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  2. Orbital inclination - Wikipedia

    en.wikipedia.org/wiki/Orbital_inclination

    Since the word "inclination" is used in exoplanet studies for this line-of-sight inclination, the angle between the planet's orbit and its star's rotational axis is expressed using the term the "spin-orbit angle" or "spin-orbit alignment". [5] In most cases the orientation of the star's rotational axis is unknown.

  3. Exoplanet orbital and physical parameters - Wikipedia

    en.wikipedia.org/wiki/Exoplanet_orbital_and...

    Because the word 'inclination' is used in exoplanet studies for this line-of-sight inclination then the angle between the planet's orbit and the star's rotation must use a different word and is termed the spin–orbit angle or spin–orbit alignment. In most cases the orientation of the star's rotational axis is unknown.

  4. Teegarden's Star b - Wikipedia

    en.wikipedia.org/wiki/Teegarden's_Star_b

    Because of the alignment and faintness of Teegarden's Star, Doppler spectroscopy (also known as the radial velocity method) was necessary to detect possible exoplanets. This method detects exoplanets indirectly by observing their effects on a host star's radial velocity , the speed at which it is moving towards or away from the Earth.

  5. Methods of detecting exoplanets - Wikipedia

    en.wikipedia.org/.../Methods_of_detecting_exoplanets

    The first exoplanet for which transits were observed for HD 209458 b, which was discovered using radial velocity technique. These transits were observed in 1999 by two teams led David Charbonneau and Gregory W. Henry. [19] [20] [21] The first exoplanet to be discovered with the transit method was OGLE-TR-56b in 2002 by the OGLE project. [22 ...

  6. American Astronomical Society 215th meeting - Wikipedia

    en.wikipedia.org/wiki/American_Astronomical...

    The size of Kepler's first five planet discoveries as compared with Jupiter and Earth. NASA's Kepler space telescope has discovered its first five new exoplanets, or planets beyond the Solar System. Kepler's high sensitivity to both small and large planets enabled the discovery of the exoplanets, named Kepler-4b, 5b, 6b, 7b and 8b.

  7. 11 must-see astronomy events in 2025 - AOL

    www.aol.com/11-must-see-astronomy-events...

    For the third time in the year, Venus will be the foundation for a planetary alignment, as it shines with Jupiter and the crescent moon before sunrise on Tuesday, Aug. 19. The trio will be easy to ...

  8. Exoplanet - Wikipedia

    en.wikipedia.org/wiki/Exoplanet

    An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not then recognized as such. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995.

  9. HD 209458 b - Wikipedia

    en.wikipedia.org/wiki/HD_209458_b

    HD 209458 b is an exoplanet that orbits the solar analog HD 209458 in the constellation Pegasus, some 157 light-years (48 parsecs) from the Solar System.The radius of the planet's orbit is 0.047 AU (7.0 million km; 4.4 million mi), or one-eighth the radius of Mercury's orbit (0.39 AU (36 million mi; 58 million km)).