Green comet sky map
Author: d | 2025-04-24
Comet maps and mobile apps like Sky Map assist in locating the comet. Green comets, like the Green Comet, get their color from carbon and nitrogen compounds. Yellow
Green Comet 2025: Find It in the Sky!
I've read recent online news media posts about Comet ZTF with a mix of humor and alarm. All this talk about a rare, green comet streaking across the sky that was last seen by the Neanderthals.First, lots of comets are green — at least in the telescope. The color comes from carbon, which glows a striking aqua green when energized by the sun's ultraviolet (UV) light. The hue shows up beautifully in time exposure photographs, and it's occasionally visible in brighter comets when viewed through a telescope. But as far as the naked eye or even binoculars, it's a rare sight. My daughter and I share Comet Neowise together at dawn on a buggy July morning in 2020.Contributed / Bob King While it's true the comet last passed this way some 50,000 years ago, it's very unlikely any Homo sapiens or Neanderthals noticed it unless ZTF made an exceptionally close approach to Earth. This time around it passes relatively nearby but won't be bright in the traditional sense like Comets NEOWISE (in 2020) and Hale-Bopp (1997). With those, you could just step outside, allow a few minutes to get used to the dark and ba-boom — there they were!Comet ZTF is visible in binoculars right now but only from a reasonably dark sky with a minimum of light pollution. Through my 10x50s it's a small, fuzzy glow about 1/3 the size of the full moon with a brighter center and whiff of a tail pointing north. Comet ZTF (C/2022 E3) marches up the northern sky in the next two weeks. To find it, face north and use the labeled stars on the map to help point you to the comet. Brighter stars have proper names. Fainter ones bear letters of the Greek alphabet. In mid-January, ZTF is still low in the northeastern sky before midnight. But by the third week of January it will be easy to view during convenient evening hours. Contributed / Stellarium with additions by Bob King Through a 6-inch or larger telescope, the comet becomes increasingly more impressive. In my 15-inch scope it reveals a bright, dense core (called the nuclear region) buried in a fuzzy coma that sprouts a lovely, fan-shaped tail. No color is visible. At least for now, Comet ZTF is still too faint to see without optical aid, but as you'll learn, that may change later this month. Observers estimate its current Comet maps and mobile apps like Sky Map assist in locating the comet. Green comets, like the Green Comet, get their color from carbon and nitrogen compounds. Yellow Update: The Green Comet (c/2022 e3 ZTF) otherwise known as Comet ZTF is currently traveling away from Earth and out of our solar system, never to return again. Your last (and best) chance to catch a glimpse will be on February 10. The full Moon will interfere until that time. (See below.)Learn more about upcoming sky events in our February Night Sky Guide.Published on January 12, 2023:Newly-discovered Comet ZTF is coming the closest to the Earth in 50,000 years, becoming visible to the unaided eye, and making big headlines. Some are calling it a “super rare” and “bright green” comet, but will it live up to the hype? We explain.Comet ZTF FactsComet ZTF was discovered in March 2022 by a wide field survey camera attached to a telescope known as Zwicky Transient Facility (ZTF) at the Palomar Observatory in Southern California (overseen by the Planetary Society). ZTF scans the entire northern sky every two days and captures hundreds of thousands of stars and galaxies in a single shot. Many comets have been found with this instrument. The most recent is catalogued as Comet c/2022 e3 ZTF, Comet ZTF for short.Why Is It Rare?Over the last 50,000 years, Comet ZTF has travelled a distance of 2.8 trillion miles and will make its closest approach to the Earth on Feb 1, 2023 (a distance of 26 million miles), according to Dan Bartlett/NASA. Orbital computations suggest that Comet ZTF may never return again.What Makes ZTF A Green Comet?The greenish color is likely due to a molecule made from two carbon atoms bonded together, called dicarbon. This unusual chemical process is confined chiefly to the head, not the tail. If you get a look at Comet ZTF, that greenish hue is likely to be quite faint (if it is visible at all). The appearance of green comets due to dicarbon is fairly uncommon.Recent images show the head (coma) appearing to be distinctly green and trailed by an impressively long thin blush appendage (the tail). But that is what a camera taking a long exposure sees. The tint will look much less green to theComments
I've read recent online news media posts about Comet ZTF with a mix of humor and alarm. All this talk about a rare, green comet streaking across the sky that was last seen by the Neanderthals.First, lots of comets are green — at least in the telescope. The color comes from carbon, which glows a striking aqua green when energized by the sun's ultraviolet (UV) light. The hue shows up beautifully in time exposure photographs, and it's occasionally visible in brighter comets when viewed through a telescope. But as far as the naked eye or even binoculars, it's a rare sight. My daughter and I share Comet Neowise together at dawn on a buggy July morning in 2020.Contributed / Bob King While it's true the comet last passed this way some 50,000 years ago, it's very unlikely any Homo sapiens or Neanderthals noticed it unless ZTF made an exceptionally close approach to Earth. This time around it passes relatively nearby but won't be bright in the