TrES-1

Planetary system · 520.7 light-years away

TrES-1 is 521 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this K0 V star; the first was found in 2004 by transit (TrES).

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Worth knowing

TrES-1 b goes round its star every 3.03 days, 29 times as often as Mercury goes round the Sun.

TrES-1 is one of 2 stars in its system. The position of the other star is not catalogued, so only TrES-1 and its planets are drawn.

The star

Spectral typeK0 V
Surface temperature5,230 K
Mass1.04 solar masses
Radius0.85 solar radii
Luminosity0.5004 times the Sun
Apparent magnitude11.424
Ageabout 3.7 billion years
Distance from the Sun520.7 light-years (159.7 parsecs)
Position (J2000)RA 286.0409°, Dec 36.6325°
ConstellationLyra

Planets (1)

PlanetYearOrbitRadiusMassFound
TrES-1 b3.03 days0.0393 AU12.666 R⊕266.98 M⊕Transit, 2004

Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.

Sources

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