Cygnus X-1 size comparison: how tall is the Cygnus X-1?
Cygnus X-1: 125 km · 78 mi tall · 4.22 × 10³¹ kg
Diameter 125.2 km · 7,200 light-years from Earth · gravity 716,981,132,075.5 m/s² (73,161,340,008 g) · 21.2 times the Sun's mass; first black hole confirmed (1971)
Cygnus X-1 is 125 km · 78 mi tall (4.22 × 10³¹ kg). That is about 73,216× the height of an average man (171 cm). Compare it side by side with people, animals, buildings and more on the board above — drag, zoom, switch cm / ft, or export an image.
Cygnus X-1 in other units
| Unit | Size |
|---|---|
| Kilometres | 125.2 km |
| Miles | 77.8 mi |
| Metres | 125,200 m |
| Feet | 410,761 ft |
How big is that?
Cygnus X-1 measures 125 km across. Earth is 12,742 km wide, so Cygnus X-1 is about 1% of the width of Earth.
What is about the same size as Cygnus X-1?
| Compared with | Size | Difference |
|---|---|---|
| Gaia BH3 (Black holes) | 195 km · 121 mi | 69.7 km larger (55.7%) |
| Gaia BH1 (Black holes) | 56,800 m · 186,352 ft | 68.4 km smaller (54.6%) |
More in Black holes
- Gaia BH1 — 56,800 m · 186,352 ft
- A0620-00 — 39,000 m · 127,953 ft
- V404 Cygni — 53,200 m · 174,541 ft
- Gaia BH3 — 195 km · 121 mi
- GW150914 black hole — 366 km · 228 mi
- Sagittarius A* — 25,378,082 km · 15,769,209 mi
- Andromeda M31* — 826,840,000 km · 513,774,557 mi
- M87* — 38,389,000,000 km · 23,853,818,699 mi
- Holmberg 15A* — 236,240,000,000 km · 146,792,730,454 mi
- TON 618 — 240,374,200,000 km · 149,361,603,237 mi