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SS 433

SS 433 is an X-ray binary star in the constellation Aquila, about 17,940 light-years from Earth.

Microquasar with precessing jets

SS 433: a sky-survey photograph of its field
Sky survey view (DSS2 colour, or a backup survey)

Facts

TypeX-ray binary star (spectral type A7Ib)
ConstellationAquila
Position (J2000)19h 11m 49s, +4° 58′
Distance17,940 light-years (its light set off about 17,940 years ago)
Brightnessmagnitude 14.64 (smaller is brighter; the faintest stars the eye sees are about 6)
Studied in2,295 scientific papers (SIMBAD)

When and how to see it

SS 433 is highest in the sky at midnight in July. From India (about 20° N) it climbs to about 75° above the horizon; from 50° N, to about 45°. To see it you need a large telescope or long-exposure photos.

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 Aquila

Everything in Aquila · All 88 constellations · All sky objects

Data: SIMBAD (CDS, Strasbourg; the site's weekly copy) · Data sources & credits