The Black Widow Pulsar is an eclipsing binary millisecond pulsar discovered in 1988. It orbits with a brown dwarf companion with a period of 9.2 hours with an eclipse duration of approximately 20 minutes. When it was discovered it was the first such pulsar known.

Magnitude: 20.4

Orbital period: 0.3 hours

B−V color index: 0

Constellation: Sagitta

Apparent magnitude (V): 20.4

Rotation: 1.60734 ms