seconds; the beams from its magnetic poles sweep across Earth on every turn. Period, spin-down, distance and orbit come from the ATNF Pulsar Catalogue; the beam geometry is illustrative.
| Type | Pulsar |
|---|---|
| Constellation | Cassiopeia |
| Period | 1.284 s |
| Period derivative | 1.3×10⁻¹⁴ s/s |
| Characteristic age | 1.6 million years |
| Magnetic field | 4.1×10¹² G |
| Spin-down luminosity | 2.4×10³² erg/s |
| Dispersion measure | 30.5 pc/cm³ |
| Distance | 2,140 pc (7.0 thousand ly) |
| Discovery | 1972 · jb1, gb1, gb2, lotaas |
| Source | ATNF Pulsar Catalogue |
| Right ascension (J2000) | 1h 08m 22.5s |
| Declination (J2000) | +66° 08′ 34″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 24° S. North of latitude 24° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 6,980 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 124 million years.