The newly discovered asteroid - now called 2019 LF6 - orbits the sun every 151 days, or about the time between January 1 and the last day of May. The camera is used to survey the night skies for transient objects - stars that are exploding or flashing, as well as asteroids on the move.
Ye says he hopes the Twilight program will lead to more Atira discoveries, and he looks forward to the possible selection by NASA of the Near-Earth Object Camera (NEOCam) mission, a proposed spacecraft created to look for asteroids closer to the sun than previous surveys.
Previously, the same team, in collaboration with others as part of an observing campaign called Twilight, discovered another asteroid using this system. Earth's perihelion is 0.983 AU.
But 2019 LF6 is doubly rare because it is also relatively big, measuring around a kilometer across.
2019 LF6 is only the 20th IEO to ever be identified, but it's already the second IEO discovered this year. By comparison, Mercury orbits the Sun every 88 days, Venus' orbit takes 225 days and Earth orbits the Sun every 365 days. It's large, about a kilometre wide.
"Thirty years ago, people started organizing methodical asteroid searches, finding larger objects first, but now that a lot of them have been found, the bigger ones are rare birds", says Quanzhi Ye, a postdoctoral scholar at Caltech who discovered 2019 LF6, in a statement. "Now that most of (the larger objects) have been found, the bigger ones are rare birds".
A massive asteroid has eluded astronomers because of its unusual orbit - until now. The off-plane orbits suggest that they were flung out of the plane of the solar system by coming too close to Venus or Mercury at some time in the past. Like the grooves on a vinyl record, most planets align along a flat disk.
"Both of the large Atira asteroids that were found by ZTF orbit well outside the plane of the solar system", NASA JPL research and Caltech professor Tom Prince said in the statement. The asteroid is expected to be around a kilometer in width, which makes it much more exceptional that it's remained hidden for this lengthy. This instrument is well-suited for locating Atira asteroids, which feature very brief windows for observation.
"Because Atira asteroids are closer to the Sun and warmer than other asteroids, they are brighter in the infrared", George Helou, an executive at Caltech's astronomy center said. But ZTF is also good at finding asteroids in general.
And we're guessing Prince Harry would not approve critics invoking his mother's name... "And I've never come across such secrecy". According to a source cited by People this week, "They are basking in the glow and enjoying each day".
In addition to characterizing the current administration as "dysfunctional", Darroch said the USA president "radiates insecurity". After lashing out at Darroch in a series of tweets over the past two days, Trump had yet to weigh in on Darroch's departure.
These include options like aim assist, as well as the ability to toggle headbob, auto-mantling, running and crouching. This new mechanic will help making playing Borderlands 3 with a friend even more streamlined.
Nintendo this week revealed the two NES classics coming soon to the collection available to Nintendo Switch Online members. Now that we're already partway into July, Nintendo has lifted the curtain on what games they'll be adding this time around.
Operation Apocalypse Z content drop for Call of Duty: Black Ops 4 will add an eerie touch to the game. The new mode Alcatraz Portals Horde will challenge you to survive your enemies and the lethal horde.
The Texas billionaire will be remembered for challenging the US political system by running for president twice as an independent. After his unsuccessful lobbying efforts, Perot chose to run for president, launching historical changes in third party politics.
Struthers-Gardner experienced mobility challenges due to spine injuries from a fall in her 20s, according to The Telegraph . Her death was ruled an accident and a coroner's report stated that people should take "great care" when using metal straws.
Jadeja played an important role in giving India hope of progressing to the World Cup final, scoring 77 runs off 58 balls. The untimely run-out of Dhoni (50 off 72 balls) in the 49th over was the final nail in the coffin.
Powell also says the Fed is coordinating with other regulators, such as the Treasury Department, and other central banks overseas. Trump's attacks have raised alarms that he is undermining the Fed's long-recognized independence from political pressure.
More than 20 killed in PNG tribal violence
Teens and pregnant women are among those murdered in a tribal bloodbath in Papua Recent Guinea's Highlands home. Hela provincial administrator William Bando told AFP on Wednesday that the death toll could rise.
'Stranger Things' Monopoly game available for pre-order
Of course if you haven't seen Stranger Things 3 yet, you should know that the entire thing is a spoiler for the Season 3 finale. Stranger Things star Noah Schnapp believes his character Will Byers's sexuality is "up to the audience's interpretation".
Top 15 Highest-Paid Celebrities in the World 2019
Taylor Swift is immensely popular, so it wouldn't be surprising to learn that she is the highest-paid musician in the world. Swift's " Reputation " Stadium Tour grossed $266.1 million which was the highest-grossing tour in United States history.
South Africa - Africa Cup of Nations - 10 July 2019
Having only scraped through the group stage, Baxter's side shocked tournament hosts Egypt in the last 16. "Not at all. Baxter oversaw a 2-0 away win in Uyo at the start of the campaign before a 1-1 draw in Johannesburg.