Theta 1 Orionis C (θ 1 Orionis C) is a member of the Trapezium open cluster that lies within the Orion Nebula. The star C is the most massive of the four bright stars at the heart of the cluster. It is an O class blue main sequence star with a B-type main sequence companion.

Jan 24, 2024 · Theta 1 Orionis C is the brightest and most massive of the Trapezium stars. It has an apparent magnitude of 5.13. It is a blue main sequence star of the spectral type O6 Vp. It has a mass about 33 times that of the Sun and a radius 10.6 times solar.

Apr 2, 2009 · Zooming in the center of the Orion star-forming region with the four bright Trapezium stars (Theta 1 Ori A-D). The dominant star is Theta 1 Ori C, which was imaged with unprecedented...

Theta1 Orionis C is a spectroscopic binary star located in the constellation of Orion, The Hunter. It is not part of the Orion constellation outline but is within the borders of the constellation.

The Trapezium, Theta 1 Orionis (θ1 Ori), is the most famous multiple star system in the entire night sky. Located at the very heart of M42, the Orion Nebula, it is one of the youngest star clusters known.

May 15, 2015 · Also known as the Orion Trapezium Cluster or Theta-1 Orionis, the Trapezium Cluster can be resolved in 5-inch telescopes, which reveal six of the cluster’s stars in good observing conditions. The cluster is easy to identify because the brightest four stars form an asterism shaped like a trapezoid.

Dec 31, 2004 · THETA-1 ORI (Theta-1 Orionis). Dropping nearly straight down from Orion 's brilliant three-star Belt (from right to left Mintaka , Alnilam , and Alnitak , or Delta, Epsilon, and Zeta Orionis) is the Hunter's three-star "Sword," in the middle of which is one of the great sights of the telescopic sky, the Orion Nebula .

Theta 1 Ori C is the dominant and most luminous star in the Orion star-forming region. Located at a distance of only about 1300 light years, it is the nearest region where massive stars are born and provides a unique laboratory to study the formation process of high-mass stars in detail.

θ1 Orionis is a variable and multiple hypergiant star of spectral class B0 in the constellation of Orion. θ1 Orionis visual magnitude is 6.7. Because of its faintness, θ1 Orionis is not visible to the naked eye.

The Bayer designation θ Orionis (Theta Orionis) is shared by several astronomical objects, located near RA 05h 35m DEC −05° 24′: The various components are spread over several arc-minutes in and near the Orion Nebula.