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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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Upcoming Occultations

2025 Dec 19 ~19:19 UT: (115321) 2003 SK219 occults UCAC4 433-002898 (13.2 mag) 2025 Dec 18 ~01:06 UT: (146) Lucina occults UCAC4 587-035293 (12.3 mag) 2025 Dec 16 ~03:05 UT: (458) Hercynia occults UCAC4 506-044902 (13.2 mag) 2025 Dec 15 ~22:23 UT: (24332) Shaunalinn occults HIP 19641 (5.8 mag) 2025 Dec 15 ~17:06 UT: (200) Dynamene occults UCAC4 607-036518 (13.2 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2025 Dec 19 ~19:19 UT: (115321) 2003 SK219 occults UCAC4 433-002898 (13.2 mag)

2025-12-14
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2025 Dec 18 ~01:06 UT: (146) Lucina occults UCAC4 587-035293 (12.3 mag)

2025-12-14
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2025 Dec 16 ~03:05 UT: (458) Hercynia occults UCAC4 506-044902 (13.2 mag)

2025-12-14
Main-Belt Asteroids Upcoming Occultation

2025 Dec 15 ~22:23 UT: (24332) Shaunalinn occults HIP 19641 (5.8 mag)

2025-12-07
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation

2025 Dec 15 ~17:06 UT: (200) Dynamene occults UCAC4 607-036518 (13.2 mag)

2025-12-07
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  • Past Events
2025 Dec 20 ~22:18 UT: (23013) Carolsmyth occults HIP 17588 (6.4 mag)
Main-Belt Asteroids
2025 Dec 20 ~22:18 UT: (23013) Carolsmyth occults HIP 17588 (6.4 mag)
2025 Dec 20 ~22:17 UT: (22649) Paulineloader occults TYC 2393-00984-1 (8.6 mag)
Main-Belt Asteroids
2025 Dec 20 ~22:17 UT: (22649) Paulineloader occults TYC 2393-00984-1 (8.6 mag)
2025 Dec 20 ~22:05 UT: (10728) Vladimirfock occults HIP 37278 (7.2 mag)
Main-Belt Asteroids
2025 Dec 20 ~22:05 UT: (10728) Vladimirfock occults HIP 37278 (7.2 mag)
2025 Dec 19 ~22:04 UT: (838) Seraphina occults UCAC4 539-007964 (15.0 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Suspected binary asteroids - GaiaMoons project
2025 Dec 19 ~22:04 UT: (838) Seraphina occults UCAC4 539-007964 (15.0 mag)
2025 Dec 20 ~22:18 UT: (23013) Carolsmyth occults HIP 17588 (6.4 mag)
Main-Belt Asteroids
2025 Dec 20 ~22:18 UT: (23013) Carolsmyth occults HIP 17588 (6.4 mag)
2025 Dec 15 ~17:06 UT: (200) Dynamene occults UCAC4 607-036518 (13.2 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation
2025 Dec 15 ~17:06 UT: (200) Dynamene occults UCAC4 607-036518 (13.2 mag)
2025 Dec 15 ~22:23 UT: (24332) Shaunalinn occults HIP 19641 (5.8 mag)
Main-Belt Asteroids Upcoming Occultation
2025 Dec 15 ~22:23 UT: (24332) Shaunalinn occults HIP 19641 (5.8 mag)
2025 Dec 16 ~03:05 UT: (458) Hercynia occults UCAC4 506-044902 (13.2 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation
2025 Dec 16 ~03:05 UT: (458) Hercynia occults UCAC4 506-044902 (13.2 mag)
2025 Dec 13 ~19:15 UT: (20822) Lintingnien occults HIP 39839 (6.8 mag)
Main-Belt Asteroids Past Event
2025 Dec 13 ~19:15 UT: (20822) Lintingnien occults HIP 39839 (6.8 mag)
2025 Dec 13 ~03:10 UT: (3206) Wuhan occults UCAC4 584-017655 (11.9 mag)
Main-Belt Asteroids Past Event Suspected binary asteroids - GaiaMoons project
2025 Dec 13 ~03:10 UT: (3206) Wuhan occults UCAC4 584-017655 (11.9 mag)
2025 Dec 12 ~04:13 UT: (34) Circe occults UCAC4 522-031635 (12.8 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Past Event
2025 Dec 12 ~04:13 UT: (34) Circe occults UCAC4 522-031635 (12.8 mag)
2025 Dec 12 ~04:04 UT: (554) Peraga occults UCAC4 481-049803 (12.6 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Past Event
2025 Dec 12 ~04:04 UT: (554) Peraga occults UCAC4 481-049803 (12.6 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 Observation Campaign for Slow Rotators Upcoming Occultation

