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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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Upcoming Occultations

2026 Apr 01 ~19:47 UT: Sakamandrios, Satellite of (624) Hektor, occults UCAC4 410-054258 (14.8 mag) 2026 Apr 01 ~19:47 UT: (624) Hektor occults UCAC4 410-054258 (14.8 mag) 2026 Mar 31 ~23:07 UT: (39818) 1997 YR4 occults HIP 66369 (8.6 mag) 2026 Mar 30 ~21:11 UT: (10226) Seishika occults TYC 1361-01955-1 (8.9 mag) 2026 Mar 28 ~19:43 UT: (398) Admete occults UCAC4 563-007913 (10.4 mag)
Asteroid's Satellites - predicted with data from Miriade (LTE / IMCCE) Upcoming Occultation

2026 Apr 01 ~19:47 UT: Sakamandrios, Satellite of (624) Hektor, occults UCAC4 410-054258 (14.8 mag)

2026-03-27
Jupiter Trojans - predicted by the ERC Lucky Star project Upcoming Occultation

2026 Apr 01 ~19:47 UT: (624) Hektor occults UCAC4 410-054258 (14.8 mag)

2026-03-27
Main-Belt Asteroids Upcoming Occultation

2026 Mar 31 ~23:07 UT: (39818) 1997 YR4 occults HIP 66369 (8.6 mag)

2026-03-27
Main-Belt Asteroids Upcoming Occultation

2026 Mar 30 ~21:11 UT: (10226) Seishika occults TYC 1361-01955-1 (8.9 mag)

2026-03-26
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation

2026 Mar 28 ~19:43 UT: (398) Admete occults UCAC4 563-007913 (10.4 mag)

2026-03-26
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  • Past Events
2026 Apr 16 ~00:26 UT: (65803) Didymos occults UCAC4 339-098595 (13.6 mag)
Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team
2026 Apr 16 ~00:26 UT: (65803) Didymos occults UCAC4 339-098595 (13.6 mag)
2026 Apr 15 ~20:10 UT: (266) Aline occults UCAC4 508-028657 (13.2 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators
2026 Apr 15 ~20:10 UT: (266) Aline occults UCAC4 508-028657 (13.2 mag)
2026 Apr 11 ~23:59 UT: (16277) Mallada occults HIP 32044 (7.3 mag)
Main-Belt Asteroids
2026 Apr 11 ~23:59 UT: (16277) Mallada occults HIP 32044 (7.3 mag)
2026 Apr 11 ~22:11 UT: (102) Miriam occults UCAC4 533-041052 (15.9 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators
2026 Apr 11 ~22:11 UT: (102) Miriam occults UCAC4 533-041052 (15.9 mag)
2026 Apr 16 ~00:26 UT: (65803) Didymos occults UCAC4 339-098595 (13.6 mag)
Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team
2026 Apr 16 ~00:26 UT: (65803) Didymos occults UCAC4 339-098595 (13.6 mag)
2026 Mar 30 ~21:11 UT: (10226) Seishika occults TYC 1361-01955-1 (8.9 mag)
Main-Belt Asteroids Upcoming Occultation
2026 Mar 30 ~21:11 UT: (10226) Seishika occults TYC 1361-01955-1 (8.9 mag)
2026 Mar 31 ~23:07 UT: (39818) 1997 YR4 occults HIP 66369 (8.6 mag)
Main-Belt Asteroids Upcoming Occultation
2026 Mar 31 ~23:07 UT: (39818) 1997 YR4 occults HIP 66369 (8.6 mag)
2026 Apr 01 ~19:47 UT: (624) Hektor occults UCAC4 410-054258 (14.8 mag)
Jupiter Trojans - predicted by the ERC Lucky Star project Upcoming Occultation
2026 Apr 01 ~19:47 UT: (624) Hektor occults UCAC4 410-054258 (14.8 mag)
2026 Mar 26 ~23:29 UT: (54071) 2000 GQ146 occults TYC 4415-00544-1 (10.3 mag)
Amor Asteroids Near Earth Asteroids - Call for Observations by the ACROSS Team Past Event
2026 Mar 26 ~23:29 UT: (54071) 2000 GQ146 occults TYC 4415-00544-1 (10.3 mag)
2026 Mar 26 ~18:51 UT: (19111) 1981 EM29 occults HIP 28734 (4.3 mag)
Main-Belt Asteroids Past Event
2026 Mar 26 ~18:51 UT: (19111) 1981 EM29 occults HIP 28734 (4.3 mag)
2026 Mar 26 ~18:05 UT: (266) Aline occults UCAC4 506-022442 (12.0 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Past Event
2026 Mar 26 ~18:05 UT: (266) Aline occults UCAC4 506-022442 (12.0 mag)
2026 Mar 25 ~21:41 UT: (266) Aline occults UCAC4 505-022535(13.9 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Past Event
2026 Mar 25 ~21:41 UT: (266) Aline occults UCAC4 505-022535(13.9 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation

