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298 G. Puppis, HD70761, HIP41074

298 G. Puppis is a blue to white supergiant star that can be located in the constellation of Puppis. The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.

298 G. Puppis's Alternative Names

HIP41074 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD70761.

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 298 G. Puppis. There are no stars with a Gould designation in Ursa Major for example.

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

Location of 298 G. Puppis

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 298 G. Puppis, the location is 08h 22m 49.94 and -26° 20` 53.6 .

Physical Properties (Colour, Temperature) of 298 G. Puppis

298 G. Puppis has a spectral type of F2Iab. This means the star is a blue to white supergiant star. The star has a B-V Colour Index of 0.37 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 6,501 Kelvin. The figure is derived at by using the formula from SDSS and has been known to produce widely incorrect figures.

298 G. Puppis Apparent and Absolute Magnitudes

298 G. Puppis has an apparent magnitude of 5.88 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 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 298 G. Puppis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as -0.06 which gave the calculated distance to 298 G. Puppis as -54360.56 light years away from Earth or -16666.67 parsecs. It would take a spaceship travelling at the speed of light, -54360.56 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

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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298 G. Puppis Facts

Visual Facts

Alternative NamesHD 70761, HIP 41074
Star Type very luminous Supergiant Star
GalaxyMilky Way
Visual / Apparent Magnitude5.88
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)08h 22m 49.94
Declination (Dec.)-26° 20` 53.6
Galactic Latitude6.16 degrees
Galactic Longitude246.77 degrees
Distance from Earth-0.06 Parallax (milliarcseconds)
 -54360.56 Light Years
 -16666.67 Parsecs
B-V Index0.37
Radial Velocity67.20 ± 1.40 km/s
Spectral TypeF2Iab
Colour(F) blue to white

Estimated Facts

Calculated Effective Temperature6,501 Kelvin

Sources and Links

SIMBAD SourceLink

Multi-Star System

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. IdB.D. IdStar CodeMagnitudeR.A.Dec.SpectrumColourYear
70761-25 5988.2A6.60000-9.000004.00000F0Yellow/White

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