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HIPPARCOSHigh Precision Parallax Collecting Satellite
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It is estimated by the researchers that the cluster is 443 light-years away by using radio telescopes and is at odds with the measurements taken through the Hipparcos that shows the distance as 390 light-years.
Further, I obtained access to the photometry of all of the stars observed by Hipparcos [2].
Harper and other astronomers used radio telescopes to track the star for many more years than Hipparcos did.
As part of the calibration effort for the WIRE satellite, investigation of the Hipparcos database allowed stars of any given spectral type to be separated for magnitudes as faint as V=12.
Hipparcos 24186 is perhaps better known as Kapteyn's Star, a lovely, ruddy-hued type M1 magnitude 8.
The new age estimate comes from new Hubble observations that pinned Methuselah's distance from Earth more precisely than previous estimates from the European Space Agency's Hipparcos satellite.
In the 1990s, the European Space Agency's star-mapping Hipparcos satellite determined the 434 light-year distance to Polaris, while other studies suggested the star could be closer to the sun.
0 but when the light estimates are re-reduced using modern Hipparcos photometry for the comparison stars, the actual average maximum recorded was 1.
However, the recent Hipparcos satellite results (Chaboyer et al.
To track the motion of nearby stars as they move across the sky, Benoit Famaey of the Free University of Brussels in Belgium and his collaborators used data from the European Space Agency's Hipparcos satellite, which ended its mission in 1993.
The availability of photometry from the Hipparcos satellite presents the opportunity to utilize a homogenous data set to calculate the Fourier parameters.
The astrometric satellite Hipparcos has revolutionised this field and there are great expectations for Gaia, scheduled for launch in October 2013.