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.
Blazing with the light of 60,000 suns, it is the farthest first -
magnitude star in the heavens, a lighthouse of the galaxy.
Not exact matches
Saturn and Mars are easily as brilliant as 1st -
magnitude stars, so you should have no trouble seeing them
in the moon's glare.
Morningstar mutual funds rating provides an up - to - date quantitative evaluation of over one thousand three hundred open - end mutual funds» past performance, both
in terms of risk and return, using a
magnitude of one to five
stars.
Farmiga, who
starred opposite George Clooney
in the hit movie «Up
in the Air,» told CNN that she began panicking during preproduction, as the
magnitude of the undertaking - simultaneously directing and playing the lead role, lots of child actors, and 25 scenes that included music - became clear.
Or perhaps the kind of immortality Goethe allowed to his friend Wieland, when he said
in his conversation with Falk: «I would not be at all surprised if I met Wieland again some thousands of years hence as a
star of the first
magnitude..., and saw with my own eyes how he infused everything around him with a pleasant light.»
«We have carefully examined the early data of the Subaru Strategic Survey with HSC and found an apparent over density of
stars in Virgo with very high statistical significance, showing a characteristic pattern of an ancient stellar system
in the color -
magnitude diagram,» he said.
The standard method for doing this is to look for a characteristic distribution of
stars in the color -
magnitude diagram (comparable to the Hertzsprung - Russell diagram.
In 1781, British astronomer William Herschel was trying to catalog all the
stars magnitude -8 or brighter.
The
stars in the Big Dipper are second
magnitude and the
stars in Cassiopeia are also second
magnitude, so they're bright, but they're not amazingly bright.
This results
in the accumulation of precise mutations (
stars in green cells) as a function of the
magnitude and duration of exposure to the input.
This factor is estimated from the counts of faint
stars in the CoRoT fields (Fig. 7
in Deleuil et al. 2009), comparing them at the dominant
magnitude for both contaminants
in CoRoT and the sample analyzed by Brown.
These
magnitudes provide colour indices implying an M2 - M5 donor
star assuming 60 % contribution from a disc component
in the r» - band.
This map is a plot of every
star in the Hipparcos catalog with an absolute
magnitude brighter than -0.5 within 2000 light years.
The internal structures of giant planets are much less well known than those of main - sequence
stars because of uncertainties
in the equation of state of degenerate gas, the composition (typically non-solar), the interaction with the magnetic field and,
in the upper layers, the relative
magnitudes of internal heat and energy deposited from the sun.
This zero -
magnitude star is visible with the naked eye as the third brightest
star after Sirius A and Arcturus
in Earth's northern skies, and is fifth brightest
star overall.
Our measurements result
in an outburst amplitude greater than 4.3
magnitudes, which favours an orbital period < 21 h and a companion
star with a spectral type later than ~ A0.
Kappa Lyrae, Latinized from κ Lyrae, is a solitary 4th
magnitude star approximately 238 light years away from Earth,
in the northern constellation of Lyra.
These
stars vary
in magnitude at regular intervals, giving them a pulsating appearance.
A key indicator of this energy distribution is given by the color index, B — V, which measures the
star's
magnitude in blue (B) and green - yellow (V) light by means of filters.
Thus, this difference
in magnitude provides a measure of a
star's temperature.
Such a
star is predicted to have a crystalline solid crust, wherein bare atomic nuclei would be held
in a lattice of rigidity and strength some 18 orders of
magnitude greater than that of steel.
Main sequence
stars in this region experience only small changes
in magnitude and so this variation is difficult to detect.
English explorer Robert Hues brought Alpha Centauri to the attention of European observers
in his 1592 work Tractatus de Globis, along with Canopus and Achernar, noting «Now, therefore, there are but three
Stars of the first
magnitude that I could perceive
in all those parts which are never seene here
in England.
We marginally confirm the existence of an offset between the disk center and the
star along the line of nodes; however, the
magnitude of this offset (x = 27 -LSB--20, +19] mas) is notably lower than that found
in our earlier H - band images (Thalmann et al. 2010).
Listed as V645 Cen
in the General Catalogue of Variable
Stars (G.C.V.S.) Version 4.2, this UV Ceti - type flare
star can unexpectedly brighten rapidly by as much as 0.6
magnitudes at visual wavelengths, then fade after only a few minutes.
