Universe Guide
HomeAliensConstellationsTelevision and Films ListFact ListGames ListWarcraftSearchTwitterFacebook

142 G. Ceti, HD8713, HIP6687

142 G. Ceti is a orange to red star that can be located in the constellation of Cetus. The description is based on the spectral class. 142 G. Ceti is not part of the constellation but is within the borders of the constellation.

The star can not be seen by the naked eye, you need a telescope to see it.

142 G. Ceti's Alternative Names

HIP6687 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD8713.

The Gould star designation is one that was designed by American astronomer, Benjamin Apthorp Gould. Gould stars are predominantly in the Southern and Equatorial constellations but do appear in northern constellations such as Bootes and Orion. The star has the designation 142 G. Ceti. There are no stars with a Gould designation in Ursa Major for example.

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-04 207.

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

Location of 142 G. Ceti

The location of the 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 star is compared to the celestial equator and is expressed in degrees. For 142 G. Ceti, the location is 01h 25m 52.33 and -03° 55` 38.4 .

Proper Motion of 142 G. Ceti

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 -26.22 ± 0.27 miliarcseconds/year towards the north and 61.49 ± 0.41 miliarcseconds/year east if we saw them in the horizon. . 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.

142 G. Ceti 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 42.19 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 142 G. Ceti

142 G. Ceti has a spectral type of K0. This means the star is a orange to red star. The star is 7,433.00 Parsecs from the Galactic Centre or terms of Light Years is 24,243.72 s. The star has a B-V Colour Index of 1.34 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 4,316 Kelvin.

142 G. Ceti Radius has been calculated as being 8.49 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 5,904,872.52.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 8.07. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

142 G. Ceti Apparent and Absolute Magnitudes

142 G. Ceti has an apparent magnitude of 6.50 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 1.47 If you used the 2007 Parallax value, you would get an absolute magnitude of 1.58. 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 142 G. Ceti

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 9.88 which gave the calculated distance to 142 G. Ceti as 330.12 light years away from Earth or 101.21 parsecs. It would take a spaceship travelling at the speed of light, 330.12 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

In 2007, Hipparcos data was revised with a new parallax of 10.36 which put 142 G. Ceti at a distance of 314.83 light years or 96.53 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 19,910,603.01 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 7,433.00 Parsecs or 24,243.72 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

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.

Hide Explanations
Show GridLines

142 G. Ceti Facts

Visual Facts


Primary / Proper / Traditional Name142 G. Ceti
Alternative NamesHD 8713, HIP 6687, BD-04 207
Spectral TypeK0
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
Colour orange to red
GalaxyMilky Way
ConstellationCetus
Absolute Magnitude 1.47 / 1.58
Visual / Apparent Magnitude6.50
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)01h 25m 52.33
Declination (Dec.)-03° 55` 38.4
Galactic Latitude-65.38 degrees
Galactic Longitude143.94 degrees
1997 Distance from Earth9.88 Parallax (milliarcseconds)
 330.12 Light Years
 101.21 Parsecs
2007 Distance from Earth10.36 Parallax (milliarcseconds)
 314.83 Light Years
 96.53 Parsecs
 19,910,603.01 Astronomical Units
Galacto-Centric Distance24,243.72 Light Years / 7,433.00 Parsecs
Proper Motion Dec.-26.22 ± 0.27 milliarcseconds/year
Proper Motion RA.61.49 ± 0.41 milliarcseconds/year
B-V Index1.34
Stellar Luminosity (Lsun)42.19

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Facts


Calculated Effective Temperature4,316 Kelvin

Sources and Links


SIMBAD SourceLink

Related Stars


Add a Comment


Name:
Email: (Optional)
Comment:
   
x
This website is using cookies. More info. That's Fine