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R Leporis (R Lep), sometimes called Hind's Crimson Star, [10] is a well-known variable star in the constellation Lepus, near its border with Eridanus. It is a carbon star which appears distinctly red.
Below are lists of the largest stars currently known, ordered by radius and separated into categories by galaxy. The unit of measurement used is the radius of the Sun (approximately 695,700 km; 432,300 mi).
This page was last edited on 18 May 2007, at 01:23 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
The argument of periapsis (also called argument of perifocus or argument of pericenter), symbolized as ω (), is one of the orbital elements of an orbiting body. . Parametrically, ω is the angle from the body's ascending node to its periapsis, measured in the dire
The minimum separation at periastron is about 1.1 solar radii; the maximum separation at apastron is 4.8 solar radii. The orbit is inclined at about 45 degrees with respect to the plane of the sky. The orientation of periastron changes by about 4.2 degrees per year in direction of the orbital motion (relativistic precession of periastron).
ϖ = Ω + ω in separate planes. In celestial mechanics, the longitude of the periapsis, also called longitude of the pericenter, of an orbiting body is the longitude (measured from the point of the vernal equinox) at which the periapsis (closest approach to the central body) would occur if the body's orbit inclination were zero.
Periastron epoch (T) 54539.0162 ± 0.0003 reduced HJD: Semi-amplitude (K 1) (primary) 108.053 ± 0.072 km/s: Semi-amplitude (K 2) (secondary) 110.911 ± 0.071 km/s ...
They feed on the sap of oaks; the females produce a red dye, also called "kermes", that is the source of natural crimson. [1] The word "kermes" is derived from Turkish qirmiz or kirmizi ( قرمز ), "crimson" (both the colour and the dyestuff), [ 2 ] itself deriving from Persian *کرمست (*kermest) via Proto-Indo-Iranian *kŕ̥miš, from ...