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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 17 ~22:36 UT: (16757) Luoxiahong occults HIP 33358 (6.5 mag) 2025 Apr 17 ~21:15 UT: (309) Fraternitas occults UCAC4 383-065030 (14.6 mag) 2026 Apr 17 ~19:25 UT: (6514) Torahiko occults UCAC4 526-013143 (8.9 mag) 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 Upcoming Occultation

2026 Apr 17 ~22:36 UT: (16757) Luoxiahong occults HIP 33358 (6.5 mag)

2026-04-02
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation

2025 Apr 17 ~21:15 UT: (309) Fraternitas occults UCAC4 383-065030 (14.6 mag)

2026-04-02
Main-Belt Asteroids Upcoming Occultation

2026 Apr 17 ~19:25 UT: (6514) Torahiko occults UCAC4 526-013143 (8.9 mag)

2026-04-02
Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team Upcoming Occultation

2026 Apr 16 ~00:26 UT: (65803) Didymos occults UCAC4 339-098595 (13.6 mag)

2026-03-28
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation

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

2026-03-28
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  • Past Events
2026 Apr 22 ~23:12 UT: (41060) 1999 VB28 occults UCAC4 561-040778 (8.8 mag)
Main-Belt Asteroids
2026 Apr 22 ~23:12 UT: (41060) 1999 VB28 occults UCAC4 561-040778 (8.8 mag)
2026 Apr 22 ~01:54 UT: (18655) 1998 FS26 occults UCAC4 418-116215 (13.0 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project
2026 Apr 22 ~01:54 UT: (18655) 1998 FS26 occults UCAC4 418-116215 (13.0 mag)
2026 Apr 21 ~22:21 UT: (38950) 2000 ST295 occults HIP 67903 (8.7 mag)
Main-Belt Asteroids
2026 Apr 21 ~22:21 UT: (38950) 2000 ST295 occults HIP 67903 (8.7 mag)
2026 Apr 20 ~23:20 UT: (1668) Hanna occults HIP 68301 (9.0 mag)
Main-Belt Asteroids
2026 Apr 20 ~23:20 UT: (1668) Hanna occults HIP 68301 (9.0 mag)
2026 Apr 22 ~23:12 UT: (41060) 1999 VB28 occults UCAC4 561-040778 (8.8 mag)
Main-Belt Asteroids
2026 Apr 22 ~23:12 UT: (41060) 1999 VB28 occults UCAC4 561-040778 (8.8 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 Upcoming Occultation
2026 Apr 16 ~00:26 UT: (65803) Didymos occults UCAC4 339-098595 (13.6 mag)
2026 Apr 17 ~19:25 UT: (6514) Torahiko occults UCAC4 526-013143 (8.9 mag)
Main-Belt Asteroids Upcoming Occultation
2026 Apr 17 ~19:25 UT: (6514) Torahiko occults UCAC4 526-013143 (8.9 mag)
2025 Apr 17 ~21:15 UT: (309) Fraternitas occults UCAC4 383-065030 (14.6 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation
2025 Apr 17 ~21:15 UT: (309) Fraternitas occults UCAC4 383-065030 (14.6 mag)
2026 Apr 12 ~00:11 UT: (P5M44) Kallichore occults UCAC4 561-040971 (12.5 mag)
Flyby target of a spacecraft Past Event Planetary Moons Special Event
2026 Apr 12 ~00:11 UT: (P5M44) Kallichore occults UCAC4 561-040971 (12.5 mag)
2026 Apr 11 ~23:59 UT: (16277) Mallada occults HIP 32044 (7.3 mag)
Main-Belt Asteroids Past Event
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 Past Event
2026 Apr 11 ~22:11 UT: (102) Miriam occults UCAC4 533-041052 (15.9 mag)
2026 Apr 11 ~20:21 UT: (266) Aline occults UCAC4 508-027405 (15.6 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Past Event
2026 Apr 11 ~20:21 UT: (266) Aline occults UCAC4 508-027405 (15.6 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation

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 Upcoming Occultation

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

Main-Belt Asteroids Upcoming Occultation

2026 Apr 17 ~19:25 UT: (6514) Torahiko occults UCAC4 526-013143 (8.9 mag)

2026-04-02

Bright star! Short max. duration of 0.25 s! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1932-6514-77205-648952-U013143

Main-Belt Asteroids Observation Campaign for Slow Rotators Upcoming Occultation

2025 Apr 17 ~21:15 UT: (309) Fraternitas occults UCAC4 383-065030 (14.6 mag)

2026-04-02

Slow-rotating asteroid! Faint star! Faint mag drop of only 0.7 mag! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1932-309-192876-647149-U065030

Main-Belt Asteroids Upcoming Occultation

2026 Apr 17 ~22:36 UT: (16757) Luoxiahong occults HIP 33358 (6.5 mag)

2026-04-02

Bright star! Short max. duration of 0.27 s! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1932-16757-98443-649112-H33358

Main-Belt Asteroids

2026 Apr 20 ~20:33 UT: (18529) 1996 WK3 occults TYC 1337-01738-1 (8.0 mag)

2026-04-02

Bright star! Very short max. duration of 0.13 s! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1935-18529-94119-649220-T01738-1

Main-Belt Asteroids

2025 Apr 20 ~21:24 UT: (40966) 1999 TM250 occults TYC 1301-00068-1 (8.9 mag)

2026-04-02

Bright star! Short max. duration of 0.24 s! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1935-40966-77944-649114-T00068-1

Main-Belt Asteroids

2026 Apr 20 ~23:20 UT: (1668) Hanna occults HIP 68301 (9.0 mag)

2026-04-02

Bright star! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1935-1668-197991-647579-H68301

Main-Belt Asteroids

2026 Apr 21 ~22:21 UT: (38950) 2000 ST295 occults HIP 67903 (8.7 mag)

2026-04-02

Bright star! Short max. duration of 0.35 s! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1936-38950-196960-646610-H67903

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project

2026 Apr 22 ~01:54 UT: (18655) 1998 FS26 occults UCAC4 418-116215 (13.0 mag)

2026-04-02

Suspected binary asteroid! Short max. duration of only 0.48 s! Last update: 2026 Apr 02, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1937-18655-268578-647591-U116215 GAIAMOONS link: https://gaiamoons.imcce.fr/occ.php?p=109689

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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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