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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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Upcoming Occultations

2026 Jan 22 ~21:01 UT: (617) Patroclus / Menoetius occult UCAC4 544-004619 (15.8 mag) 2026 Jan 23 ~23:30 UT: (12914) 1998 SJ141 oocults UCAC4 663-038819 (13.6 mag) 2026 Jan 22 ~17:48 UT: (2478) Tokai occults UCAC4 465-000283 (12.1 mag) 2026 Jan 24 ~19:03 UT: (15256) 1990 RD1 occults UCAC4 505-024673 (8.2 mag) 2026 Jan 21 ~21:18 UT: (4332) Milton occults UCAC4 438-019376 (13.0 mag)
Flyby target of a spacecraft Jupiter Trojans - predicted by the ERC Lucky Star project Special Event Upcoming Occultation

2026 Jan 22 ~21:01 UT: (617) Patroclus / Menoetius occult UCAC4 544-004619 (15.8 mag)

2026-01-14
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Jan 23 ~23:30 UT: (12914) 1998 SJ141 oocults UCAC4 663-038819 (13.6 mag)

2026-01-12
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Jan 22 ~17:48 UT: (2478) Tokai occults UCAC4 465-000283 (12.1 mag)

2026-01-09
Main-Belt Asteroids Upcoming Occultation

2026 Jan 24 ~19:03 UT: (15256) 1990 RD1 occults UCAC4 505-024673 (8.2 mag)

2026-01-09
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Jan 21 ~21:18 UT: (4332) Milton occults UCAC4 438-019376 (13.0 mag)

2026-01-09
  • New Predictions
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  • Past Events
2026 Feb 20 ~21:56 UT: (54598) Bienor occults UCAC4 629-041023 (15.2 mag)
Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project
2026 Feb 20 ~21:56 UT: (54598) Bienor occults UCAC4 629-041023 (15.2 mag)
2026 Feb 20 ~18:00 UT: (903) Nealley occults UCAC4 506-049100 (15.0 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators
2026 Feb 20 ~18:00 UT: (903) Nealley occults UCAC4 506-049100 (15.0 mag)
2026 Feb 19 ~18:48 UT: (4890) Shikanosima occults TYC 1882-01417-1 (8.4 mag)
Main-Belt Asteroids
2026 Feb 19 ~18:48 UT: (4890) Shikanosima occults TYC 1882-01417-1 (8.4 mag)
2026 Feb 18 ~20:26 UT: (12914) 1998 SJ141 occults UCAC4 652-031970 (13.0 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project
2026 Feb 18 ~20:26 UT: (12914) 1998 SJ141 occults UCAC4 652-031970 (13.0 mag)
2026 Jan 22 ~21:01 UT: (617) Patroclus / Menoetius occult UCAC4 544-004619 (15.8 mag)
Flyby target of a spacecraft Jupiter Trojans - predicted by the ERC Lucky Star project Special Event Upcoming Occultation
2026 Jan 22 ~21:01 UT: (617) Patroclus / Menoetius occult UCAC4 544-004619 (15.8 mag)
2026 Jan 24 ~19:03 UT: (15256) 1990 RD1 occults UCAC4 505-024673 (8.2 mag)
Main-Belt Asteroids Upcoming Occultation
2026 Jan 24 ~19:03 UT: (15256) 1990 RD1 occults UCAC4 505-024673 (8.2 mag)
2026 Jan 24 ~19:57 UT: (265) Anna occults TYC 3401-01057-1 (9.6 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project
2026 Jan 24 ~19:57 UT: (265) Anna occults TYC 3401-01057-1 (9.6 mag)
2026 Jan 25 ~01:05 UT: (22889) Donnablaney occults TYC 1906-00258-1 (7.6 mag)
Main-Belt Asteroids
2026 Jan 25 ~01:05 UT: (22889) Donnablaney occults TYC 1906-00258-1 (7.6 mag)
2026 Jan 19 ~20:47 UT: (19126) Ottohahn occults UCAC4 454-043362 (13.5 mag)
Main-Belt Asteroids Past Event Suspected binary asteroids - GaiaMoons project
2026 Jan 19 ~20:47 UT: (19126) Ottohahn occults UCAC4 454-043362 (13.5 mag)
2026 Jan 19 ~20:36 UT: (9220) Yohisdayama occults HIP 30049 (6.8 mag)
Main-Belt Asteroids Past Event
2026 Jan 19 ~20:36 UT: (9220) Yohisdayama occults HIP 30049 (6.8 mag)
2026 Jan 19 ~17:26 UT: (4807) Noboru occults HIP 16813 (7.4 mag)
Main-Belt Asteroids Past Event
2026 Jan 19 ~17:26 UT: (4807) Noboru occults HIP 16813 (7.4 mag)
2026 Jan 19 ~00:55 UT: (1036) Ganymed occults UCAC4 349-056247 (14.8 mag)
Amor Asteroids Near Earth Asteroids - Call for Observations by the ACROSS Team Past Event
2026 Jan 19 ~00:55 UT: (1036) Ganymed occults UCAC4 349-056247 (14.8 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Jan 21 ~21:18 UT: (4332) Milton occults UCAC4 438-019376 (13.0 mag)

