far asteroid Lagging behind in the wake of gravity Mars Noted in more detail than ever before, and the close-up shot reveals a striking resemblance – raising some interesting questions about the object’s ancient origins.
The asteroid in question, called (101429) 1998 VF31, Is part of a group of Trojan asteroids sharing the orbit of Mars.
Trojans are celestial bodies They are located in gravitational regions of space near other planets, and are 60 degrees in front and behind the planet.
What makes (101429) 1998 VF31 (hereafter referred to as “101429”) interesting is that among the extra Trojans on the Red Planet (those that follow behind Mars as it orbits around the Sun), 101429 appears to be unique.
The rest of the group, called the L5 Martian Trojans, all belong to what is known as the Eureka family, which consists of Eureka 5261 The discovery of the first Trojan on Mars – and a group of small fragments believed to have separated from the parent space rocks.
101429 is different, however, and in New study Led by astronomers from the Arma and Planetarium Observatory (AOP) in Northern Ireland, the researchers wanted to study the cause.
Using a spectrophotometer named X-SHOOTER on a Very Large Telescope (VLT) at the 8-meter-long European Southern Observatory in Chile, the team examined how sunlight is reflected by 101429 and its L5 relatives in the Eureka family. Only, it appears that 101429 and the Eureka clan are not relatives after all, as the analysis showed that 101429 shows a spectral match of a satellite closer to home.
“It appears that the spectrum of this particular asteroid appears to be an almost dead killer of parts of the moon where there are exposed base rocks such as inner craters and mountains,” He explains Astrochemist Galen Borisov.
While we cannot yet ascertain why this is so, the researchers say it is plausible that these Martian Trojan origins began somewhere far from the red planet, where the number 101429 represents “part of the remnants of the moon’s original hard crust.”
If true, then how did the long-lost moon twin end up as a Trojan linked to Mars?
“The early solar system was very different from where we see it today,” He explains The study’s lead author, astronomer AOP Apostolos Christou.
“The space between newly formed planets was filled with debris and collisions were common. Large asteroids [planetesimals] It was constantly hitting the moon and other planets. A fragment from this collision could have reached the orbit of Mars when the planet was still forming and was trapped in Trojan clouds.
It’s a captivating idea, but researchers say it’s not the only explanation for 101429’s past. It is also possible, and perhaps most likely, that Troy would instead represent a portion of Mars torn apart by a similar type of accident that affected the Red Planet; Or it could just be a familiar asteroid that, through the weathering processes of solar radiation, ended up looking like the moon.
More observations using more powerful spectrometers may shed more light on the issue of space ratios, and you could visit a spacecraft in the future. The team says, “Which, on the way to the Trojans, could be obtained from spectra on Mars or the Moon for direct comparison with the asteroid data.”
The results are reported in Icarus.