On Sunday, 26 May at 21:17 UT, 1 Ceres, the nearest and brightest of the dwarf planets and the largest minor planet inside the orbit of Neptune, passed closest to Earth for this year. At this instant, Ceres was 1.7513 astronomical units, or 262 million kilometres (162.8 million miles) from our planet.
Ceres presently lies in the constellation of Ophiuchus, the Serpent Bearer, but the dwarf planet’s westerly motion relative to the stars carries it into Scorpius on 29 May where it resides until 22 June.Ceres reaches opposition close to 12am BST on 29 May and shines at its peak magnitude of +7.0 for 2019, fading to +7.8 by the end of June, hence it’s a comfortable binocular or small telescope target — if you know exactly where to look. Click here for a printable PDF version of the finder chart at the top of the page.
As viewed from the UK, Ceres is currently highest in the sky close to 1am BST, or by 10:30pm BST at the end of June, when the dwarf planet is just 18 degrees high in the south as seen from the centre of the British Isles.
Ceres is also occulted (hidden) by the Moon on 15 June as seen from Russia (central and east), Kazakhstan (northeast), China (north and east) and Japan.
Three teams of astronomers have made use of SPHERE, an advanced exoplanet-hunting instrument on the Very Large Telescope (VLT) at ESO’s Paranal Observatory, in order to shed light on the enigmatic evolution of fledgling planetary systems. The explosion in the number of known exoplanets in recent years has made the study of them one of the most dynamic fields in modern astronomy.
On the final stretch of a speedy nine-year trek through the solar system, NASA’s New Horizons spacecraft will be awakened from hibernation Dec. 6 for an encounter with Pluto, a mysterious world that has captured imaginations and will soon be revealed in reality.
July opens with Jupiter three weeks after opposition, but the largest planet is still putting on a fine show as an unmistakable magnitude -2.6 object low in the south before midnight in the constellation of Ophiuchus (the Serpent Bearer). With ongoing developments in the Jupiter’s Great Red Spot and plenty of phenomena occurring with the planet’s large Galilean moons, here’s our Jovian observing guide for July 2019.