Imagine a world where asteroids, those ancient remnants of our solar system's formation, are given names that honor the very people and places working tirelessly to keep our planet safe from their potential impact. It's a fascinating story, and one that deserves to be told.
In a groundbreaking move, the International Astronomical Union (IAU) approved the naming of ten asteroids in 2025 to recognize the European Space Agency's (ESA) crucial role in planetary defense. These celestial bodies, once known only by their provisional designations, now carry the names of ESA's key figures and locations, forever linking them to the agency's mission to protect Earth.
But here's where it gets controversial: one of these asteroids, provisionally known as 2021 FE40, has been officially named (810657) ESOC, after ESA's European Space Operations Centre in Darmstadt, Germany. This center has been the nerve center for Europe's most ambitious spacecraft missions for almost six decades, from Earth orbit to distant planets and asteroids. And this is the part most people miss: ESOC also serves as the administrative hub for ESA's Space Safety Programme, including its Planetary Defense team.
The asteroid, discovered by astronomer Erwin Schwab and ESA's former Head of Planetary Defense, Detlef Koschny, is estimated to be between 600 and 1300 meters across, making it a formidable presence in our solar system. It orbits beyond Mars, a constant reminder of the potential threats that lurk in space.
Schwab and Koschny were invited to ESOC to celebrate this naming ceremony, which was part of ESA Director of Operations Rolf Densing's New Year's address on January 13th. Densing praised the work of the Planetary Defense Office and all the teams involved, saying, "The naming of these asteroids honors the great work and dedication of those who study asteroids and use their knowledge to protect our planet."
(810657) ESOC is just one of ten asteroids (and one comet) that received names in 2025, each honoring a different aspect of ESA's Planetary Defense activities. The full list includes names like (126247) Laurafaggioli, named after Laura Faggioli for her work on asteroid orbit determination and risk assessment, and (296587) Ocaña, named after Francisco Ocaña for his career achievements in the field of Planetary Defense.
But how exactly do asteroids get their names? The process is managed by the IAU's Working Group for Small Body Nomenclature. When an asteroid is first discovered, it's given a provisional designation based on the date of discovery. For example, '2021 FE40' indicates the year of discovery and the half-month within that year. Once the asteroid's orbit is well-known and its future trajectory is predictable, it receives a permanent number. Roughly 850,000 of the 1.3 million known asteroids have received these permanent numbers.
Once an asteroid has its permanent number, its discoverers propose a name to replace the provisional designation. This name must follow IAU guidelines, be no longer than 16 characters, and be pronounceable in at least one recognized language. It cannot be offensive or refer to personal pets, commercial products, or recent political or military figures.
Some asteroid families have naming traditions; for instance, Jupiter's Trojan asteroids are named after figures associated with the Trojan War, while the Centaur family is named after mythological centaurs. Once approved, the asteroid takes on its official name, written as '(number) Name', just like the recently named (810657) ESOC.
ESA's efforts to protect Earth from hazardous asteroids are truly inspiring. To learn more about their work, check out the links below. And remember, the next time you look up at the night sky, you might just be gazing at one of these named asteroids, a reminder of the ongoing battle to keep our planet safe.
What are your thoughts on this unique way of honoring ESA's contributions to planetary defense? Do you think it's a fitting tribute, or do you have other ideas for recognizing such important work? Feel free to share your thoughts in the comments!
