She was noted for her research into the trigonometric parallax of nearby stars.

The least important fundamental distance measurements come from trigonometric parallax.

Based upon measurement of its trigonometric parallax, it is approximately 390 light years from Earth.

During his career he computed more than 200 stellar trigonometric parallaxes.

Also, the method is quite difficult to work with compared with more straightforward methods like trigonometric parallax.

The distance to Beta Pictoris was found by measuring the star's trigonometric parallax.

As the stars of Alpha Centauri approach us, the measured proper motion and trigonometric parallax slowly increase.

This movement implied it was relatively close to the Sun, making it a star of interest for the purpose of trigonometric parallax measurements.

This was done by measuring its trigonometric parallax: the slight displacement in its position observed as the Earth moves around the Sun.

Recent trigonometric parallax results have confirmed this moving cluster distance, leading to a distance estimate of 53 1 parsec or 172 3 light years.

While the method of trigonometric parallax provides accurate distances without underlying astrophysical assumptions, it is limited to distances of less than 500-1000 parsecs by current technology.

VLBI observations of maser sources in late type stars and star forming regions provide determinations of their trigonometric parallax and therefore their distance.

Its proximity to the Solar System was established by the RECONS group in 2006 when its trigonometric parallax was measured.

Scottish astronomer Thomas Henderson made the original discovery from many exacting observations of the trigonometric parallaxes of the AB system between April 1832 and May 1833.

The following relationship between a Population I Cepheid's period and its mean absolute magnitude was established from Hubble Space Telescope trigonometric parallaxes for 10 nearby Cepheids:

Thanx Replies: I know in Astrophysics, there is something called Trigonometric Parallax that alllows you to measure a star's distance, or the angle of separation of a binary.

The General Catalogue of Trigonometric Parallaxes, first published in 1952 and later superseded by the New GCTP (now in its fourth edition), covers nearly 9,000 stars.

Using these relations the distance is calculated to delta Cephei, and compared with an independent distance derived from trigonometric parallax measurements by the Hubble Space Telescope - the two measurements agree to within a few percent.

The proximity of the pulsar to the Earth should make it possible to determine its distance directly through the measurement of annual trigonometric parallax, the apparent shift in the pulsar position due to the motion of the Earth about the Sun.

The reason is that objects bright enough to be recognized and measured at such distances are so rare that few or none are present nearby, so there are too few examples close enough with reliable trigonometric parallax to calibrate the indicator.

If visual doubles show similar properties, such as similar proper motion through space, trigonometric parallaxes, or radial velocities, this is evidence that they are gravitationally attached and form a binary system; in this case, the visual double star is called a visual binary.

In 1917, at the Royal Observatory at the Cape of Good Hope, the Dutch astronomer Joan Voûte measured the star's trigonometric parallax and determined, incorrectly, that Proxima Centauri was the same distance from the Sun as Alpha Centauri.

HW Virginis, abbreviated HW Vir, is an eclipsing binary system (of the Algol type) approximately 590 light-years away (based on the stellar properties and magnitudes: the Hipparcos trigonometric parallax measurement has too high an error value to be useful) in the constellation of Virgo.