He found 149 member
stars within 27.2», with the following distribution
in magnitudes:
The Sun would be a yellow
star of an apparent visual
magnitude of +0.5
in eastern Cassiopeia, at the antipodal point of Alpha Centauri's current right ascension and declination, at 02h 39m 35s +60 ° 50 ′ (2000).
When considered among the individual brightest
stars in the sky (excluding the Sun), Alpha Centauri A is the fourth brightest at an apparent visual
magnitude of +0.01, being fractionally fainter than Arcturus at an apparent visual
magnitude of − 0.04.
We find that a single, relatively simple model is consistent with all the available observational constraints spanning 4 orders of
magnitude in wavelength and spatial scales, providing strong support for this interpretation of UX Orionis
stars.
According to this page, there are planned observations
in a special mode for
stars with Gaia
magnitudes less than 3 (which would include Alpha Centauri), but it remains to be seen what kind of accuracy can be achieved.
This second
magnitude star is the 24th brightest (and the brightest red giant)
in Earth's night sky.
The
magnitude of the shift
in the starlight's wavelength — on the order of quadrillionths of a meter — together with the period of the wobble can be used to determine an exoplanet's mass and orbital distance from its
star.
Vega, also called Alpha Lyrae, brightest
star in the northern constellation Lyra and fifth brightest
in the night sky, with a visual
magnitude of 0.03.
The dilution of the host
star's light by the nearly equal
magnitude stellar companion (~ 0.5
magnitudes fainter) significantly affects the derived planetary parameters, and if left uncorrected, leads to an underestimate of the radius and mass of the planet by 10 %... ▽ More We present the discovery of a hot Jupiter transiting an F
star in a close visual (0.3» sky projected angular separation) binary system.
The nebula is variable
in brightness because the
star varies
in brightness between
magnitudes 9.3 and 14.0.
Denebola has been classed as a Delta Scuti - type variable
star (which vary
in brightness by small amounts over periods lasting only hours and including radial as well as non-radial pulsations) as it exhibits small, Delta Sculti - type variability with around a 2.09 to 2.16 visual
magnitude difference —
in V on UBV Johnson system (Mkrtichian and Yurkov, 1998).
We are also able to determine the oscillation amplitudes for
stars that span about two orders of
magnitude in luminosity and find good agreement with the prediction that oscillation amplitudes scale as the luminosity to the power of 0.7.
«The angular momentum that resides
in typical interstellar clouds is many orders of
magnitude higher than the angular momentum we compute for the relatively slowly spinning young
stars; where and how has the protostar shed that angular momentum during contraction?
Lastly, we distinguish between red giant branch and red clump
stars through the measurement of the period spacing of mixed dipole modes
in 53
stars among all the three clusters to verify the stellar classification from the color -
magnitude diagram.
In the centre shines a lonely
star of the 8th
magnitude.
The
star appears to have a dim optical stellar companion, possibly a red dwarf of 13th
magnitude that is seen
in telescopes but is probably not actually bound by gravity to Tau Ceti itself.
For instance, two second -
magnitude stars, Alpha Pavonis and Epsilon Carinae, were assigned the proper names Peacock and Avior respectively
in 1937 by Her Majesty's Nautical Almanac Office during the creation of The Air Almanac, a navigational almanac for the Royal Air Force.
It was really fun and illuminating for me to participate
in all the nights, to watch how the instrument behaved according to the
magnitude of the
stars.
The cluster is 15 ′;
in diameter and contains 120
stars, but
in an 8 - inch telescope you can only see about 10 to 12
stars of the 12th and 13th
magnitude.
I centred the finder - scope
in a sort of trapezoid, formed by four
stars (
magnitude 6 to 7).
According to a University of Wisconsin's Niagra Query Engine entry, LDS 846 was announced as a possible companion by George A. Van Biesbroeck (1880 - 1974) at the Victoria Double
Star Conference
in 1956 (16th
magnitude, red, 1130» distant
in 67 degrees and included as Gamma Leporis C
in Luyten's LTT catalogue as LTT 2368).
Located
in a South Polar region of the sky that lacks bright
stars above 5th
magnitude and other interesting objects, Constellation Mensa was named by the Abbé [Abbot] Nicholas Louis de La Caille (1713 - 1762).
This is so narrow, just a few foreground
stars in our Milky Way galaxy are visible and are vastly outnumbered by the menagerie of far more distant galaxies, some nearly as faint as 30th
magnitude, or nearly four billion times fainter than the limits of human vision.
The brightest
stars in the cluster shine at
magnitude 15.