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19 Lyncis B (Companion Star) Facts

19 Lyncis B Facts

  • 19 Lyncis B is a main sequence star that can be located in the constellation of Lynx. The description is based on the spectral class.
  • 19 Lyncis B is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (B8V) of the star, the star's colour is blue .
  • The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.
  • The star is calculated at being about 468.63 light years away from us. Distance

19 Lyncis B's Alternative Names

The Id of the star in the Yale Bright Star Catalogue is HR2784. HIP35785 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD57103.

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 19 Lyncis B. The Flamsteed name can be shortened to 19 Lyn B.

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+55 1192.

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

Location of 19 Lyncis B

The location of the main sequence 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 19 Lyncis B, the location is 07h 22m 52.06 and +55° 16` 53.3 .

Physical Properties of 19 Lyncis B

19 Lyncis B Temperature and Colour

Based on the star's spectral type of B8V , 19 Lyncis B's colour and type is blue main sequence star. The star has a B-V Colour Index of -0.07 which means the star's temperature is about 10,845 Kelvin. The temperature was calculated using information from Morgans @ Uni.edu.

19 Lyncis B Radius

19 Lyncis B estimated radius has been calculated as being 2.63 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 1,832,013.29.km. If you need the diameter of the star, you just need to multiple the radius by 2. The figure is derived at by using the formula from SDSS rather than peer reviewed papers. It has been known to produce widely incorrect figures.

19 Lyncis B Apparent and Absolute Magnitudes

19 Lyncis B has an apparent magnitude of 5.80 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of 0.01 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 19 Lyncis B

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 6.96000 which gave the calculated distance to 19 Lyncis B as 468.63 light years away from Earth or 143.68 parsecs. If you want that in miles, it is about 2,754,900,208,635,035.15, based on 1 Ly = 5,878,625,373,183.61 miles.

Travel Time to 19 Lyncis B

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)
Walking478,567,767,712.07
Car1202,618,925,590.40
Airbus A380736426,998,737.57
Speed of Sound (Mach 1)767.269409,596,987.30
Concorde (Mach 2)1,534.54204,798,226.73
New Horizons Probe33,0009,523,365.78
Speed of Light670,616,629.00468.63

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 19 Lyncis B Facts and Figures

Visual Facts


Primary / Proper / Traditional Name19 Lyncis B
Alternative NamesHD 57103, HIP 35785, HR 2784, 19 Lyn B, BD+55 1192
Spectral TypeB8V
Constellation's Main StarNo
Multiple Star SystemYes
Star Type Main Sequence Dwarf Star
ColourBlue
GalaxyMilky Way
ConstellationLynx
Absolute Magnitude 0.01
Visual / Apparent Magnitude5.80
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)07h 22m 52.06
Declination (Dec.)+55° 16` 53.3
Galactic Latitude26.36554881 degrees
Galactic Longitude161.95992273 degrees
Distance from Earth6.96000 Parallax (milliarcseconds)
 468.63 Light Years
 143.68 Parsecs
 29,635,920.86 Astronomical Units
B-V Index-0.07
Radial Velocity4.20000 ± 4.30 km/s
Associated / Clustered Stars19 Lyncis

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Calculated Facts


Radius (x the Sun)2.63
Effective Temperature10,845 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


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