Favourable Binary asteroid occultation prediction for 2027 (UK).

Favourable binary asteroid predictions 2027
UK, Ireland and adjacent areas
- where predicted shadows pass over the UK -

Asteroid diameters >10 km, Star brighter than m13 (but not exclusively) Maximum duration >1 sec.
Page updated 2026 May 10

These predicted paths are subject to orbital uncertainty. Please search for updates nearer the time using Occult Watcher Cloud : https://cloud.occultwatcher.net/.....See the IOTA-ES Call for Observations: https://call4obs.iota-es.de/

Gaia suspect moons and confirmed binary objects:
Source: Occult4. > DOWNLOAD <ZIP file of the images.

The shadow paths of moons are *not* generally included here. Moons can orbit out to 10x the primary diameter. In practice it's usual to record observations for +/- 1.5 min on either side of the mid-time. (Total record time of 3 min). Moons of smaller asteroids ( 5 - 20 km ) appear to be more common than previously suspected and is a furtile area for ammateur discovery. The process is to monitor asteroid predictions from within and outside the nominal shadow paths.

Key: "Gaia binary asteroid": Presence has been calculated by ESA with Gaia EDR3 data. Occultation observations are highly desired.
........."1 moon binary" : .........Has been detected by observation (occulations). More data is required to improve orbits.