2026 Mar 28 ~19:43 UT: (398) Admete occults UCAC4 563-007913 (10.4 mag)

2026-03-26

Slow-rotating asteroid! Last update: 2026 Mar 26, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1912-398-52814-649414-U007913

Main-Belt Asteroids Upcoming Occultation

2026 Mar 30 ~21:11 UT: (10226) Seishika occults TYC 1361-01955-1 (8.9 mag)

2026-03-26

Bright star! Last update: 2026 Mar 26, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1914-10226-109565-648990-T01955-1

Main-Belt Asteroids Upcoming Occultation

2026 Mar 31 ~23:07 UT: (39818) 1997 YR4 occults HIP 66369 (8.6 mag)

2026-03-27

Bright star! Very short max. duration of only 0.18 s! Last update: 2026 Mar 27, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1915-39818-192665-647807-H66369

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

2026 Apr 01 ~19:47 UT: (624) Hektor occults UCAC4 410-054258 (14.8 mag)

2026-03-27

Jupiter Trojan with satellite! Faint star! Faint mag drop of only 0.6 mag! Last update: 2026 Mar 27, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1916-624-168134-647486-U054258 Prediction of the Lucky Star project (2025 Aug…

Asteroid's Satellites - predicted with data from Miriade (LTE / IMCCE) Upcoming Occultation

2026 Apr 01 ~19:47 UT: Sakamandrios, Satellite of (624) Hektor, occults UCAC4 410-054258 (14.8 mag)

2026-03-27

Jupiter Trojan! Satellite of (624) Hektor! Faint star! Short max. duration of only 0.7 s! Faint mag drop of only 0.6 mag! Last update: 2026 Mar 27

Main-Belt Asteroids

2026 Apr 02 ~20:31 UT: (630) Euphemia occults HIP 48944 (7.8 mag)

2026-03-27

Bright star! Long max. duration of 8.4 s! Last update: 2026 Mar 27, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1917-630-141528-649904-H48944

Main-Belt Asteroids Observation Campaign for Slow Rotators

2026 Apr 02/03 ~23:59 UT: (691) Lehigh occults UCAC4 553-049381 (15.2 mag)

2026-03-28

Slow-rotating asteroid! Very faint star! Faint mag drop of only 0.43 mag! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1918-691-168523-649278-U049381

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project

2026 Apr 03 ~02:20 UT: (30047) 2000 EV35 occults UCAC4 480-054780 (12.8 mag)

2026-03-28

Suspected binary asteroid! Short max. duration of only 0.85 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1918-30047-205189-648361-U054780 GAIAMOONS link: https://gaiamoons.imcce.fr/occ.php?p=110573

Main-Belt Asteroids

2026 Apr 03 ~20:07 UT: (20759) 2000 CX96 occults TYC 0725-01921-1 (7.8 mag)

2026-03-28

Bright star! Short max. duration of 0.39 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1918-20759-86560-648731-T01921-1

Main-Belt Asteroids

2026 Apr 03 ~22:14 UT: (23167) 2000 GL124 occults TYC 1959-01421-1 (8.9 mag)

2026-03-28

Bright star! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1918-23167-136697-649407-T01421-1

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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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