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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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2026 Sep 22 ~18:45 UT: (16393) 1981 QS occults UCAC4 354-111702 (12.9 mag) 2026 Sep 20 ~23:54 UT: (1721) Wells occults J044934.68+404330.8 (8.7 mag) 2026 Sep 19 ~22:07 UT: (16901) Johnbrooks occults UCAC4 360-213834 (12.4 mag) 2026 Sep 19 ~03:43 UT: (1208) Troilus occults UCAC4 650-033359 (14.7 mag) 2026 Sep 18 ~23:54 UT (12484) 1997 FO3 occults HIP 1545 (7.8 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Sep 22 ~18:45 UT: (16393) 1981 QS occults UCAC4 354-111702 (12.9 mag)

2026-09-16
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Sep 20 ~23:54 UT: (1721) Wells occults J044934.68+404330.8 (8.7 mag)

2026-09-11
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Sep 19 ~22:07 UT: (16901) Johnbrooks occults UCAC4 360-213834 (12.4 mag)

2026-09-11
Jupiter Trojans - predicted by the ERC Lucky Star project Upcoming Occultation

2026 Sep 19 ~03:43 UT: (1208) Troilus occults UCAC4 650-033359 (14.7 mag)

2026-09-11
Main-Belt Asteroids Upcoming Occultation

2026 Sep 18 ~23:54 UT (12484) 1997 FO3 occults HIP 1545 (7.8 mag)

2026-09-11
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  • Past Events
2026 Sep 30 ~23:04 UT: (21288) 1996 VW occults TYC 5230-01352-1 (7.0 mag)
Main-Belt Asteroids
2026 Sep 30 ~23:04 UT: (21288) 1996 VW occults TYC 5230-01352-1 (7.0 mag)
2026 Sep 29 ~03:34 UT: (2404) Antarctica occults HIP 41727 (8.2 mag)
Main-Belt Asteroids
2026 Sep 29 ~03:34 UT: (2404) Antarctica occults HIP 41727 (8.2 mag)
2026 Sep 27 ~02:58 UT: (2721) Vsekhsvyatskij occults HIP 23883 (5.7 mag)
Main-Belt Asteroids
2026 Sep 27 ~02:58 UT: (2721) Vsekhsvyatskij occults HIP 23883 (5.7 mag)
2026 Sep 27 ~02:54 UT: (31402) Negishi occults J065345.82+344631.8 (7.9 mag)
Main-Belt Asteroids
2026 Sep 27 ~02:54 UT: (31402) Negishi occults J065345.82+344631.8 (7.9 mag)
2026 Sep 30 ~23:04 UT: (21288) 1996 VW occults TYC 5230-01352-1 (7.0 mag)
Main-Belt Asteroids
2026 Sep 30 ~23:04 UT: (21288) 1996 VW occults TYC 5230-01352-1 (7.0 mag)
2026 Sep 19 ~03:43 UT: (1208) Troilus occults UCAC4 650-033359 (14.7 mag)
Jupiter Trojans - predicted by the ERC Lucky Star project Upcoming Occultation
2026 Sep 19 ~03:43 UT: (1208) Troilus occults UCAC4 650-033359 (14.7 mag)
2026 Sep 19 ~22:07 UT: (16901) Johnbrooks occults UCAC4 360-213834 (12.4 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation
2026 Sep 19 ~22:07 UT: (16901) Johnbrooks occults UCAC4 360-213834 (12.4 mag)
2026 Sep 20 ~23:54 UT: (1721) Wells occults J044934.68+404330.8 (8.7 mag)
Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation
2026 Sep 20 ~23:54 UT: (1721) Wells occults J044934.68+404330.8 (8.7 mag)
2026 Sep 18 ~04:00 UT: (1867) Deiphobus occults UCAC4 629-028903 (14.8 mag)
Jupiter Trojans - predicted by the ERC Lucky Star project Past Event
2026 Sep 18 ~04:00 UT: (1867) Deiphobus occults UCAC4 629-028903 (14.8 mag)
2026 Sep 18 ~01:02 UT: (9142) Rhesus occults UCAC4 503-011677 (15.8 mag)
Jupiter Trojans - predicted by the ERC Lucky Star project Past Event
2026 Sep 18 ~01:02 UT: (9142) Rhesus occults UCAC4 503-011677 (15.8 mag)
2026 Sep 17 ~20:29 UT: (29587) 1998 FR69 occults J184444.55-254753.0 (8.6 mag)
Main-Belt Asteroids Past Event
2026 Sep 17 ~20:29 UT: (29587) 1998 FR69 occults J184444.55-254753.0 (8.6 mag)
2026 Sep 17 ~20:21 UT: (29587) 1998 FR69 occults HIP 91967 (8.2 mag)
Main-Belt Asteroids Past Event
2026 Sep 17 ~20:21 UT: (29587) 1998 FR69 occults HIP 91967 (8.2 mag)
Main-Belt Asteroids Upcoming Occultation

