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Kepler-1 (Variable Star) Facts

Kepler-1 Facts

Kepler-1's Alternative Names

Kepler-1 has alternative name(s) :- KOI-1.

The Kepler name comes from the fact that the star was examined as part of the N.A.S.A. Kepler Space Telescope. The telescope operated between March 2009 and October 2018 studying a small section of space for exoplanets around the constellations of Cygnus, Draco and Lyra. After the telescope project came to an end, studies continued with T.E.S.S. space telescope which examined the majority of space for planets.

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

Location of Kepler-1

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 Kepler-1, the location is 19 07 14.0379171930 and +49 18 59.090895318 .

Radial Velocity and Proper Motion of Kepler-1

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 1.62 miliarcseconds/year towards the north and 5.22 miliarcseconds/year east if we saw them in the horizon.

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is -0.73 km/s . 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.

Physical Properties (Colour, Age, Mass, Radius) of Kepler-1

Kepler-1 has a spectral type of G0V+K4.5-6 C. This means the star is a white to yellow main sequence star.

Kepler-1 has been calculated as 1.00 times bigger than the Sun.The Sun's radius is 695,800km, therefore the star's radius is an estimated 695,800.00.km. If you need the diameter of the star, you just need to multiple the radius by 2. The star's solar mass is 0.98 times that of the Sun's. The Sun's Mass is 1,989,100,000,000,000,000,000 billion kg. which to calculate using this website is too large. To give idea of size, the Sun is 99.86% the mass of the solar system.

The star is believed to be about 5.10 Billion years old. To put in context, the Sun is believed to be about five billion years old and the Universe is about 13.8 billion years old.

Distance to Kepler-1

The Parallax of the star is given as 4.62 which gives a calculated distance to Kepler-1 of 706.68 light years from the Earth or 216.67 parsecs. It would take a spaceship travelling at the speed of light, 706.68 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

The star is roughly 44,691,084.16 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.

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Additional Kepler-1 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameKepler-1
Alternative NamesKOI-1
Spectral TypeG0V+K4.5-6 C
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star Type main sequence Dwarf Star
ColourWhite to Yellow
GalaxyMilky Way
Age5.10 Billion Years Old
Right Ascension (R.A.)19 07 14.0379171930
Declination (Dec.)+49 18 59.090895318
Distance from Earth4.62 Parallax (milliarcseconds)
 706.68 Light Years
 216.67 Parsecs
 44,691,084.16 Astronomical Units
Proper Motion Dec.1.62 milliarcseconds/year
Proper Motion RA.5.22 milliarcseconds/year
Radial Velocity-0.73 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Calculated Facts

Radius (x the Sun)1.00
Mass Compared to the Sun0.98

Sources and Links


List of Extrasolar Planets orbiting Kepler-1

NameStatusMass (Jupiters)Orbital Period (Days)EccentricityDiscoveredSemi-Major AxisPeriastronInclination
Kepler-1 bConfirmed1.2530200683.908

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