How to Spot Comet NEOWISE
Two comets that raced into the inner solar system earlier this year may have fizzled out, but now Comet NEOWISE (C/2020 F3) is putting on a show for those willing to stay up late or get up early. It’s not as bright as the so called “great” comets like Halley’s or Hale-Bopp, but it has surprised astronomers since reaching perihelion, becoming a naked-eye object for many observers.
Here is an excerpt about the comet from NASA from their “Astronomy Picture of the Day” page on July 7th, which includes a fabulous image of the comet over Lebanon.
“Comet C/2020 F3 (NEOWISE) was discovered in late March and brightened as it reached its closest approach to the Sun, inside the orbit of Mercury, late last week. The interplanetary iceberg survived solar heating, so far, and is now becoming closer to the Earth as it starts its long trek back to the outer Solar System. As Comet NEOWISE became one of the few naked-eye comets of the 21st Century, word spread quickly, and the comet has already been photographed behind many famous sites and cities around the globe. The future brightness of Comet NEOWISE remains somewhat uncertain, but the comet will likely continue to be findable not only in the early morning sky, but also next week in the early evening sky.”
Comet NEOWISE from ISS, July 5th pic.twitter.com/pAbGdtchAc
— Seán Doran (@_TheSeaning) July 7, 2020
This time lapse captured from the International Space Station on July 5th shows the comet rising above the horizon in spectacular fashion, but you don’t have to be onboard the ISS to see NEOWISE. The image at the top of the page was taken on the morning of July 8th by an employee at the National Weather Service branch in Elko, Nevada. The National Weather Service in Seattle also posted images of the comet taken Wednesday morning.
Since it's going to be another 6,000 years before comet Neowise revisits the inner solar system, we thought it would be a good idea to grab some photos this morning when the skies advantageously cleared to our northeast. #wawx pic.twitter.com/F0bxompWEX
— NWS Seattle (@NWSSeattle) July 8, 2020
Where and When to Look
There are two better times to try to see NEOWISE: before or after sunset. In early July, NEOWISE was in the constellation of Auriga, drifting to the west. You’ll likely need a horizon free of tall trees or buildings, since the comet is hovering around 5-10° above the horizon before dawn. As the middle and end of July approach, dawn viewing will slowly taper off, but evening viewing should improve as the comet appears higher above the horizon.
Had a lovely view of comet C/2020 F3 Neowise this morning. If you're in the UK and want to see it, hopefully this chart may help. Note that times are UT – so add an hour to get to BST. pic.twitter.com/mu3ETN8TGb
— Pete Lawrence (@Avertedvision) July 6, 2020
Finding the bright star Capella in the Northeastern sky is a good starting point. You can use a number of “sky chart” apps on your phone or tablet to help you locate the star or Auriga.
Once you find Capella, look down and slightly north to try to pick out a small ball of fuzz. You’ll likely have to do this with binoculars or a telescope at first, but the comet’s reported magnitude in the range of 1 to -1 means you can spot it with the naked eye, it just may be difficult. Depending on your latitude and how long twilight lasts, you’ll likely want to start looking about 90 minutes to an hour before sunrise. This will likely present the best viewing and photographing options for NEOWISE.
From July 15th to the 20th, the comet will appear closer to Lynx and Ursa Major, slightly higher on the horizon, but it also may lose some of its luster.
Where will Comet #NEOWISE be in the (late!) evening sky during July? This easy to use chart will show you – basically just look for the Big Dipper/Plough and "star hop" to the comet from there. Hopefully naked eye bright but have binocs ready in case it isn't. 🙂 Chart 1 of 2 pic.twitter.com/rgYlWe0V9j
— mars_stu (@mars_stu) July 3, 2020
If you’d rather stay up late than wake up early, you can also spot NEOWISE in the evening sky! It will steadily climb higher and rise earlier toward the end of the month, but it also may not be as bright. Look for Capella early in the month to find NEOWISE, then under The Big Dipper (Ursa Major) towards the middle and end of July.
July 12th will likely be the first evening to spot NEOWISE since it should appear about 5 degrees above the horizon in the north-northwest a bit over an hour after sunset. By mid-July, its altitude above the horizon will double.
July 22nd update: NEOWISE is still visible as a naked eye object and will pass closest to earth on July 22nd. Look to the Northwest after dusk, it should be just under the Big Dipper, slowly dropping toward the horizon in the hours after sunset.
You may want to try to find this comet now, since your next opportunity won’t come for over 6,000 years!
There are a lot of other fun space-related events to watch during the month of July. See the full list here.