traditional sense like Comets NEOWISE (in 2020) and Hale-Bopp (1997). With those, you could just step outside, allow a few minutes to get used to the dark and ba-boom — there they were!Comet ZTF is visible in binoculars right now but only from a reasonably dark sky with a minimum of light pollution. Through my 10x50s it's a small, fuzzy glow about 1/3 the size of the full moon with a brighter center and whiff of a tail pointing north. Comet ZTF (C/2022 E3) marches up the northern sky in the next two weeks. To find it, face north and use the labeled stars on the map to help point you to the comet. Brighter stars have proper names. Fainter ones bear letters of the Greek alphabet. In mid-January, ZTF is still low in the northeastern sky before midnight. But by the third week of January it will be easy to view during convenient evening hours. Contributed / Stellarium with additions by Bob King Through a 6-inch or larger telescope, the comet becomes increasingly more impressive. In my 15-inch scope it reveals a bright, dense core (called the nuclear region) buried in a fuzzy coma that sprouts a lovely, fan-shaped tail. No color is visible. At least for now, Comet ZTF is still too faint to see without optical aid, but as you'll learn, that may change later this month. Observers estimate its current
2025-04-12Update: The Green Comet (c/2022 e3 ZTF) otherwise known as Comet ZTF is currently traveling away from Earth and out of our solar system, never to return again. Your last (and best) chance to catch a glimpse will be on February 10. The full Moon will interfere until that time. (See below.)Learn more about upcoming sky events in our February Night Sky Guide.Published on January 12, 2023:Newly-discovered Comet ZTF is coming the closest to the Earth in 50,000 years, becoming visible to the unaided eye, and making big headlines. Some are calling it a “super rare” and “bright green” comet, but will it live up to the hype? We explain.Comet ZTF FactsComet ZTF was discovered in March 2022 by a wide field survey camera attached to a telescope known as Zwicky Transient Facility (ZTF) at the Palomar Observatory in Southern California (overseen by the Planetary Society). ZTF scans the entire northern sky every two days and captures hundreds of thousands of stars and galaxies in a single shot. Many comets have been found with this instrument. The most recent is catalogued as Comet c/2022 e3 ZTF, Comet ZTF for short.Why Is It Rare?Over the last 50,000 years, Comet ZTF has travelled a distance of 2.8 trillion miles and will make its closest approach to the Earth on Feb 1, 2023 (a distance of 26 million miles), according to Dan Bartlett/NASA. Orbital computations suggest that Comet ZTF may never return again.What Makes ZTF A Green Comet?The greenish color is likely due to a molecule made from two carbon atoms bonded together, called dicarbon. This unusual chemical process is confined chiefly to the head, not the tail. If you get a look at Comet ZTF, that greenish hue is likely to be quite faint (if it is visible at all). The appearance of green comets due to dicarbon is fairly uncommon.Recent images show the head (coma) appearing to be distinctly green and trailed by an impressively long thin blush appendage (the tail). But that is what a camera taking a long exposure sees. The tint will look much less green to the
2025-04-15An extremely rare comet was visible during dawn in the sky above Abu Dhabi on January 14. Comets are of interest to scientists because they are remnants of the early Solar System, and can tell us about the conditions and composition of the early Solar System. When a comet approaches the Sun, the heat causes the ice in the comet to turn into a gas, which surrounds the nucleus of the comet in a bright coma. The gas and dust in the coma form a bright tail that always points away from the Sun.When these comets pass by Earth, they are seen as glowing balls in the sky with a faintly lit tail. Although comets periodically pass by Earth, the expected flyby of a recent, rare green comet has excited scientists and skywatchers around the world as it has come back for the first time in nearly 50000 years! And it may never do so again!What is Comet C/2022 E3 (ZTF)?Although comets often make close flybys, the Comet C/2022 E3 (ZTF) is particularly special as it has a period of around 50000 years. That means the last time it flew past Earth closely, it was seen by Neanderthals during the Upper Paleolithic period on Earth nearly 50000 years ago.Comet E3 ZTF is a long-period comet that originated in the Oort cloud. It was discovered by astronomers using the wide-field survey camera at the Zwicky Transient Facility in 2022 in early March, NASA revealed. It passed closest to Earth a couple of days ago and was even witnessed in the sky in Abu Dhabi between 05:01 to 05:36 UAE on January 14. Astronomers estimate this comet will come within roughly 26 million miles of Earth on February 1.How to watch the Comet ZTFWhile the green comet will be visible to the naked eye on February 1, there are some preconditions to be able to watch it. You need to be in an area with relatively low light pollution and clear sky. This means that people living in big cities might not be able to see the comet directly or with the
