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Jacobus Kapteyn
Prof Jacobus Cornelius Kapteyn FRS FRSE LLD (19 January 1851 – 18 June 1922) was a Dutch astronomer. He carried out extensive studies of the Milky Way and was the discoverer of evidence for galactic rotation. Kapteyn was also among the fi ...
- Astronomer
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Parallactic instrument of Kapteyn
The parallactic instrument of Kapteyn is a measuring instrument created by the Dutch astronomer Jacobus Kapteyn around 1886. Using this instrument, Kapteyn analyzed over 1,700 glass plate photos of stars seen from the southern hemisphere.van der ...
- the instrument used by Kapteyn to analyze photographic plates
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Jacobus Kapteyn Telescope
The Jacobus Kapteyn Telescope or JKT is a 1-metre optical telescope named for the Dutch astronomer Jacobus Kapteyn (1851-1922) of the Isaac Newton Group of Telescopes at the Roque de los Muchachos Observatory on La Palma in the Canary Islands, Sp ...
- telescope named after Jacobus Kapteyn
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Kapteyn's Star
Kapteyn's Star is a class M1 red subdwarf about 12.83 light-years from Earth in the southern constellation Pictor; it is the closest halo star to the Solar System. With a magnitude of nearly 9 it is visible through binoculars or a teles ...
- star named after Jacobus Kapteyn
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Kapteyn b
Kapteyn b is an exoplanet that orbits within the habitable zone of the red subdwarf Kapteyn's Star, located approximately from Earth. Kapteyn b is within the estimated habitable zone of its star. It was the closest-suspected potentially habitab ...
- planet around Kapteyn's Star
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Kapteyn c * Jacobus Kapteyn - Astronomer
** Parallactic instrument of Kapteyn - the instrument used by Kapteyn to analyze photographic plates
** Jacobus Kapteyn Telescope - telescope named after Jacobus Kapteyn
** Kapteyn's Star - star named after Jacobus Ka ...
- planet around Kapteyn's Star
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Kapteyn (crater)
Kapteyn is a lunar impact crater that is near the eastern limb of the Moon, to the west of the crater La Pérouse. West of Kapteyn is the slightly smaller Barkla, and farther to the west-northwest is the prominent Langrenus. Von Behring is t ...
- Lunar crater named after Jacobus Kapteyn
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Kapteyn Astronomical Institute
The Kapteyn Astronomical Institute is the department of astronomy of the University of Groningen
The University of Groningen (abbreviated as UG; nl, Rijksuniversiteit Groningen, abbreviated as RUG) is a Public university#Continental Europe, pu ...
- Dutch Astronomical Institute named after Jacobus Kapteyn
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Paul Joan George Kapteyn - Dutch Judge
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