PSR B1919+21 (LGM-1)
Also known as PSR B1919+21 · LGM-1
PSR B1919+21 (LGM-1) is a pulsar — first ever discovered in the constellation Vulpecula, about 1,000–2,600 light-years (poorly constrained) from Earth.
The first pulsar ever found; its impossibly regular pulses were briefly nicknamed "LGM-1" (Little Green Men) before being identified as a rotating neutron star.
Facts
| Type | Pulsar — first ever discovered |
|---|---|
| Constellation | Vulpecula |
| Position (J2000) | 19h 21m 44s, +21° 53′ |
| Distance | 1,000–2,600 light-years (poorly constrained) |
| Studied in | 416 scientific papers (SIMBAD) |
When and how to see it
PSR B1919+21 (LGM-1) is highest in the sky at midnight in July. From India (about 20° N) it climbs to about 88° above the horizon; from 50° N, to about 62°.
Heights are worked out for India and for 50° N. Set your location in Settings to see them for where you are.
For tonight's best time from your own town, the darkness and the Moon, open it on the map and see its "Tonight from your location" card.
More in Vulpecula
Everything in Vulpecula · All 88 constellations · All sky objects
Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · Deep Sky Monitor's own notes · Data sources & credits