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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 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
  • New Predictions
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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

2026 Apr 04 ~19:12 UT: (1108) Demeter occults HIP 35705 (7.4 mag)

2026-03-28

Bright star! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1919-1108-104457-647647-H35705

Main-Belt Asteroids

2026 Apr 05 ~22:38 UT: (30554) 2001 OP57 occults TYC 5595-00723-1 (9.0 mag)

2026-03-28

Bright star! Short max. duration of 0.37 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1920-30554-218743-647418-T00723-1

Main-Belt Asteroids

2026 Apr 08 ~19:13 UT: (49304) 1998 VT9 occults HIP 63634 (8.8 mag)

2026-03-28

Bright star! Short max. duration of 0.30 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1923-49304-184706-647700-H63634

Main-Belt Asteroids

2026 Apr 08 ~23:37 UT: (15010) 1998 QL92 occults HIP 75858 (8.4 mag)

2026-03-28

Bright star! Short max. duration of 0.58 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1923-15010-219418-646936-H75858

Main-Belt Asteroids

2026 Apr 10 ~19:15 UT: (8779) 1971 UH1 occults HIP 63496 (8.1 mag)

2026-03-28

Bright star! Short max. duration of 0.45 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1925-8779-184261-647830-H63496

Main-Belt Asteroids Observation Campaign for Slow Rotators

2026 Apr 11 ~20:21 UT: (266) Aline occults UCAC4 508-027405 (15.6 mag)

2026-03-28

Slow-rotating asteroid! Very faint star! Faint mag drop of only 0.27 mag! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1926-266-92758-648715-U027405

Main-Belt Asteroids Observation Campaign for Slow Rotators

2026 Apr 11 ~22:11 UT: (102) Miriam occults UCAC4 533-041052 (15.9 mag)

2026-03-28

Slow-rotating asteroid! Very faint star! Faint mag drop of only 0.34 mag! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1926-102-105133-649039-U041052

Main-Belt Asteroids

2026 Apr 11 ~23:59 UT: (16277) Mallada occults HIP 32044 (7.3 mag)

2026-03-28

Bright star! Short max. duration of 0.64 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1926-16277-95038-649700-H32044

Main-Belt Asteroids Observation Campaign for Slow Rotators

2026 Apr 15 ~20:10 UT: (266) Aline occults UCAC4 508-028657 (13.2 mag)

2026-03-28

Slow-rotating asteroid! Faint star! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1930-266-93867-648719-U028657

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)

2026-03-28

Apollo asteroid! Target of the DART and HERA missions! Short max. duration of only 0.35 s! Last update: 2026 Mar 28, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1931-65803-249472-646601-U098595

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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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