2025 Dec 15 ~17:06 UT: (200) Dynamene occults UCAC4 607-036518 (13.2 mag)

2025-12-07

Slow-rotating asteroid! Faint star! Faint mag drop of only 0.24 mag! Last update: 2025 Dec 07, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1809-200-98951-649967-U036518

Main-Belt Asteroids Upcoming Occultation

2025 Dec 15 ~22:23 UT: (24332) Shaunalinn occults HIP 19641 (5.8 mag)

2025-12-07

Bright star! Short max. duration of only 0.41 s! Last update: 2025 Dec 07, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1809-24332-59857-649090-H19641

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2025 Dec 16 ~03:05 UT: (458) Hercynia occults UCAC4 506-044902 (13.2 mag)

2025-12-14

Suspected binary asteroid! Faint mag drop of only 0.8 mag! Last update: 2025 Dec 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1810-458-113103-648696-U044902 GAIAMOONS link: https://gaiamoons.imcce.fr/occ.php?p=55252

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2025 Dec 18 ~01:06 UT: (146) Lucina occults UCAC4 587-035293 (12.3 mag)

2025-12-14

Suspected binary asteroid! Faint mag drop of only 0.8 mag! Raphaël Lallemand (GAIAMOONS) wrote on Dec 8 on PLANOCCULT: The main body is 131.0 km wide; the potential satellite is…

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2025 Dec 19 ~19:19 UT: (115321) 2003 SK219 occults UCAC4 433-002898 (13.2 mag)

2025-12-14

Suspected binary asteroid! Faint star! Short max. duration of only 0.82 s! Last update: 2025 Dec 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1813-115321-33260-647782-U002898 GAIAMOONS link: https://gaiamoons.imcce.fr/occ.php?p=61058

Main-Belt Asteroids Observation Campaign for Slow Rotators Suspected binary asteroids - GaiaMoons project

2025 Dec 19 ~22:04 UT: (838) Seraphina occults UCAC4 539-007964 (15.0 mag)

2025-12-14

Slow-rotating asteroid! Suspected binary asteroid! Very faint star! Faint mag drop of only 0.43 mag! Last update: 2025 Dec 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1813-838-57633-649111-U007964

Main-Belt Asteroids

2025 Dec 19 ~22:46 UT: (21453) Victorlevine occults HIP 7505 (5.3 mag)

2025-12-14

Bright star! Annular occultation due to large star diameter! Last update: 2025 Dec 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1813-21453-23115-648500-H7505

Main-Belt Asteroids

2025 Dec 20 ~22:05 UT: (10728) Vladimirfock occults HIP 37278 (7.2 mag)

2025-12-14

Bright star! Short max. duration of only 0.31 s! Last update: 2025 Dec 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1814-10728-108585-649262-H37278

Main-Belt Asteroids

2025 Dec 20 ~22:17 UT: (22649) Paulineloader occults TYC 2393-00984-1 (8.6 mag)

2025-12-14

Bright star! Short max. duration of only 0.47 s! Last update: 2025 Dec 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1814-22649-73836-650059-T00984-1

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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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