Sentences with phrase «occultation by»

Meanwhile, astronomers had another chance of observing a stellar occultation by Pluto today, with telescopes at Mauna Kea, Hawaii.

But according to Brazilian physicist Felipe Braga Ribas of the Valongo Observatory in Rio de Janeiro, observations of a stellar occultation by Quaoar on 4 May 2011 indicate a much larger diameter, between 1045 and 1095 kilometers.

Not exact matches

Astronomers using telescopes at seven different locations, including the 1.54 - metre Danish and TRAPPIST telescopes at ESO's La Silla Observatory in Chile [5], were able to watch the star apparently vanish for a few seconds as its light was blocked by Chariklo — an occultation [6].

Schlichting's group found just a single occultation, caused by a KBO approximately one kilometer in diameter, in 4.5 years of observations.

«Physically, what that means is that these objects are weak,» Bianco explains — collisions in the solar system's evolution have ground them down to even smaller bits that elude detection by the occultation surveys.

But even for those occultation surveys, discoveries are tough to come by.

Whereas the lower atmosphere (at altitudes of less than 200 kilometers) is consistent with ground - based stellar occultations, the upper atmosphere is much colder and more compact than indicated by pre-encounter models.

These glitches are apparent from astronomical observations of occultations of stars by the moon — miniature eclipses that occur when the moon passes in front of the distant star.

Then word came that the occultation had been witnessed by two more telescopes some 740 km to the north.

An instrument called GOMOS — Global Ozone Monitoring by Occultation of Star — will look at a star through the atmosphere and measure how much of its light is absorbed by ozone.

That is likely a reference to companies like Spire Global, which has launched a series of CubeSats to collect weather data by GPS radio occultation.

A preview of 2014 MU69 revealed by HST and a ground - based stellar occultation.

The two moons are shown to be strongly elongated, and composed of two lobes, as suggested by the recently observed occultation data by the moon Romulus.

Electron densities measured by radio - occultations (Pätzold et al. 2007) allow one to derive the overall structure of the ionosphere.

The observations taken during the occultation also gave more accurate details of the dwarf planet's size, showing it to be an oblate spheroid measuring 1,430 km by 1,500 km, making it about two - thirds the size of Pluto.

This event followed an occultation of the star by Saturn and the rings which was well observed from the Americas and we have been cooperating with the BAA Saturn Section over the collection of data for the events.

«This new planetary system presents various peculiarities which make it extraordinarily interesting, e.g., it was detected by the Kepler spatial observatory through the planetary transit method (occultations similar to eclipses)», Barrado details.

In turn, this opens up the possibility that some of the out - of - eclipse variability could be due to occultations of the central stars by material located at the inner edge or in the central cavity of the circumbinary disk.

On this date the occultation of 28 Sgr by Titan was observable from Europe.

However, for a short time at the start and end of the occultation, Pluto's atmosphere was backlit by the star, and the starlight dimmed more gradually.

Occultation predictions are circulated monthly by Assistant Director

Other major meetings attended by section officers were the EUROPLANET N3 Strategic Workshop «Stellar Occultation Studies» in Paris and Meeting on Asteroids and Comets in

On November 6, 2010, three teams of astronomers using three different telescopes tracking the occultation of a 17th - magnitude star in the north - central part of Constellation Cetus by Eris revealed preliminary results indicating that the dwarf planet may be smaller in diameter than Pluto after all, based on the unexpectedly short times of occultation reported.

Of course, openness is relative — there's still plenty of myth and symbolism to sift through — but the occultation is in direct dialogue with the regime set in place by Thailand's military dictatorship.