71 Tauri Star Facts (Type, Distance, Magnitude, Age, Colour, Location and more)

71 Tauri is a main sequence star located in the constellation of Taurus, The Bull. It is not part of the Taurus constellation outline but is within the borders of the constellation.

Based on the spectral type (F0V...), 71 Tauri colour is yellow - white.

71 Tauri temperature is in the range of between 6,000 and 7,500 Kelvin. 71 Tauri effective temperature is 7,390 Kelvin which is hotter than the Sun's effective temperature, which is 5,777 Kelvin. Based on a parallax of 20.37, 71 Tauri distance from Earth can be calculated at being 160.12 light years away or 47.94 parsecs.

71 Tauri is a naked-eye star, so you don't need a telescope or binoculars when you look up on a clear night. The lower the magnitude, the easier it will be to see it.

Location

The location of the 71 Tauri in the night sky is determined by the right ascension (R.A.) and declination (Dec.). These are equivalent to the Longitude and Latitude on Earth. The Right Ascension (Longitude) is expressed in time (hh:mm:ss) and is how far the star is along Earth's celestial equator. If the R.A. is positive, then it's eastwards and vice versa.

The Declination (Latitude) is how far north or south the object is compared to the celestial equator and is expressed in degrees. If the value is positive, it is north of the celestial equator. For 71 Tauri, the location is 04h 26m 20.67 and +15° 37` 06.0 .

Based on the location of Taurus, 71 Tauri can be located in the equatorial region of the celestial sky. The celestial hemisphere is equivalent to the hemispheres on Earth. Being in the equatorial region, 71 Tauri can be seen in both terrestrial hemispheres but there is a caveat of depending how far south and north you are. 71 Tauri is on the Ecliptic. The Ecliptic is the path that the Earth takes as it orbits the Sun. As the Earth is titled, we therefore have Celestial and Ecliptic hemispheres and they can be different for a star.

Physical Properties

Spectral Type

71 Tauri spectral type of F0V... which means its colour and type is yellow to white main sequence star. There is no relationship between colour and size. For example, a red star can be large or small. Small stars are more energy efficient than larger stars and live longer.

71 Tauri Luminosity

Luminosity is the amount of energy a star pumps out relative to the amount that our star, the Sun, gives out. Our star, the Sun's value is 1. 71 Tauri Luminosity figure of 26.488 comes from the Vizier online catalogue. The star generates more energy than our star.

71 Tauri Size (Radius)

71 Tauri radius has been calculated as being 3.39 times bigger than the Sun. The Sun's radius is 695,800km, therefore, the 71 Tauri radius is an estimated 2,358,762.km. If you need the star's diameter, you just need to multiply the radius by 2.

71 Tauri Surface Gravity

The Surface Gravity of 71 Tauri as measured in CGS (Centimeter-Gram-Second) is 3.508. The gravity has a relationship to its mass and radius. The larger the mass, the larger the gravity. 71 Tauri surface gravity has an uncertainty range of between - and +.

Magnitude (Apparent / Absolute / Visible)

A number represents a star’s magnitude, whether apparent/visual or absolute. The smaller the number, the brighter the star is. The Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

71 Tauri apparent magnitude is 4.48, which is a measure of the star's brightness as seen from Earth. Apparent Magnitude is also known as Visual Magnitude.

If you use the 1997 parallax value, 71 Tauri' absolute magnitude is 1.08. If you use the 2007 parallax value, 71 Tauri' absolute magnitude is 1.03. Absolute Magnitude is the star's apparent magnitude from 10 parsecs or 32.6 light years. The magnitude assumes nothing is between the object and the viewer, such as dust clouds. To compare different stars' actual brightness, you would best use Absolute rather than Apparent Magnitude.

71 Tauri is visible from Earth without needing binoculars or a telescope. The lower the Apparent Magnitude of a star or other object is, the easier it is to see in the night sky. An object with a magnitude greater than 6.5 cannot be seen without a telescope or other device.


Radial Velocity and Proper Motion

In simplistic terms, all non-rogue stars, like planets, orbit around a central object, although that is actually not true. Where is the centre of the Solar System. For simplicity it's the central star, such as the Sun. In the case of a star, it's the galactic centre. The constellations we see today will be different than they were 50,000 years ago or 50,000 years from now.

Proper motion details the movements of these stars and is measured in milliarcseconds. 71 Tauri is moving -32.19 ± 0.32 milliarcseconds/year towards the north and 114.31 ± 0.6 milliarcseconds/year east if we saw them in the horizon.

The radial velocity, the speed at which the 71 Tauri is moving away from the Sun, is 40.80000 km/s with an error of about 10.00 km/s . When the value is negative, the star and the Sun are getting closer to one another; likewise, a positive number means that two stars are moving away. It's nothing to fear as the stars are so far apart they won't collide in our lifetime, if ever.

71 Tauri Fact Table

The table is scrollable if you can't see everything, just swipe the table to see the hidden information.

Primary Name71 Tauri
Spectral TypeF0V...
Star Type based on Spectral TypeMain Sequence Star
Colour yellow to white
GalaxyMilky Way
ConstellationTaurus
Main StarNo
Absolute Magnitude 1.08 / 1.03
Visual / Apparent Magnitude4.48
Visible From Earth Yes
Right Ascension (R.A.)04h 26m 20.67
Declination (Dec.)+15° 37` 06.0
Galactic Latitude-22.60309057 °
Galactic Longitude180.18160712 °
1997 Distance from Earth20.86000 Parallax (milliarcseconds)
 156.36 Light Years
 47.94 Parsecs
2007 Distance from Earth20.37000 Parallax (milliarcseconds)
 160.12 Light Years
 49.09 Parsecs
 10,125,468.783 Astronomical Units
Galacto-Centric Distance24,282.861 Light Years / 7,445 Parsecs
Proper Motion Dec.-32.19000 ± 0.32000 milliarcseconds/year
Proper Motion RA.114.31000 ± 0.60000 milliarcseconds/year
B-V Index0.26
Radial Velocity40.80000 ± 10 km/s
Eccentricity0.14930
Semi-Major Axis7112.0000000
Luminosity (Lsun)26.4880000
Effective Temp. (Kelvin) 7,390
Surface Gravity (cgs) 3.508
Radius3.39

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeDelta Scuti Variable

Sources and Links


Modified Date13th July 2024
Published DateJan 2015
SIMBAD SourceLink
EPIC SourceEpic Search
SourceVizier, Vizier,


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