2026-01-09

Suspected binary asteroid! Short max. duration of only 0.95 s! Faint star! Raphaël Lallemand (GAIAMOONS) wrote on Planoccult on Jan 05: The satellite has a peak probability position between 10…

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

2026 Jan 22 ~17:48 UT: (2478) Tokai occults UCAC4 465-000283 (12.1 mag)

2026-01-09

Suspected binary asteroid! Short max. duration of only 0.31 s! Raphaël Lallemand (GAIAMOONS) wrote on Planoccult on Jan 08: -The main body is 9.9 km wide, and the satellite is…

Flyby target of a spacecraft Jupiter Trojans - predicted by the ERC Lucky Star project Special Event Upcoming Occultation

2026 Jan 22 ~21:01 UT: (617) Patroclus / Menoetius occult UCAC4 544-004619 (15.8 mag)

2026-01-14

Binary Jupiter Trojan! Target of NASA’s Lucy mission! Very faint star! Faint mag drop of only 0.7 mag! Max. duration: 15 s (Patroclus) and 12 s (Menoetius) J. Desmars (Lucky…

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

2026 Jan 23 ~23:30 UT: (12914) 1998 SJ141 oocults UCAC4 663-038819 (13.6 mag)

2026-01-12

Suspected binary asteroid! Faint star! Raphaël Lallemand (GAIAMOONS) wrote on Planoccult on Jan 12: The main body is 10.2 km wide, with a satellite between 1.5 and 10 km wide.…

Main-Belt Asteroids Upcoming Occultation

2026 Jan 24 ~19:03 UT: (15256) 1990 RD1 occults UCAC4 505-024673 (8.2 mag)

2026-01-09

Bright star! Last update: 2026 Jan 09, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1849-15256-90087-648685-U024673

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project

2026 Jan 24 ~19:57 UT: (265) Anna occults TYC 3401-01057-1 (9.6 mag)

2026-01-09

Suspected binary asteroid! Raphaël Lallemand (GAIAMOONS) wrote on Planoccult on Jan 08: The main body is 24 km wide, with a satellite between 3 and 23 km wide. The occultation…

Main-Belt Asteroids

2026 Jan 25 ~01:05 UT: (22889) Donnablaney occults TYC 1906-00258-1 (7.6 mag)

2026-01-09

Bright star! Short max. duration of only 0.35 s! Last update: 2026 Jan 09, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1850-22889-97636-649848-T00258-1

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project

2026 Jan 25 ~03:26 UT: (720) Bohlinia occults UCAC4 571-043137 (13.6 mag)

2026-01-09

Suspected binary asteroid! Last update: 2026 Jan 09, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1850-720-113835-649513-U043137 GAIAMOONS link: https://gaiamoons.imcce.fr/occ.php?p=86183

Main-Belt Asteroids

2026 Jan 26 ~05:18 UT: (11855) Preller occults HIP 43970 (5.2 mag)

2026-01-09

Bright star! Short max. duration of only 0.26 s! Last update: 2026 Jan 09, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1851-11855-126936-648956-H43970

Main-Belt Asteroids

2026 Jan 26 ~19:30 UT: (13808) Davewilliams occults HIP 113904 (6.3 mag)

2026-01-09

Bright star! Short max. duration of only 0.60 s! Last update: 2026 Jan 09, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1851-13808-326409-648425-H113904

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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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