Pulsar
PSR B1727-33 (J1730-3350)
Young pulsar
A neutron star spinning once every 0.140 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 | Scorpius |
| Period | 139.5 ms |
| Period derivative | 8.4×10⁻¹⁴ s/s |
| Characteristic age | 26 thousand years |
| Magnetic field | 3.5×10¹² G |
| Spin-down luminosity | 1.2×10³⁶ erg/s |
| Dispersion measure | 261.3 pc/cm³ |
| Distance | 3,487 pc (11.4 thousand ly) |
| Discovery | 1992 · pks1, FermiAssoc, htru_pks, pksmb |
| Source | ATNF Pulsar Catalogue |
| Right ascension (J2000) | 17h 30m 32.6s |
| Declination (J2000) | −33° 50′ 39″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 56° N. South of latitude 56° S it never sets. 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 11 thousand 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 202 million years.