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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
  • 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

2026 Feb 18 ~20:26 UT: (12914) 1998 SJ141 occults UCAC4 652-031970 (13.0 mag)

2026-01-14

Suspected binary asteroid! Faint star! Last update: 2026 Jan 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1874-12914-78178-650539-U031970 GAIAMOONS link: https://gaiamoons.imcce.fr/occ.php?p=100289

Main-Belt Asteroids

2026 Feb 19 ~18:48 UT: (4890) Shikanosima occults TYC 1882-01417-1 (8.4 mag)

2026-01-14

Bright star! Last update: 2026 Jan 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1875-4890-90662-649541-T01417-1

Main-Belt Asteroids Observation Campaign for Slow Rotators

2026 Feb 20 ~18:00 UT: (903) Nealley occults UCAC4 506-049100 (15.0 mag)

2026-01-14

Slow-rotating asteroid! Very faint star! Faint mag drop of only 0.6 mag! Last update: 2026 Jan 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1876-903-128731-648685-U049100

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)

2026-01-14

Centaur! Very faint star! Last update: 2026 Jan 14, Occult Watcher Cloud https://cloud.occultwatcher.net/event/1876-54598-112865-650244-U041023 Prediction of the Lucky Star project (2025 Aug 24): https://lesia.obspm.fr/lucky-star/occ.php?p=155339

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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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