Where in the sky is the Gemini constellation?
Gemini is fairly easy to spot in the sky, even for amateur stargazers. It is located northeast of the constellation Orion and between the Taurus and Cancer constellations. Best viewing is during February. By April and May, the constellation can be seen soon after sunset in the west.
Where is Castor in the sky?
constellation Gemini
How do you spot a Gemini?
During the first couple of months of the year, Gemini can most easily be found by first locating the two brightest stars in Orion (a constellation which looks like a huge hour glass) and the two brightest stars in Canis Major and Canis Minor (the “dog” stars) that follow Orion.
What is the lifespan of Castor?
79.1 years
How much longer will Pollux live?
They are roughly one-tenth the mass and diameter of the Sun. They can live up to one hundred billion years.
How old is castor A?
Castor A
| Spectral class | A1V + dM1e |
|---|---|
| Age | 370 million years |
| Rotational velocity (α Gem Aa) | 18 km/s |
| Surface gravity (α Gem Aa) | 4.2 cgs |
| Right ascension | 07h 34m 35.863s |
What star type is Castor?
Castor C is a variable star, classified as a BY Draconis type. BY Draconis variables are cool dwarf stars which vary as they rotate due to starspots or other variations in their photospheres. The two red dwarfs of Castor C are almost identical, with masses around a half M ☉and luminosities less than 10% of the Sun.
Who killed Castor?
Castor was murdered by Idas, but Pollux killed Lynceus; in retribution Zeus killed Idas with a thunderbolt. Zeus then gave Pollux the choice between spending all his time on Olympus or giving half of his immortality to his mortal brother, so that they could alternate realms together.
What is a 6 star system called?
Binaries consist of two stars orbiting each other, or more specifically, orbiting a common center of gravity. Some of these systems are known to be eclipsing binaries; the two stars eclipse each other, as seen from Earth. This six-star system is what astronomers call a sextuplet.
Is Pollux a red giant?
Pollux is a star that lies in the constellation Gemini. The star is a red giant that has finished fusing hydrogen in its core and is now fusing other lighter elements into heavier ones.
What color Stars last the longest?
red dwarfs
Is Pollux hotter than the sun?
With all forms of radiation counted, Pollux is about 43 times more energetic than our sun. A large planet, at least 2.3 times the mass of Jupiter, was confirmed in 2006 to be orbiting Pollux.
Is Pollux a high mass star?
Pollux is a orange-red giant star of spectral and luminosity type K0 IIIb. Given that Pollux has a higher mass and is more evolved than Sol, the star is likely to be much younger than Sol’s 4.6 billion years. Its relatively high mass estimates, however, suggest that it has not yet suffered substantial mass loss.
Why is Pollux Orange?
Once an A-type main sequence star, Pollux has exhausted the hydrogen at its core and evolved into a giant star with a stellar classification of K0 III. The effective temperature of this star’s outer envelope is about 4666 K, which lies in the range that produces the characteristic orange hue of K-type stars.
Is Pollux the North Star?
Pollux, Beta Geminorum (β Gem), is an orange giant star located in the constellation Gemini. With an apparent magnitude of 1.14, it is the brightest star in Gemini and the 17th brightest star in the sky….Pollux – Beta Geminorum.
| Spectral class | K0IIIb |
|---|---|
| Dec.: 45.80 mas/yr | |
| Mass | 1.91 ± 0.09 M☉ |
| Luminosity | 43 L☉ |
| Radius | 8.8 ± 0.1 R☉ |
What are the brightest stars in Gemini?
The brightest star in Gemini is Pollux, and the second-brightest is Castor.