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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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Upcoming Occultations

2025 Nov 30 ~20:38 UT: (9142) Rhesus occults UCAC4 450-003635 (14.5 mag) 2025 Nov 29 ~01:08 UT: (10562) 1993 UB1 occults TYC 3298-01516-1 (8.6 mag) 2025 Nov 27 ~05:23 UT: (3487) Edgeworth occults HIP 33275 (7.5 mag) 2025 Nov 27 ~03:20 UT: (8897) Defelice occults UCAC4 511-005737 (8.5 mag) 2025 Nov 25 ~19:45 UT: (18930) Athreya occults HIP 30346 (8.3 mag)
Jupiter Trojans - predicted by the ERC Lucky Star project Upcoming Occultation

2025 Nov 30 ~20:38 UT: (9142) Rhesus occults UCAC4 450-003635 (14.5 mag)

2025-11-21
Main-Belt Asteroids Upcoming Occultation

2025 Nov 29 ~01:08 UT: (10562) 1993 UB1 occults TYC 3298-01516-1 (8.6 mag)

2025-11-21
Main-Belt Asteroids Upcoming Occultation

2025 Nov 27 ~05:23 UT: (3487) Edgeworth occults HIP 33275 (7.5 mag)

2025-11-21
Main-Belt Asteroids Upcoming Occultation

2025 Nov 27 ~03:20 UT: (8897) Defelice occults UCAC4 511-005737 (8.5 mag)

2025-11-21
Main-Belt Asteroids Upcoming Occultation

2025 Nov 25 ~19:45 UT: (18930) Athreya occults HIP 30346 (8.3 mag)

2025-11-13
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  • Past Events
2025 Dec 01 ~01:22 UT: (16800) 1997 JQ16 occults HIP 11971 (7.0 mag)
Main-Belt Asteroids
2025 Dec 01 ~01:22 UT: (16800) 1997 JQ16 occults HIP 11971 (7.0 mag)
2025 Nov 30 ~20:38 UT: (9142) Rhesus occults UCAC4 450-003635 (14.5 mag)
Jupiter Trojans - predicted by the ERC Lucky Star project Upcoming Occultation
2025 Nov 30 ~20:38 UT: (9142) Rhesus occults UCAC4 450-003635 (14.5 mag)
2025 Nov 29 ~01:08 UT: (10562) 1993 UB1 occults TYC 3298-01516-1 (8.6 mag)
Main-Belt Asteroids Upcoming Occultation
2025 Nov 29 ~01:08 UT: (10562) 1993 UB1 occults TYC 3298-01516-1 (8.6 mag)
2025 Nov 27 ~05:23 UT: (3487) Edgeworth occults HIP 33275 (7.5 mag)
Main-Belt Asteroids Upcoming Occultation
2025 Nov 27 ~05:23 UT: (3487) Edgeworth occults HIP 33275 (7.5 mag)
2025 Dec 01 ~01:22 UT: (16800) 1997 JQ16 occults HIP 11971 (7.0 mag)
Main-Belt Asteroids
2025 Dec 01 ~01:22 UT: (16800) 1997 JQ16 occults HIP 11971 (7.0 mag)
2025 Nov 25 ~19:45 UT: (18930) Athreya occults HIP 30346 (8.3 mag)
Main-Belt Asteroids Upcoming Occultation
2025 Nov 25 ~19:45 UT: (18930) Athreya occults HIP 30346 (8.3 mag)
2025 Nov 29 ~01:08 UT: (10562) 1993 UB1 occults TYC 3298-01516-1 (8.6 mag)
Main-Belt Asteroids Upcoming Occultation
2025 Nov 29 ~01:08 UT: (10562) 1993 UB1 occults TYC 3298-01516-1 (8.6 mag)
2025 Nov 27 ~03:20 UT: (8897) Defelice occults UCAC4 511-005737 (8.5 mag)
Main-Belt Asteroids Upcoming Occultation
2025 Nov 27 ~03:20 UT: (8897) Defelice occults UCAC4 511-005737 (8.5 mag)
2025 Nov 24 ~21:56 UT: (3206) Wuhan occults UCAC4 574-019758 (11.3 mag)
Main-Belt Asteroids Past Event Suspected binary asteroids - GaiaMoons project
2025 Nov 24 ~21:56 UT: (3206) Wuhan occults UCAC4 574-019758 (11.3 mag)
2025 Nov 24 ~18:17 UT: (23747) Rahaelgupta occults TYC 1265-00499-1 (7.6 mag)
Main-Belt Asteroids Past Event
2025 Nov 24 ~18:17 UT: (23747) Rahaelgupta occults TYC 1265-00499-1 (7.6 mag)
2025 Nov 24 ~01:43 UT: (523752) 2014 VU37 occults UCAC4 540-012458 (15.2 mag)
Past Event Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project
2025 Nov 24 ~01:43 UT: (523752) 2014 VU37 occults UCAC4 540-012458 (15.2 mag)
2025 Nov 22 ~21:19 UT: (1878) Hughes occults TYC 0647-00406-1 (8.4 mag)
Main-Belt Asteroids Past Event
2025 Nov 22 ~21:19 UT: (1878) Hughes occults TYC 0647-00406-1 (8.4 mag)
News

Concerns Predictions from 2025 October 01 Onwards

2025-09-29

From 2025 October 1, due to the high number of events during the winter months, this website will only present occultations by asteroids from observation campaigns, by satellites of planets…

Main-Belt Asteroids Upcoming Occultation

2025 Nov 25 ~19:45 UT: (18930) Athreya occults HIP 30346 (8.3 mag)

2025-11-13

Bright star! Short max. duration of only 0.48 s! Last update: 2025 Nov 13, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1789-18930-90625-649633-H30346

Main-Belt Asteroids Upcoming Occultation

2025 Nov 27 ~03:20 UT: (8897) Defelice occults UCAC4 511-005737 (8.5 mag)

2025-11-21

Bright star! Trans-Atlantic Event! Short max. duration of only 0.43 s! Last update: 2025 Nov 21, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1791-8897-52196-648767-U005737

Main-Belt Asteroids Upcoming Occultation

2025 Nov 27 ~05:23 UT: (3487) Edgeworth occults HIP 33275 (7.5 mag)

2025-11-21

Bright star! Short max. duration of only 0.92 s! Last update: 2025 Nov 21, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1791-3487-98182-648369-H33275

Main-Belt Asteroids Upcoming Occultation

2025 Nov 29 ~01:08 UT: (10562) 1993 UB1 occults TYC 3298-01516-1 (8.6 mag)

2025-11-21

Bright star! Trans-Atlantic Event! Short max. duration of only 0.98 s! Last update: 2025 Nov 21, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1793-10562-32543-651039-T01516-1

Jupiter Trojans - predicted by the ERC Lucky Star project Upcoming Occultation

2025 Nov 30 ~20:38 UT: (9142) Rhesus occults UCAC4 450-003635 (14.5 mag)

2025-11-21

Jupiter Trojan! Very faint star! Last update: 2025 Nov 21, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1794-9142-39437-648001-U003635 Prediction of the Lucky Star project (2025 Aug 21): https://lesia.obspm.fr/lucky-star/occ.php?p=148039

Main-Belt Asteroids

2025 Dec 01 ~01:22 UT: (16800) 1997 JQ16 occults HIP 11971 (7.0 mag)

2025-11-21

Bright star! Trans-Atlantic event! Short max. duration of only 0.43 s! Last update: 2025 Nov 21, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1795-16800-36723-648736-H11971

IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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