8 Lacerta B is a blue main sequence dwarf star that can be located in the constellation of Lacerta. 8 Lacerta B is the brightest star in Lacerta based on the Hipparcos 2007 apparent magnitude. The star can not be seen by the naked eye, you need a telescope to see it.
The Id of the star in the Yale Bright Star Catalogue is HR8603. HIP111544 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD214168.
The location of the star in the galaxy 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 star is compared to the celestial equator and is expressed in degrees. For 8 Lacerta B, the location is 22h 35m 52.10 and +39d 37` 41.4 .
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 3190.0000000 that I have given is based on the Spectral Types page that I have found on the Internet. You might find a different figure, one that may have been calculated rather than generalised that I have done. The figure is always the amount times the luminosity of the Sun. It is an imprecise figure because of a number of factors including but not limited to whether the star is a variable star and distance.
8 Lacerta B has a spectral type of B2V. This means the star is a blue main sequence dwarf star. The star has a B-V Colour Index of -0.14 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 13,196 Kelvin.
8 Lacerta B Radius has been calculated as being 0.66 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 459,707.95.km. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.
The star has a companion star which is in orbit close by, it has at least the following companions in close orbit, .
8 Lacerta B has an apparent magnitude of 6.60 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 2.16 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.
Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 12.92 which gave the calculated distance to 8 Lacerta B as 252.45 light years away from Earth or 77.40 parsecs. It would take a spaceship travelling at the speed of light, 252.45 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.
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.
|Traditional/Proper Name||8 Lacerta B|
|Flamsteed Name||8 Lacertae|
|Flamsteed Short Name||8 Lac|
|Hipparcos Library I.D.||111544|
|Yale Bright Star Catalogue (HR) Id||8603|
|Henry Draper Designation||214168|
|Star Type||main sequence dwarf star|
|Visual / Apparent Magnitude||6.60|
|Naked Eye Visible||Requires a 7x50 Binoculars - Magnitudes|
|Right Ascension (R.A.)||22h 35m 52.10|
|Declination (Dec.)||+39d 37` 41.4|
|Galactic Latitude||-16.15 degrees|
|Galactic Longitude||96.37 degrees|
|Distance from Earth||12.92 Parallax (milliarcseconds)|
|252.45 Light Years|
|Radial Velocity||-11.70 ± 0.90 km/s|
|Luminosity (x the Sun)||3,190.0000000|
|Calculated Effective Temperature||13,196 Kelvin|
The star has been identified as being a multi-star system, one in which there is at least one star in close orbit to another star or two or more stars orbiting a central point. The stars may be of equal mass, unequal mass where one star is stronger than the other or be in groups orbiting a central point which doesn't necessarily have to be a star. More information can be found on my dedicated multiple star systems page. The source of the info is Simbad. The file is dated 2000 so any differences between this and any other source will be down to the actual source from where the information came from.
|Proper Motion mas/yr|
|H.D. Id||B.D. Id||Star Code||Magnitude||R.A.||Dec.||Spectrum||Colour||Year|