Pulsar
PSR B0909-71 (J0909-7212)
Radio pulsar
A neutron star spinning once every 1.36 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 | Carina |
| Period | 1.363 s |
| Period derivative | 3.3×10⁻¹⁶ s/s |
| Characteristic age | 66 million years |
| Magnetic field | 6.8×10¹¹ G |
| Spin-down luminosity | 5.1×10³⁰ erg/s |
| Dispersion measure | 54.2 pc/cm³ |
| Distance | 752 pc (2.5 thousand ly) |
| Discovery | 1978 · mol2, misc, pks70 |
| Source | ATNF Pulsar Catalogue |
| Right ascension (J2000) | 9h 09m 35.8s |
| Declination (J2000) | −72° 12′ 09″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 18° N. South of latitude 18° S it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 428 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 44 million years.