Tureis / Rho Puppis Star Facts (Type, Distance, Magnitude, Age, Colour, Location and more)

Tureis, also known as Rho Puppis (Bayer) is a luminous giant star located in the constellation of Puppis, The Stern. Tureis is a major star and forms part of the constellation.

Based on the spectral type (F2mF5IIp), Tureis colour is yellow - white.

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Tureis temperature is in the range of between 6,000 and 7,500 Kelvin. Tureis effective temperature is 4,995 Kelvin which is cooler than the Sun's effective temperature which is 5,777 Kelvin. Based on a parallax of 51.33, Tureis distance from Earth can be calculated at being 63.54 light years away or 19.23 parsecs.

Tureis is a naked-eye star, so you don't need a telescope or binoculars when you look up on a clear night. The lower the magnitude, the easier it will be to see it.

Tureis is a delta scuti variable star. Variable stars are stars whose size and/or brightness changes over time. Tureis brightness ranges from 2.955 (dimmest) to 2.86 over a period of 0.1409 days.

Location

The location of the Tureis in the night sky is determined by the right ascension (R.A.) and declination (Dec.). These are equivalent to the Longitude and Latitude on Earth. The Right Ascension (Longitude) is expressed in time (hh:mm:ss) and is how far the star is along Earth's celestial equator. If the R.A. is positive, then it's eastwards and vice versa.

The Declination (Latitude) is how far north or south the object is compared to the celestial equator and is expressed in degrees. If the value is positive, it is north of the celestial equator. For Tureis, the location is 08h 07m 32.70 and -24° 18` 16.0 .

Based on the location of Puppis, Tureis can be located in the southern hemisphere of the celestial sky. The celestial hemisphere is equivalent to the hemispheres on Earth. Tureis is south of the Ecliptic. The Ecliptic is the path that the Earth takes as it orbits the Sun. As the Earth is titled, we therefore have Celestial and Ecliptic hemispheres and they can be different for a star.

Physical Properties

Spectral Type

Tureis spectral type of F2mF5IIp which means its colour and type is yellow to white luminous giant star. There is no relationship between colour and size. For example, a red star can be large or small. Small stars are more energy efficient than larger stars and live longer.

Tureis Luminosity

Luminosity is the amount of energy a star pumps out relative to the amount that our star, the Sun, gives out. Our star, the Sun's value is 1. Tureis Luminosity figure of 23.81 comes from the Vizier online catalogue. The star generates more energy than our star.

Iron Abundance

Tureis Iron Abundance is 0.36 with an error value of 9.99 Fe/H, with the Sun having a value of 1 to put it into context. The value comes from the Hipparcos Extended Catalog.

Magnitude (Apparent / Absolute / Visible)

A number represents a star’s magnitude, whether apparent/visual or absolute. The smaller the number, the brighter the star is. The Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Tureis apparent magnitude is 2.83, which is a measure of the star's brightness as seen from Earth. Apparent Magnitude is also known as Visual Magnitude.

If you use the 1997 parallax value, Tureis' absolute magnitude is 1.41. If you use the 2007 parallax value, Tureis' absolute magnitude is 1.38. Absolute Magnitude is the star's apparent magnitude from 10 parsecs or 32.6 light years. The magnitude assumes nothing is between the object and the viewer, such as dust clouds. To compare different stars' actual brightness, you would best use Absolute rather than Apparent Magnitude.

Tureis is visible from Earth without needing binoculars or a telescope. The lower the Apparent Magnitude of a star or other object is, the easier it is to see in the night sky. An object with a magnitude greater than 6.5 cannot be seen without a telescope or other device.


Radial Velocity and Proper Motion

In simplistic terms, all non-rogue stars, like planets, orbit around a central object, although that is actually not true. Where is the centre of the Solar System. For simplicity it's the central star, such as the Sun. In the case of a star, it's the galactic centre. The constellations 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 is measured in milliarcseconds. Tureis is moving 46.23 ± 0.07 milliarcseconds/year towards the north and -83.35 ± 0.15 milliarcseconds/year east if we saw them in the horizon.

The radial velocity, the speed at which the Tureis is moving away from the Sun, is 45.80000 km/s with an error of about 0.60 km/s . When the value is negative, the star and the Sun are getting closer to one another; likewise, a positive number means that two stars are moving away. It's nothing to fear as the stars are so far apart they won't collide in our lifetime, if ever.

Tureis Fact Table

The table is scrollable if you can't see everything, just swipe the table to see the hidden information.

Primary NameTureis
Spectral TypeF2mF5IIp
Star TypeDelta Sct Variable
Colour yellow to white
GalaxyMilky Way
ConstellationPuppis
Main StarYes
Absolute Magnitude 1.41 / 1.38
Visual / Apparent Magnitude2.83
Visible From Earth Yes
Right Ascension (R.A.)08h 07m 32.70
Declination (Dec.)-24° 18` 16.0
Galactic Latitude4.40200108 °
Galactic Longitude243.14853003 °
1997 Distance from Earth51.99000 Parallax (milliarcseconds)
 62.74 Light Years
 19.23 Parsecs
2007 Distance from Earth51.33000 Parallax (milliarcseconds)
 63.54 Light Years
 19.48 Parsecs
 4,018,010.428 Astronomical Units
Galacto-Centric Distance24,165.442 Light Years / 7,409 Parsecs
Proper Motion Dec.46.23000 ± 0.07000 milliarcseconds/year
Proper Motion RA.-83.35000 ± 0.15000 milliarcseconds/year
B-V Index0.45
Radial Velocity45.80000 ± 0.6 km/s
Iron Abundance (Fe/H)0.3600 ± 9.99
Eccentricity0.21190
Semi-Major Axis6033.0000000
Luminosity (Lsun)23.8100000
Effective Temp. (Kelvin) 4,995

Variable Star Details


Variable Star ClassPulsating
Variable Star TypeDelta Scuti Variable
Mean Variability Period in Days0.141
Variable Magnitude Range2.86 - 2.955

Sources and Links


Modified Date24th July 2024
Published DateJan 2015
SIMBAD SourceLink
SourceVizier,


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