HD 221420

https://search.allgraph.ro/search.html?q=HD%20221420

Farnesyltransferase inhibitorThe farnesyltransferase inhibitors (FTIs) are a class of experimental cancer drugs that target protein farnesyltransferase with the downstream effect of preventing the proper functioning of the Ras (protein), which is commonly abnormally active in cancer.

Farnesyltransferase

inhibitor

List of stars in OctansThis is the list of notable stars in the constellation Octans, sorted by decreasing brightness.

List

stars

Octans

List of exoplanets discovered in 2019This list of exoplanets discovered in 2019 is a list of confirmed exoplanets that were first observed during 2019. For exoplanets detected only by radial velocity, the listed value for mass is a lower limit. See Minimum mass for more information.

HD 221420HD 221420 (HR 8935; Gliese 4340) is a likely binary star system in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.81, allowing it to be faintly seen with the naked eye. The object is relatively close at a distance of 102 light years but is receding with a heliocentric radial velocity of 26.5 km/s. HD 221420 has a stellar classification of G2 IV-V, indicating a solar analogue with a luminosity class intermediate between a subgiant and a main sequence star. The object is also extremely chromospherically inactive. It has a comparable mass to the Sun and a diameter of 1.95 R☉. It shines with a luminosity of 4 L☉ from its photosphere at an effective temperature of 5,830 K, giving a yellow glow. HD 221420 is younger than the Sun at 3.65 billion years. Despite this, the star is already beginning to evolve off the main sequence. Like most planetary hosts, HD 221420 has a metallicity over twice of that of the Sun and spins modestly with a projected rotational velocity 2.8 km/s. There is a mid-M-dwarf star with a similar proper motion and parallax to HD 221420, which is likely gravitationally bound to it. The two stars are separated by 698 arcseconds, corresponding to a distance of 21,756 AU.

221420

List of star systems within 100–150 light-yearsThis is a list of star systems within 100–150 light years of Earth.

Quick Access