Universe Guide

110 Tauri

110 Tauri Facts

110 Tauri's Alternative Names

The Id of the star in the Yale Bright Star Catalogue is HR1774. HIP25216 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD35189.

Flamsteed designations are named after the creator, Sir John Flamsteed. Sir John named the stars in the constellation with a number and its latin name, this star's Flamsteed designation is 110 Tauri. The Flamsteed name can be shortened to 110 Tau.

BD number is the number that the star was filed under in the Durchmusterung or Bonner Durchmusterung, a star catalogue that was put together by the Bonn Observatory between 1859 to 1903. The star's BD Number is BD+16 765.

More details on objects' alternative names can be found at Star Names .

Location of 110 Tauri

The location of the subgiant star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For 110 Tauri, the location is 05h 23m 37.72 and +16° 41` 57.7 .

Radial Velocity and Proper Motion of 110 Tauri

Proper Motion

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that 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 are measured in milliarcseconds. The star is moving -22.56 ± 0.36 milliarcseconds/year towards the north and -27.80 ± 0.71 milliarcseconds/year east if we saw them in the horizon.

Radial Velocity

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is 20.90 km/s with an error of about 2.90 km/s . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

110 Tauri Luminosity

Luminosity is the amount of energy that a star pumps out and its relative to the amount that our star, the Sun gives out. The figure of 46.97 that I have given is based on the value in the Simbad Hipparcos Extended Catalogue at the University of Strasbourg from 2012.

Physical Properties (Colour, Temperature) of 110 Tauri

110 Tauri Colour and Temperature

110 Tauri has a spectral type of A2IV. This means the star is a blue - white subgiant star. The star has a B-V Colour Index of 0.14 which means the star's temperature is about 8,153 Kelvin. The temperature was calculated using information from Morgans @ Uni.edu at being .

110 Tauri Radius

Radius has been calculated as being 3.87 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 2,696,180.23.km. If you need the diameter of the star, you just need to multiple the radius by 2. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 3.53. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

110 Tauri Apparent and Absolute Magnitudes

110 Tauri has an apparent magnitude of 6.09 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of 0.41 If you used the 2007 Parallax value, you would get an absolute magnitude of 0.61. Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Distance to 110 Tauri

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 7.32 which gave the calculated distance to 110 Tauri as 445.58 light years away from Earth or 136.61 parsecs. If you want that in miles, it is 298,813,357,550.

In 2007, Hipparcos data was revised with a new parallax of 8.01 which put 110 Tauri at a distance of 407.20 light years or 124.84 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.

Using the 2007 distance, the star is roughly 25,749,918.98 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.

The star's Galacto-Centric Distance is 7,520.00 Parsecs or 24,527.48 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

Travel Time to 110 Tauri

The time it will take to travel to this star is dependent on how fast you are going. U.G. has done some calculations as to how long it will take going at differing speeds. A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).

The New Horizons space probe is the fastest probe that we've sent into space at the time of writing. Its primary mission was to visit Pluto which at the time of launch (2006), Pluto was still a planet.

DescriptionSpeed (m.p.h.)Time (years)
Airbus A380736371,025,939.31
Speed of Sound (Mach 1)767.269355,905,283.97
Concorde (Mach 2)1,534.54177,952,410.06
New Horizons Probe33,0008,275,002.77
Speed of Light670,616,629.00407.20

Source of Information

The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

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Additional 110 Tauri Facts and Figures

Visual Facts

Primary / Proper / Traditional Name110 Tauri
Alternative NamesHD 35189, HIP 25216, HR 1774, 110 Tau, BD+16 765
Spectral TypeA2IV
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeSubgiant Star
GalaxyMilky Way
Absolute Magnitude 0.41 / 0.61
Visual / Apparent Magnitude6.09
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)05h 23m 37.72
Declination (Dec.)+16° 41` 57.7
Galactic Latitude-10.82 degrees
Galactic Longitude187.68 degrees
1997 Distance from Earth7.32 Parallax (milliarcseconds)
 445.58 Light Years
 136.61 Parsecs
2007 Distance from Earth8.01 Parallax (milliarcseconds)
 407.20 Light Years
 124.84 Parsecs
 25,749,918.98 Astronomical Units
Galacto-Centric Distance24,527.48 Light Years / 7,520.00 Parsecs
Proper Motion Dec.-22.56 ± 0.36 milliarcseconds/year
Proper Motion RA.-27.80 ± 0.71 milliarcseconds/year
B-V Index0.14
Radial Velocity20.90 ± 2.90 km/s
Semi-Major Axis8502.00
Stellar Luminosity (Lsun)46.97

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Calculated Facts

Radius (x the Sun)3.53
Effective Temperature8,153 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

Comments and Questions

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