2026 Sep 18 ~23:54 UT (12484) 1997 FO3 occults HIP 1545 (7.8 mag)

2026-09-11

Bright star! Short max. duration of only 0.6 s! Last update: 2026 Sep 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2087-12484-4872-648042-H1545

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

2026 Sep 19 ~03:43 UT: (1208) Troilus occults UCAC4 650-033359 (14.7 mag)

2026-09-11

Jupiter Trojan! Very faint star! Last update: 2026 Sep 12, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2087-1208-307772-467522-U033359 Prediction of the Lucky Star project (2025 Aug 21): https://lesia.obspm.fr/lucky-star/occ.php?p=158394

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Sep 19 ~22:07 UT: (16901) Johnbrooks occults UCAC4 360-213834 (12.4 mag)

2026-09-11

Suspected binary asteroid! Bright star! Short max. duration of only 0.41 s! Raphaël Lallemand (GAIAMOONS) wrote on Planoccult on Sep 03: The main body is 5.4 km wide, with a…

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Sep 20 ~23:54 UT: (1721) Wells occults J044934.68+404330.8 (8.7 mag)

2026-09-11

Bright star! Last update: 2026 Sep 11, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2087-12484-4872-648042-H1545

Main-Belt Asteroids Suspected binary asteroids - GaiaMoons project Upcoming Occultation

2026 Sep 22 ~18:45 UT: (16393) 1981 QS occults UCAC4 354-111702 (12.9 mag)

2026-09-16

Suspected binary asteroid! Short max. duration of only 0.26 s! Last update: 2026 Sep 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2090-16393-252884-646782-U111702 GAIAMOONS: https://gaiamoons.imcce.fr/occ.php?p=124037

Main-Belt Asteroids

2026 Sep 22 ~19:49 UT: (216) Kleopatra occults UCAC4 399-071546 (14.0 mag)

2026-09-16

Asteroid with two satellites! Faint star! Faint mag drop of only 0.25 mag! Last update: 2026 Sep 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2090-216-961761-287247-U071546

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

2026 Sep 22 ~19:49 UT: Alexhelios, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 mag)

2026-09-16

Satellite of (216) Kleopatra! Faint star! Short max. duration of only 0.54 s! Faint mag drop of only 0.25 mag! Last update: 2026 Sep 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2090-216-961761-287247-U071546

Main-Belt Asteroids

2026 Sep 23 ~22:26 UT: (28927) 2000 RA6 occults HIP 18531 (8.6 mag)

2026-09-16

Bright star! Short max. duration of only 0.72 s! Last update: 2026 Sep 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2091-28927-56408-649445-H18531

Main-Belt Asteroids

2026 Sep 24 ~00:36 UT: (24628) 1981 EG3 occults HIP 6554 (8.0 mag)

2026-09-16

Bright star! Short max. duration of only 0.66 s! Last update: 2026 Sep 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2092-24628-77141-403199-H6554

Main-Belt Asteroids

2026 Sep 25 ~00:02 UT: (43225) 2000 AW165 occults UCAC4 379-164884 (8.7 mag)

2026-09-16

Bright star! Short max. duration of only 0.90 s! Last update: 2026 Sep 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2093-43225-316952-647109-U164884

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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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