What is the classification of Arcturus?
What is the classification of Arcturus?
K1.5IIIFe-0.5
Arcturus/Spectral type
Is Arcturus a medium sized star?
While this all sounds like jargon, it means that Arcturus is a bright, large star that has moved beyond the main sequence (the phase our own sun is in). Arcturus is so bright that it ranks fourth among the brightest stars in the sky (behind Sirius, Canopus, and the binary system Alpha Centauri).
Is Arcturus a high or low mass star?
The star Arcturus is a little bit heavier than our own star, the Sun.
Is Arcturus a variable star?
It is classified as a New Suspected Variable (NSV) and has the designation NSV 6603. Arcturus has a very high proper motion. The star is moving at 122 km/s relative to the solar system. It has a larger proper motion than any other first magnitude star in our neighbourhood with the exception of Alpha Centauri.
Is Arcturus a supergiant?
Located relatively close at 36.7 light-years from the Sun, Arcturus is a single red giant of spectral type K1. 5III—an aging star around 7.1 billion years old that has used up its core hydrogen and evolved off the main sequence….Arcturus.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Database references | |
| SIMBAD | data |
| Data sources: |
What is Arcturus temperature?
4,290 K
Arcturus/Surface temperature
Astronomers have assigned Arcturus the spectral class designation K, which tells us that it is an orange giant with a relatively cool surface temperature of about 4,290 Kelvin (by comparison, the Sun’s surface temperature is about 5,778 Kelvin, the Sun’s spectral class is G).
What is the size of Arcturus?
10.98 million mi
Arcturus/Radius
What elements is Arcturus made of?
As a star that has evolved out of the “main sequence,” Arcturus has fully shifted from the fusion of hydrogen to helium in at its core to the fusion of helium to carbon and oxygen, with trace activity of other nuclear processes.
What is a goat star?
Capella is the Latin word for nanny goat, and this bright star is often called the Goat Star. The point of light we see as Capella looks distinctly golden. This star shares a spectral type – type G – with our sun. In fact, Capella is the biggest and brightest yellow star in our sky.
What is the magnitude of the star Arcturus?
Arcturus has an apparent magnitude of -0.04 and an absolute magnitude of 0.2. (The brighter the star, the lower its apparent and absolute magnitudes .) The star is in the latter stages of its life. Considered a red giant, Arcturus has stopped fusing hydrogen in its core, as the sun does,…
What is the scientific name for Arcturus?
The designation of Arcturus as α Boötis (Latinised to Alpha Boötis) was made by Johann Bayer in 1603. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalog and standardize proper names for stars.
Where is Arcturus located in the sky?
Arcturus is a red giant star in the Northern Hemisphere of Earth’s sky that is the brightest star in the constellation Boötes (the Herdsman). Arcturus is also among the brightest stars that can be seen from Earth.
What are the physical properties of Arcturus?
Properties. Arcturus is an evolved red giant star with a stellar classification of K0 III. As the brightest K-type giant in the sky, it was the subject of an atlas of its visible spectrum, made from photographic spectra taken with the coudé spectrograph of the Mt. Wilson 2.5m telescope published in 1968,…
