... Comet Hyakutake's Closest Approach . ... Comet Hyakutake's Past and Future . ... The above false-color picture of Comet Hyakutake taken just two days ago shows its rapidly developing tail. The comet now has a substantial coma with a bright center, lending it a dramatic eye-like appearance. ... Near Comet Hyakutake's Nucleus . ... This March 19th false-color picture of Comet Hyakutake from one of the most sophisticated ground based telescopes captures the area surrounding the comet's nucleus. ...

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... March 24, 1996 . Comet Hyakutake's Closest Approach . ... Explanation: The above true color image of Comet Hyakutake was taken the night of March 21/22. Tonight, Comet Hyakutake will make its nearest approach to Earth, closing to a mere 10 million miles as it passes over the planet's Northern Hemisphere . ... For the rest of March and most of April Comet Hyakutake will be visible to Northern viewers (weather permitting). ... Comet Hyakutake Finder Chart . ... About APOD | ...

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• APOD: 2007 May 23 - Venus Near the Moon
• APOD: March 22, 1996 - Where to See Comet Hyakutake
• APOD Index - Solar System: Comets: Hyakutake

On January 23, 1998 the space probe NEAR was on its way to its closest approach to Earth. Shortly before this, a so-called sunglint event was scheduled: by re-orienting its solar panels in order to reflect sunlight onto Earth's surface, the probe would shine for a few minutes brighter than any star in the sky. ... However, we were able to record a series of images of the space probe shortly before the sunglint event, and we have assembled them into a movie. ...

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• NEAR recorded on 23 January 1998(frame 1)
• Comet Shoemaker-Levy 9
• Asteroid Mathilde

... Figure 8: Can you detect the motion of the near-Earth asteroid 2000PH against the background stars during its close approach to Earth around 27 July 2004? ... Down) observed and imaged the unusual near-Earth asteroid 2000PH during its close approach to the Earth around 27 July 2004. The observations were carried out remotely using the new 2m aperture Faulkes telescope situated on the 10,000-foot summit of Haleakala, on the island of Maui in Hawaii. ...

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• Impact Hazard
• Armagh Observatory
• Terry Mosely's Bulletins

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. ...

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• Rapid Changes in the Inner Coma of Comet Hyakutake
• Infrared/visible crossfade of the Monoceros R2 star-forming region | ESO

... 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 . ...

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• Source near to an image edge. (Bit 7)

. This false-color mosaic shows the entire hemisphere of Iapetus visible from Cassini on the outbound leg of its encounter with the two-toned moon in September 2007. Also shown here is the complicated transition region between the dark leading and bright trailing hemispheres. This region, visible along the right side of the image, was observed in many of the images acquired by Cassini near closest approach during the encounter. NASA/JPL/Space Science Institute

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• Bright planets meet at dusk | Astronomy.com

... Its perihelion would occur on April 1, 1997, at which point the comet would be only 0.92 astronomical units from the Sun, just within the orbit of Earth. ... Taken in April 1993, the photo showed the comet over 13 astronomical units from the Sun, well beyond the orbit of Saturn. ... Hale, as in Comet Hale-Bopp, has written a book, Everybody's Comet (available through the ASP Catalog) and coordinated an Internet project, "Hale-Bopp: Live in the American Classroom." ... Anatomy of a comet. ...

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• ASP: A Special Issue on Halley's Comet
• ASP: The Nearest Stars: A Guided Tour
• ASP: The Comet About to Smash into Jupiter

... Comet Animation . ... Comet structures are diverse and very dynamic, but they all develop a surrounding cloud of diffuse material, called a coma, that usually grows in size and brightness as the comet approaches the Sun. ... As comets approach the Sun they develop enormous tails of luminous material that extend for millions of kilometers from the head, away from the Sun. ... The evaporated molecules boil off and carry small solid particles with them, forming the comet's coma of gas and dust. ...

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• Comet Shoemaker-Levy 9
• The Sun
• SIMP > physical > vortices > ers0205130118

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! ...

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This service is intended as an aid to visually observing close-approaching asteroids. ... By clicking on the column headers for "Object Name", "Maximum Brightness", and "Maximum Angular Speed", you can sort the list by those fields. ... When This is the predicted time when the asteroid will be closest to the Earth. ... This field shows red if an asteroid comes as close as the moon. ... PHA (Potentially Hazardous Asteroid) This does NOT mean that this is going to hit the Earth. ...