2025-03-27Naked eye.When and where to see Comet ZTFDuring the latter part of January into early February, ZTF may become bright enough to be glimpsed with the naked eye. Use a reliable star map (or app) to track the night-by-night change in position relative to the background stars and constellations. Below are dates and approximate locations. We recommend going outside and looking northwest at approximately 9 pm local time (no matter where you are).January 12-14Look towards constellation Corona Borealis before sunrise from January 12-14.January 14-20Look towards constellation Boötes before sunrise from January 14-20.January 21The comet will be visible in the night sky (previously only visible in the early morning hours). Look north, above the Big Dipper—between the constellations Boötes and Draco—at approximately 9 pm local time on January 21. The new Moon on this night should make the comet easy to spot!Comet ZTF locations, courtesy of the MISAO Project.January 22-25Look north, Find the Big Dipper and look above, near the constellation Draco (The Dragon) from January 22-25.January 26-27Look to the left of the Big Dipper (several degrees to the east of the Little Dipper) on January 26. On the following night, look north, three degrees to the upper right of orange Beta Ursae Minoris (formerly known as Kochab), the brightest of the two outer stars in the Little Dipper’s bowl. We recommend 8-10 pm your local time.January 29-30Look north and find Polaris (the North Star) and look to east (to the right) on January 29-30 at approximately 9pm your local time.February 1Look near the constellation Camelopardalis on February 1. (Comet ZTF reaches its closest point to Earth on this day.)February 2-4Look between the constellations Camelopardalis and Auriga from February 2-4. (Although we don’t recommend trying to locate the green comet during these days due to the brightness of the full Moon.)February 5Look towards the brilliant yellow-white star Capella (in the constellation Auriga). We do not recommend looking for the green comet on this date due to the full Moon.February 6Look within the triangle known as “The Kids” star pattern in Auriga, directly overhead at around 8 pm your local time on
2025-04-05When it approaches its closest point to our planet on Feb. 1, it won’t look as bright as a star, Gallagher noted. “It’s going to look like a small, fuzzy object — not a bright, pinpoint of light.”Marty McGuire, a NASA Solar System Ambassador from Bethlehem, Pennsylvania, agrees that casual observers shouldn’t get their hope up too high, because the comet might not get too bright and its orbit can be unpredictable as it moves closer to our hot sun.“The thing with comets is as they get closer, they could get demolished in a matter of minutes,” said McGuire, who is known in the Lehigh Valley as the “Backyard Astronomy Guy.”Because of its unpredictability, some experts say it might be a good idea for stargazers to grab a pair of binoculars or a small telescope and look for the green comet the next time the night sky is clear.A recently discovered comet known as Comet C/2022 E3 (ZTF) may be visible from Earth in January and February 2023, experts say. The green comet is expected to get brighter during the final weeks of January, but some experts say a telescope or binoculars may be needed to get the best view of this cosmic snowball.AP file photoWhen to see the green cometIf you live in the United States, or anywhere else in the northern hemisphere, the best time to look for the comet will be in the hours after midnight and before dawn, according to EarthSky.org and IGN.com. They recommend looking into the northern part of the sky.Some astronomy experts say this upcoming weekend could be ideal to look for this rare comet, because the sky will be very dark — thanks to the new moon phase on Saturday, Jan. 21. The moon will only be 3% illuminated on Friday, Jan.
2025-04-16Below the brightness that all but guarantees its visibility with the naked eye, but there's a reasonable chance that it will be.But Dr Brown says that a decent pair of binoculars or small telescope would of course make a difference.Sky News reader John Short took the photo at the top of this article using a Vaonis Vespera smart telescope.As for those aforementioned apps, some of them don't update regularly enough to include newly found objects like C/2022 E3 (ZTF), but the major ones at the top of your phone's app store search results should do.And either way, they'll be useful for helping you find those constellations if you're unsure.Dr Brown also recommends trying web-based resources like The Sky Live, which track new and popular interstellar objects and can help plan your observation. Image: Another shot from Pico de las Nieves, taken in the early hours of 1 February What if I'm reading this on Friday - am I out of luck?Not necessarily!This comet was visible before Wednesday night, and it will be visible beyond Thursday - you'll just need equipment."It should still be a decent sight for a few weeks," says Dr Brown."Though it will rapidly stop being visible through binoculars, requiring a small-medium telescope as it fades."It will also be moving across the sky throughout this time, so be sure to check where it is before hunting for it."More like this:Hundreds of sightings of fireball in UK skiesMeteorite boosts theory regarding origins of Earth's oceans Please use Chrome browser for a more accessible video player 2020: Comet streaks across N Ireland night sky And sorry, I should have asked this earlier… why is the comet green?This icy green comet gets its colour due to a reaction between its gases and the sun.The carbon compounds in those gases coming from the comet interact with ultraviolet light from the sun, and that's what gives it its green glow.It makes for a striking sight, and its orbital period - how long it takes to travel round the sun - means the last time it illuminated the night sky was back in the Stone Age.So, if you're heading out to see it, the very best of luck.
2025-04-10