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Astronomy & Space

Additional Jupiter occasions for UK observers in July 2019 – Astronomy Now

July 10, 2019 • By

This beautiful picture of Jupiter with its Nice Purple Spot (GRS) shortly after transit was captured by Christopher Go within the Philippines utilizing a Celestron C14 telescope and QHY 290M digicam on 22 June 2019 at 15:44 UT. Be aware the turbulence within the wake (left) of the GRS and the totally different look of the planet’s most important North and South Equatorial Belts. The GRS is seen in 7.6-cm (3-inch) and bigger telescopes on nights of excellent seeing. North is up and celestial east is to the left. Picture credit score: Christopher Go.

As June attracts to an in depth, largest planet Jupiter is an unmistakable magnitude -2.5 naked-eye object discovered highest within the southern sky of the British Isles near 11:30pm BST. By 13 July, when the planet lies near the 11-day-old Moon, the pair attain their peak altitude due south round 10:45pm BST.

Jupiter’s present location within the southern reaches of the constellation Ophiuchus does imply that the planet will get no larger than 14 levels above the southern horizon for an observer within the coronary heart of the UK, however on nights of calm air with good seeing there are nonetheless wonders to behold with telescopes of apertures as small as 7.6-cm (3-inch) at magnifications of 100× or extra.

Nice Purple Spot
Whereas Jupiter’s Nice Purple Spot (GRS) seems to have briefly ceased its flaking exercise (see this story), observers ought to hold a eager eye on this Earth-sized anticyclonic storm within the Jovian environment.

The desk on the backside of this web page lists the perfect occasions to see the GRS for observers within the British Isles and people components of Western Europe at an analogous longitude (e.g., Spain, Portugal, Central and Western France). For different places worldwide, seek the advice of our interactive on-line Almanac, guaranteeing that the ‘Add phenomena of Jupiter?’ checkbox is ticked.

Jupiter’s moons
The biggest planet at all times has extra to supply than cloud options in its always churning environment. Jupiter is a veritable miniature photo voltaic system in its personal proper, with a household of 79 identified pure satellites. The 4 massive Galilean moons — Io, Europa, Ganymede and Callisto — frequently cross in entrance of (transit), are eclipsed (passing into shadow) or occulted (hidden) by Jupiter.

Because of the present orbital inclination of Callisto to our line of sight, the outermost Galilean moon passes above or beneath Jupiter at conjunction. Observers within the UK can witness this (climate allowing) on Sunday, 14 July at 11:31pm BST when Callisto passes barely lower than 4 arcseconds south of Jupiter. Earlier this night time, don’t miss Io (left) rising from Jupiter’s shadow at 11:19pm BST. AN graphic by Ade Ashford.

Io, Europa and Ganymede show transits, shadow transits (the place their shadows seem as inky black dots drifting throughout Jupiter’s cloud tops), eclipses and occultations all through July, as summarised for the British Isles and comparable longitudes within the desk beneath.

Phenomena of Jupiter and its vivid Galilean moons seen from the British Isles all through July 2019. Be aware that each one occasions are given in British Summer time Time (BST), so subtract one hour to transform to Common Time/GMT. Computation and information preparation: Ade Ashford/Information.

Astronomy & Space

Juno orbiter captures extra gorgeous views of Jupiter – Astronomy Now

June 24, 2019 • By

Throughout its 20th move by Jupiter, NASA’s Juno orbiter captured 4 gorgeous pictures of the large planet that have been compiled right into a close to face-on view, exhibiting its turbulent northern hemisphere in exceptional element. The pictures have been captured on 29 Could at altitudes starting from 18,600 kilometres (11,600 miles) to eight,600 kilometres (5,400 miles) at northern latitudes spanning 59 to 34 levels. Citizen scientist Kevin M. Gill created this picture from knowledge offered by the spacecraft’s JunoCam imager.

Jupiter as imaged by NASA’s Juno spacecraft. Picture: NASA/JPL-Caltech/SwRI/MSSS/Kevin M. Gill

Launched from Cape Canaveral, Florida, in 2011, the solar-powered Juno braked into polar orbit round Jupiter in July 2016. Since then, it has been finding out Jupiter’s ambiance, its magnetic discipline and inside construction in nice element, sending again a gentle stream of knowledge that features pictures captured by the JunoCam instrument. Supposed primarily for public outreach, JunoCam pictures can be found to the general public for processing.

Astronomy & Space

See the waning Moon meet Jupiter and Saturn at daybreak, 27–29 March – Astronomy Now

March 26, 2019 • By

Observers within the British Isles and Western Europe wishing to see the waning Moon meet each Jupiter and Saturn ought to search unobstructed view of the horizon from southeast by south some 45 minutes earlier than dawn from 27–29 March 2019. The Moon occults Saturn as seen from South Africa round nautical daybreak on Friday, 29 March. AN animation by Ade Ashford.

Now that the waning Moon is rising after midnight, deep-sky observers within the UK and Western Europe can rejoice on the return of darkish night skies for looking down all kinds of extragalactic deep-sky objects (some described right here). For lunar and planetary lovers, nevertheless, the one naked-eye planet of the night sky is distant and tiny Mars within the constellation of Taurus. However when you’re ready to be an early riser, the daybreak sky is the place you’ll discover two of the photo voltaic system’s heavyweights, Jupiter and Saturn.

Jupiter, the biggest planet, at present lies in Ophiuchus, the unofficial 13th zodiacal constellation. Presently shining at magnitude -2.2 and due to this fact the brightest object within the daybreak sky apart from the Moon, Jupiter could be discovered low within the southern sky on the onset of civil twilight some 35 minutes earlier than dawn within the UK.

On the morning of Wednesday, 27 March round 5am GMT you will discover Jupiter simply 1½ levels to the decrease proper of the 21-day-old waning gibbous Moon. Therefore the Moon and planet will simply slot in the identical discipline of view of binoculars and telescopes magnifying 30× or much less. In increased magnification devices you’ll see that Jupiter seems to have solely two Galilean moons at the moment – Callisto to the east and Ganymede to the appropriate. (Io is behind Jupiter and Europa is eclipsed by the planet’s shadow).

Two mornings later, it’s magnitude +0.6 Saturn’s flip to get considerably nearer to the waning Moon. If you happen to look very low within the south-southeast at 5am GMT on Friday, 29 March you possibly can see the 23-day-old lunar crescent simply two Moon widths beneath the ringed planet. Saturn’s largest and brightest moon, magnitude +9 Titan, occurs to be near biggest elongation this explicit morning, some 4⅓ ring diameters east of its father or mother planet.

As seen from extra southerly latitudes, particularly South Africa, the Moon truly occults (passes in entrance of) Saturn round nautical daybreak on Friday, 29 March.