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IOTA/ES – Call for Observations

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
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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

2026 Feb 03 ~21:54 UT: (105449) 2000 QA191 occults UCAC4 500-012637 (12.6 mag)

2026-01-11

Suspected binary asteroid! Short max. duration of only 0.26 s! Last update: 2026 Jan 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1859-105449-77719-648620-U012637 GAIAMOONS link: https://gaiamoons.imcce.fr/occ.php?p=90162

Main-Belt Asteroids

2026 Feb 04 ~05:01 UT: (1778) Alfven occults HIP 86819 (6.7 mag)

2026-01-11

Bright star! Short max. duration of only 0.54 s! Last update: 2026 Jan 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1860-1778-251162-646605-H86819

Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project

2026 Feb 06 ~01:54 UT: (468861) 2013 LU28 occults UCAC4 553-021276 (14.7 mag)

2026-01-11

Centaur! Very faint star! 1-sigma error limits cover large parts of Europe! Last update: 2026 Jan 11, Occult Watcher Cloud https://cloud.occultwatcher.net/event/1862-468861-84910-649291-U021276 Prediction of the Lucky Star project (2026 Jan 09):…

Main-Belt Asteroids

2026 Feb 06 ~04:04 UT: (9185) 1991 PX17 occults HIP 77435 (6.7 mag)

2026-01-11

Bright star! Short max. duration of only 0.18 s! Last update: 2026 Jan 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1862-9185-223838-646497-H77435

Jupiter Trojans - predicted by the ERC Lucky Star project

2026 Feb 06 ~21:21 UT: (1208) Troilus occults UCAC4 565-005638 (16.0 mag)

2026-01-11

Jupiter Trojan! Very faint star! Last update: 2026 Jan 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1862-1208-40286-649447-U005638 Prediction of the Lucky Star project (2025 Aug 21): https://lesia.obspm.fr/lucky-star/occ.php?p=158304

Main-Belt Asteroids

2026 Feb 06 ~22:14 UT: (22972) 1999 VR12 occults HIP 11319 (7.6 mag)

2026-01-11

Bright star! Short max. duration of only 0.47 s! Last update: 2026 Jan 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1862-22972-34659-648668-H11319

Main-Belt Asteroids

2026 Feb 06 ~23:43 UT: (20710) 1999 XP10 occults TYC 1247-00213-1 (7.8 mag)

2026-01-11

Bright star! Short max. duration of only 0.61 s! Last update: 2026 Jan 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1862-20710-52287-649409-T00213-1

Main-Belt Asteroids

2026 Feb 07 ~03:35 UT: (9853) l’Epee occults HIP 86838 (8.7 mag)

2026-01-12

Bright star! Short max. duration of only 0.33 s! Last update: 2026 Jan 12, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1863-9853-251179-647448-H86838

Main-Belt Asteroids

2026 Feb 07 ~22:17 UT: (6607) Matsushima occults UCAC4 519-005035 (8.7 mag)

2026-01-12

Bright star! Short max. duration of only 0.39 s! Last update: 2026 Jan 12, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1863-6607-44126-648868-U005035

Main-Belt Asteroids

2026 Feb 08 ~04:52 UT: (8944) Ortigara occults HIP 86778 (8.1 mag)

2026-01-12

Bright star! Short max. duration of only 0.24 s! Last update: 2026 Jan 12, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1864-8944-251056-646569-H86778

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IOTA/ES – Call for Observations

IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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