... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . Armagh Observatory, 11 June 2015: Armagh Observatory reports that the next two weeks will provide an interesting opportunity to observe the brightest planet, Venus, and the largest planet, Jupiter, as they move towards one another in the evening twilight. ... The image shows the sky view towards the West at around 11pm on 20 June 2015. ... Professor Mark E. Bailey, Armagh Observatory, College Hill, Armagh BT61 9DG. ...

I was wondering what conditions should be met to have the "darkest" sky .. ... Upon the above publication of the Southern Galactic hemisphere, TunГ Tezel started seeking opportunities to create the Northern counterpart image. ... So, the initial quest of having the darkest possible sky have delivered us these two all-sky images of the two galactic hemispheres as seen from Planet Earth. Zoomable and 'full-screenable' fisheye view of the "darkest sky" Southern Galactic Hemisphere image. ...

... Explanation: This planet is only 16 light years away -- could it harbor life? ... An interesting coincidence, however, is that Gliese 832c receives just about the same average energy from its parent star as does the Earth. ... If Gliese 832c has an atmosphere like Earth, it may be a super-Earth undergoing strong seasons but capable of supporting life. ... The close 16-light year distance makes the Gliese 832 planetary system currently the nearest to Earth that could potentially support life. ...

... 2004 March 22 . Asteroid 2004 FH Whizzes By . ... Explanation: Last week, a small asteroid approached unusually close to the Earth. ... Passing only 7 Earth radii away, this asteroid pass was the closest yet that was previously predicted, although it was discovered only two days before. Pictured above, the 30-meter sized 2004 FH was imaged from Switzerland crossing the sky on March 18, near its closest approach. ... An asteroid this size passes this close to Earth about every two years. ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... ASP Conference Series . ... Accidental Astrophysics: The Devil's In the Magnitudes, Part II . ... The star second to the Sun in brilliance is Sirius. ... Recall the magnitude system, passed down to us through a hundred generations of sky watchers, as a means of quantifying stellar brightness ("Accidental Astrophysics," May/June, p. 9). ... Yes, it is a magnitude difference, but that difference is due to the distance between us and the star. ...

... Meta Index / Home Page / Source Flagging Algorithms Any source either having a raw count-rate >= 80, or with quality flag bit 4 set (mod-8 pattern) is checked for "close" neighbours, which may be flagged. ... Check each source in the vicinity of the bright source . ... Compute the maximum distance for flagging the source from maxRad = max(exclusionradius, min(70.0, 35.0 * countTable(i) // 80.0) ) If the flagging is done by omdetect, the exclusion radius is determined from the algorithm at the end . ...

... Planets . ... Earth Satellites . ... Looking in the direction of the constellation Cygnus the Swan and launched by NASA in 2009 is the Kepler Space Observatory.Many previous missions searching for exoplanets mainly detected large giant planets, like large hot Jupiters (it is easier to detect larger planets).However KeplerтАЩs main objective is to search for much smaller planets located in a habitable zone which is not too close nor too far from their star; planets which may be just like our Earth. ...

In this gallery are many images of Low Surface Brightness Galaxies which have recently been discovered and analyzed. ... The central surface brightness of this galaxy is 24.28 . Malin 2 This galaxy is another huge disk galaxy with a scale length of 15 kpc and a redshift of 15000 km/a. The high surface brightness knot in one of its spiral arms actually has the same color, luminosity and H-alpha equivalent width as the entire Large Magellanic Cloud . ... Truly it is a Low Surface Brightness Galaxy. ...

... Since moonshine is really reflected sunlight, the full Moon is on the average slightly brighter in mid-winter, when Earth is closest to the Sun. In addition, the distance of the full Moon also varies, due to the ellipticity ("eccentricity") of the Moon's orbit. On 22 December, 1999, the two effects combined to produce the brightest full Moon of the century. ... This year will be the first full moon to occur on the winter solstice, Dec. 22nd, commonly called the first day of winter. ...

... 8, ``Celestial Mechanics'', 2002 CCD observations of planetary satellites and occultations and close approachments of stars by asteroids with 26­ inch refractor of Pulkovo observatory T. P. Kiseleva, I. S. Izmailov, M. A. Mozhaev Pulkovo Observatory, St. Petersburg, Russia ST--6 CCD camera has been used with 26-- inch Refractor at Pulkovo for ob­ servations of ... These estimates are \Sigma0:015 arcsec and \Sigma0:014 arcsec for X and Y correspondingly. ...

Pulkovo NEO Page . Central Astronomical Observatory at Pulkovo . ... Pulkovo Names of Asteroids . ... The list of Potentially Hazardous asteroids for the Earth with minimum interorbital distance D less than 0.05 AU and absolute magnitude H not more than 22.0. The osculating orbital elements of Potentially Hazardous Asteroids. These elements are adopted from the MPCORB catalog ( http://www.minorplanetcenter.org/iau/MPCORB.html ). ...

