Table of Contents
What kind of star is Megrez?
Megrez is a main star in the constellation Ursa Major and makes up the constellation outline. Based on the spectral type (A3Vvar) of the star, the star’s colour is blue – white . Megrez is a Binary or Multiple star system.
Is Megrez a main sequence star?
Like most other Dipper stars, Megrez is a run-of-the-mill A-class main sequence star, and there is nothing about Megrez that distinguishes it from most other stars of its spectral class that are in the prime of their lives, and converting hydrogen in their core into helium.
What is the luminosity of Megrez?
14 L☉
Delta Ursae Majoris/Luminosity
How far are the Big Dipper stars from Earth?
about 80 light-years away
The five stars in the Ursa Major Moving Group—Mizar, Merak, Alioth, Megrez, and Phecda—are all about 80 light-years away, varying by “only” a few light-years, with the greatest difference between Mizar at 78 light-years away and Phecda at 84 light-years away.
How old is Mizar?
370 Myr
Mizar
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Age | 370 Myr |
| Mizar Ab | |
| Mass | 2.2381±0.0219 M ☉ |
| Radius | 2.4 ± 0.1 R ☉ |
How far is the star Megrez from Earth?
58.41 light years
Delta Ursae Majoris/Distance to Earth
What kind of star is the star Megrez?
It connects the bowl to the handle, formed by the brighter Alioth (Epsilon Ursae Majoris), Mizar (Zeta Ursae Majoris) and Alkaid (Eta Ursae Majoris). Megrez has the stellar classification A3V, indicating a hydrogen-fusing dwarf still on the main sequence, appearing white or blue-white in colour.
Stellar properties. Megrez is a marginally outlying member of the Ursa Major moving group, an association of stars that share a common motion through space and likely formed in the same molecular cloud. The space velocity components of Delta Ursae Majoris in the galactic coordinate system are [U, V, W] = [+15.35, +1.17, –11.52] km s−1.
Which is the faintest star in the Big Dipper?
2019-09-10 Megrez, Delta Ursae Majoris (δ UMa), is the faintest of the seven stars that form the Big Dipper asterism. It is a third magnitude star with an apparent magnitude of 3.312, located at a distance of 80.5 light years from Earth.
Which is the dimmest star in the Ursa Major constellation?
Delta Ursae Majoris ( δ Ursae Majoris, abbreviated Delta UMa, δ UMa ), formally named Megrez / ˈmiːɡrɛz /, is a star in the northern circumpolar constellation of Ursa Major. With an apparent magnitude of +3.3, it is the dimmest of the seven stars in the Big Dipper asterism.