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• Period Criteria

... Bad Astronomy . ... Bitesize Astronomy . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... When Venus is on the far side of the Sun, we see the entire near side lit by the Sun. ... When it is on the near side of the Sun, it shows a beautiful thin crescent, because it is between us and the Sun and we see the mostly unlit dark half. ... To see this for yourself, draw a circle one centimeter across, then, next to it, draw a circle 6 centimeters across. ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Bad News:
• Phil Plait's Bad Astronomy: Misconceptions
• Phil Plait's Bad Astronomy: Mad Science

ESO PR 06/96; 16 February 1996 . ... In the early morning of January 31, 1996, Japanese amateur astronomer Yuji Hyakutake made his second comet discovery within five weeks. ... Information about some earlier comet encounters may be found in the Appendix at the end of this Press Release. ... By a straightforward extrapolation of the current brightness, it would appear that Comet Hyakutake will reach magnitude 1 on March 25, 1996, at the time of the closest approach to the Earth. ...

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• Galaxy Gallery Page II
• Low Surface Brightness Galaxy Gallery

Astronotes Armagh Planetarium's Stellar Blog! ... Earth Satellites . ... Monthly Sky Notes . ... By admin March 5, 2013 Posted in: March , Monthly Sky Notes . ... It has been a hard object not to spot due to its intense brightness in the constellation of Taurus following the beautiful bright star Aldebaran across the sky, and although Jupiter has been mentioned a lot recently in the night sky Astronotes this month will provide a particularly exciting view of the solar system record breaker. ...

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• A Summer Night?s Stargazing | Astronotes
• Comet Lovejoy is on the Way | Astronotes
• Kepler 36b and c: Too Close for Comfort | Astronotes

... Our Sun is part of a huge wheel-shaped collection of stars. ... Astronomers have long suspected it was a very massive black hole, and that every galaxy had such a central mass, created early in the history of the universe. ... However, unless that object happens to be headed directly at the black hole (a relatively small target) it will just swing around and fly away again, like a comet making a pass at the Sun. The velocity acquired in falling towards the black hole also helps it escape. ...

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• Close-up of the Aurora
• The Brightest Moon
• The Sun

. Pulkovo NEO Page . Central Astronomical Observatory at Pulkovo . of Russian Academy of Sciences, St.-Petersburg, Russia . Apparent Close Approaches of Near-Earth Asteroids to the Stars for April 2016 . By these observations it is possible to obtain the positions of asteroids with higher accuracy. This page includes the ephemerides of such phenomena for some observatories, namely: . Pulkovo . CrAO . Kourovskaya . Majdanak . Pulkovo Obs. Mountain Station . Mondy .

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• Pulkovo NEO Page: Apparent close Approaches to the Stars

Two major reasons: the number of stars isn't really seven (it's many more), and they all have different brightnesses, so that you see more or fewer of them depending on viewing conditions. The brightness of stars is measured on the magnitude scale, where the most prominent stars in the sky are around 1st magnitude, and the faintest you can see with your eye are about 6th. ... I think this makes it quite likely that the list will be truncated at Taygeta, giving six visible stars. ...

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• Asteroid 1998 ML14 1998 Aug 14-17
• Radar Images of asteroid 1998 ML14
• Solar System Studies at AO

Check out the new images (Jan 18-25) and (Jan 26-Feb 05) of the comet by Rob McNaught. ... Every few years a comet becomes bright enough to be easily seen with the naked eye but only every decade or so are these comparable with comets like Halley. ... Before Jan 13, the comet is not visible in the Australian sky after sunset. ... SOHO images . ... On Jan 12 at approximately 09:00 UT (8pm NSW time), comet C/2006 P1 McNaught appears at the 11 o'clock position in the images. ... STEREO images . ...

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• Mars with south polar ice cap at top
• Siding Spring Survey

... The concerns here are similar to those for observing bright targets; saturation and blooming of the bright companion PSF must not impact the faint target. Also, one may need to consider subtracting the PSF of the bright object, and effects which limit the accuracy of that subtraction. If the bright companion will saturate and bloom, it will be necessary to rotate the CCD so that blooming along the CCD columns does not obliterate the faint target. ...

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• Noise Amplification
• Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for
• WFPC2 Instrument Handbook Update

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

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