КОСМИЧЕСКИЙ КАЛЕНДАРЬ ЯНВАРЯ 2000 ГОДА . ... Jan 01 - Year 2000 . Jan ?? ... Jan 01 - Asteroid 1996 AX1 Closest Approach To Earth (0.702 AU) . ... Jan 03 - Asteroid 3745 Petaev Closest Approach To Earth (1.862 AU) . ... Jan 05 - Asteroid 1999 VO11 Near-Earth Flyby (0.218 AU) . ... Jan 08 - Comet P/1998 VS24 (LINEAR) Closest Approach To Earth (2.915 AU) . ... Jan 12 -[Image][Dec 02] Asteroid 1999 WA2 Closest Approach To Earth (1.100 AU) . ... Jan 14 - Mercury Occults 53 Sgr (6.9 Magnitude Star) . ...

Physical conditions of the interstellar medium in galaxies are closely linked to the ambient radiation field and the heating of dust grains. ... The KINGFISH profiles are well suited to examining trends of dust temperature Tdust and нІ because they span a factor of ~200 in the ISRF intensity heating the bulk of the dust mass, Umin. Results from fitting the profile SEDs suggest that, on average, Tdust, dust optical depth о„dust, and Umin decrease with radius. ...

Galileo false-color image of asteroid 243 Ida and its small satellite Dactyl (at right). ... Central Latitude/Longitude (deg): -20., ... Instrument: Solid State Imaging CCD Camera . ... Instrument Field of View (deg): .46 x .46 . ... Illumination Incidence Angle (deg): 13. Phase Angle (deg): 27. ... Surface Emission Angle (deg): 34. ... NASA Image ID number: P-44131 . ... Code 633, NASA Goddard Space Flight Center . Greenbelt, MD 20771, USA . ... Code 630, NASA Goddard Space Flight Center . ...

Next: Using the sky Up: Reductions --- at Previous: Subtraction of dark . For the user interested in the details of the methods used, here are the actual algorithms used in selecting the ``nearest'' sky, and in the sky-brightness model: . ... This brings us to the sky model. ... An example of data that extend to large enough airmass to determine all four parameters is the dark-sky brightness table published by Walker [ 25 ], which were used by Garstang to check his models. ...

... R2380 Date Received: 2007-Dec-27 13:48:17 Technical Page Proposal Type: General Category: Observation Category: Total Time Requested: Minimum Useful Time: Prop osal Title: ABSTRACT: Urgent Planetary Radar Solar System 24 Hours Transmit window plus one hour. Radar Imaging of the Very Closely Approaching Asteroid 2007 TU24 We propose radar imaging of the newly discovered asteroid 2007 TU24 on Jan 27 and 28 and Feb. ...

MAIN PAGE . ... Nova Cygni August 1975! ... 1975/76: Comet West! ... Dr. Richard West (4th from left) & AAL members visiting SES Betzdorf on occasion of our club's 25th anniversary - October 1996 . Comet West Information . ... It was the brightest comet visible from Earth since Comet West in 1976. ... 1997: Comet Hale-Bopp! ... Thus Comet Hale-Bopp never got closer to Earth than Earth gets to the Sun. ... Comet Hale-Bopp JPL Page . ... 1999: Total solar eclipse over Luxembourg! ...

... Bad Astronomy . ... Bitesize Astronomy . ... I always like it when I can mix the Bad and Bitesize astronomy into one topic. ... There is an email circulating the 'net about the full moon that will happen at 17:00 Universal Time December 22 nd of 1999. ... It says that the full moon which occurs on December 22 is also happening when the Moon is at perigee , or closest approach to the Earth. ... This small difference doesn't add up to much change in the brightness of the Moon though.] ...

... Comet Tutorial . ... On July 1, 1993 an image was taken with the Hubble Space Telescope (HST) that clearly shows at least 15 individual fragments in one image frame of the train. ... This made an accurate orbit (or orbits) difficult to determine; however, after numerous observations of the comet, astronmers determined that the comet had passed within 96,000 kilometers (60,000 miles) of the center of Jupiter or 25,000 kilometers (16,000 miles) from the cloud tops during the July 8, 1992, approach. ...

... In this universe, redshift depends on galaxy temperature, as can be seen from the spectra of bright galaxies. ... Here are those spectra. Galaxy W21 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 300 400 500 Flux Galaxy W43 Wavelength (nm) 600 700 2.5 Wavelength (nm) 2 1.5 1 0.5 0 300 400 500 Flux 600 700 Galaxy W77 25 Wavelength (nm) 20 15 10 5 0 300 400 500 Flux Galaxy W101 600 700 0.16 0.14 0.12 0.1 0.08 0.06 0.04 0.02 0 300 400 500 Flux 600 700 Wavelength (nm) Weminimi Telescope National Facility. ...