The Northolt Branch Observatories is an astronomical observatory located in London, England.

[2] NBO collects follow-up astrometry of near-Earth asteroids and other small Solar System objects.

[1] (NBO; Observatory codes: Z80, Z48 and Z37)[citation needed] The two main belt asteroids 72834 Guywells and 128345 Danielbamberger are named after members of the Northolt Branch Observatories team.

[3][4] Northolt Branch Observatories was founded in 2015, as an extension of the London-based Northolt Branch Astro group of local amateur astrophotographers.

[5] It is a British-German collaboration: Data is collected on-site by observers at the telescopes in England, and then processed remotely from Germany.