by APOD Robot » Fri Feb 03, 2023 5:05 am
Polaris and the Trail of Comet ZTF
Explanation: Stars trace concentric arcs around the North Celestial Pole in this
three hour long night sky composite, recorded with a digital camera fixed to a tripod on January 31, near Ãger, Lleida, Spain. On that date
Comet C/2022 E3 (ZTF) was near its northernmost declination in
planet Earth's sky. That put the comet about 10 degrees from Earth's North Celestial Pole making the comet's position
circumpolar, always above the horizon, from all locations on planet Earth at more than 10 degrees northern latitude. In the startrail image, the extension of Earth's axis of rotation into space is at the left.
North star Polaris traces the short, bright, concentric arc less than a degree from the North Celestial Pole. The trail of Comet ZTF is indicated at the right, its apparent motion
mostly reflecting Earth's
rotation like the stars. But heading for its closest approach to planet Earth on February 1, the comet is also moving significantly with respect to the background stars. The diffuse greenish trail of Comet ZTF is an
almost concentric arc mingled with startrails as it sweeps through the long-necked constellation Camelopardalis.
[url=https://apod.nasa.gov/apod/ap230203.html] [img]https://apod.nasa.gov/apod/calendar/S_230203.jpg[/img] [size=150]Polaris and the Trail of Comet ZTF[/size][/url]
[b] Explanation: [/b] [url=https://www.astrobin.com/7b5ifq/]Stars trace concentric arcs[/url] around the North Celestial Pole in this [url=https://twitter.com/David_Barracuda/status/1621022440565657601/photo/1]three hour long night sky composite[/url], recorded with a digital camera fixed to a tripod on January 31, near Ãger, Lleida, Spain. On that date [url=https://skyandtelescope.org/astronomy-news/spot-circumpolar-comet-ztf-c-2022-e3-in-binoculars/?utm_source=cc&utm_medium=newsletter]Comet C/2022 E3 (ZTF)[/url] was near its northernmost declination in [url=https://www.petrhoralek.com/?p=23393]planet Earth's sky[/url]. That put the comet about 10 degrees from Earth's North Celestial Pole making the comet's position [url=https://earthsky.org/tonight/circumpolar-stars-dont-rise-or-set/]circumpolar[/url], always above the horizon, from all locations on planet Earth at more than 10 degrees northern latitude. In the startrail image, the extension of Earth's axis of rotation into space is at the left. [url=https://apod.nasa.gov/apod/ap110514.html]North star Polaris[/url] traces the short, bright, concentric arc less than a degree from the North Celestial Pole. The trail of Comet ZTF is indicated at the right, its apparent motion [url=https://www.youtube.com/watch?v=QzrLarAopXA]mostly[/url] reflecting Earth's [url=https://apod.nasa.gov/apod/ap070519.html]rotation[/url] like the stars. But heading for its closest approach to planet Earth on February 1, the comet is also moving significantly with respect to the background stars. The diffuse greenish trail of Comet ZTF is an [i]almost[/i] concentric arc mingled with startrails as it sweeps through the long-necked constellation Camelopardalis.
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