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.