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The following well-known stars are listed for the purpose of comparison. Antares (α Scorpii A) 680 [66] AD Fourteenth brightest star in the night sky. [67] Widely recognised as being among the largest known stars. [19] Betelgeuse (α Orionis) 640, [68] 764 +116 −62, [69] 782 ± 55 [70] AD & SEIS Tenth brightest star in the night sky. [67]
The trio measured the angular diameter of Betelgeuse at 0.047″, a figure that resulted in a diameter of 3.84 × 10 8 km (2.58 AU) based on the parallax value of 0.018″. [37] But limb darkening and measurement errors resulted in uncertainty about the accuracy of these measurements.
Even at the smaller diameter found in this new study, Betelgeuse would easily swallow all the inner planets in our Solar System out to Mars. Image credit: The Cosmic Companion / Created in ...
Optical diameter of Betelgeuse: 1.4 Tm Orbital distance of Saturn from Sun 2 Tm Estimated optical diameter of VY Canis Majoris, one of the largest-known stars: 5.9 Tm Orbital distance of Pluto from the Sun ~ 7.5 Tm Outer boundary of the Kuiper belt: 10 13: 10 Tm: Diameter of the Solar System as a whole [1] 16.09 Tm
An asteroid will briefly eclipse Betelgeuse, ... a slightly oval-shaped asteroid located between the orbits of Mars and Jupiter. Leona is estimated to be about 50 miles (80 kilometers) by 34 miles ...
This list contains a selection of objects 50 and 99 km in radius (100 km to 199 km in average diameter). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following ...
This is a list of the nearest supergiant stars to Earth, located at a distance of up to 1,100 light-years (340 parsecs) from Earth. Some of the brightest stars in the night sky, such as Rigel and Antares, are in the list.
Betelgeuse (apparent magnitude 0.5, absolute magnitude −5.8) appears slightly dimmer in the sky than Alpha Centauri A (apparent magnitude 0.0, absolute magnitude 4.4) even though it emits thousands of times more light, because Betelgeuse is much farther away.