Subtract four hours from UT to get EDT, five hours for CDT, six for MDT, and seven for PDT.Ģ3:28 UT, Callisto enters occultation behind Jupiter.Ġ3:44 UT, Io enters occultation behind Jupiter.Ġ4:00 UT, Europa begins transit of Jupiter.Ġ4:46 UT, Ganymede begins transit of Jupiter.Ġ4:56 UT, Europa's shadow begins to cross Jupiter.Ġ6:32 UT, Io exits eclipse by Jupiter's shadow.Ġ6:46 UT, Ganymede's shadow begins to cross Jupiter.Ġ6:50 UT, Europa ends transit of Jupiter.Ġ7:50 UT, Europa's shadow leaves Jupiter's disk.Ġ8:24 UT, Ganymede ends transit of Jupiter.Ġ8:44 UT, Callisto exits eclipse by Jupiter's shadow.ġ0:24 UT, Ganymede's shadow leaves Jupiter's disk. Instead, they fade out and back in over a period of several minutes. Jupiter's moons have substantial disks, so they don't wink off and on as stars do when a planet passes in front of them. The rings of Saturn should be visible in even the smallest telescope at 25x. The two sets of times are slightly different due to calculational complexities, but the discrepancy is nearly irrelevant in practice. Launch Sky & Telescope 's interactive tool for observing Jupiter's moons Turn your telescope to Jupiter and you'll easily pick out its 'stars', the dots of light from the four big Galilean moons that orbit the king of planets. The image pair on the right suggest how the ringed planet might look through a small telescope on a mediocre night (top) and through a larger, better telescope on a night when the air is especially still (bottom). You can also get it spelled out by our online Javascript Utility, as shown below. Most experienced Jupiter observers are used to reading the "phenomena of Jupiter's satellites" in compressed tabular form. Most of the 11-hour sequence should be visible from the American East Coast, and much of it is visible across all of the Americas and in Europe. To enjoy the event to the fullest, you should try to watch the moons' disappearances and reappearances. But the shadows are pitch black, so they stand out relatively well. The moons themselves are hard to see because they're similar in color and brightness to Jupiter. And for most of that time, one or both of the moons' shadows will also fall on Jupiter. But Europe and Ganymede will be in front of the planet, where their disks should (at least in theory) be visible at high magnification if the atmosphere is very steady. You’ll likely need 100x magnification to see the Shadow Transit, however.As the diagram at right shows, Callisto and Io will be either behind Jupiter or eclipsed by Jupiter's shadow, rendering them completely invisible to any telescope. Just give your eyes time to adjust and avoid bright artificial light interference. Binoculars 7x or higher steadied on a tripod can do the trick if you don’t have a telescope. You can catch a moon fading and disappearing into Jupiter’s shadow see Callisto (the farthest moon from Jupiter) at maximum elongation. See Jupiters largest moons pass in front of and behind the planet. Don't miss the warm-up act, either, when two of Jupiter's moons pair up in a captivating double-shadow transit. Bundle up and enjoy the Orionid meteor shower under moonless skies this week. The four main Jupiter events are the Shadow Transit, Satellite Transit, Satellite Occultation, and Satellite Eclipse. See Jupiter and Galilean moons throughout December 2023 See Jupiters Galilean Moons in November during and after opposition. Orionid Meteors Fly Two Moons Shadow Jupiter. These are Jupiter events that you can have a fun time watching. Rather than four dots circling around a disc (Jupiter), what you can expect to see are a couple or more shining objects sitting off to either side of the disc and at times, a moon hidden behind Jupiter (occulted), crossing in front of Jupiter, casting a shadow across the mid section of Jupiter’s surface, or eclipsed. The chart below shows how long they each take to orbit Jupiter and their average distance from the planet. The Jupiter moons you can see, each pass in front, behind, and around Jupiter in their orbits. What to expect in viewing Jupiter’s moons? From Earth, the Jupiter system appears on its edge because its plane roughly resembles that of Earth’s orbit.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |