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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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Upcoming Occultations

2026 Sep 22 ~19:49 UT: Alexhelios, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 mag) 2026 Sep 22 ~19:49 UT: (216) Kleopatra occults UCAC4 399-071546 (14.0 mag) 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)
Asteroid's Satellites - predicted with data from Miriade (LTE / IMCCE) Upcoming Occultation

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

2026-09-16
Main-Belt Asteroids Upcoming Occultation

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

2026-09-16
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
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2026 Sep 22 ~19:49 UT: Cleoselene, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 mag)
Asteroid's Satellites - predicted with data from Miriade (LTE / IMCCE)
2026 Sep 22 ~19:49 UT: Cleoselene, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 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 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 22 ~19:49 UT: Cleoselene, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 mag)
Asteroid's Satellites - predicted with data from Miriade (LTE / IMCCE)
2026 Sep 22 ~19:49 UT: Cleoselene, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 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 22 ~19:49 UT: (216) Kleopatra occults UCAC4 399-071546 (14.0 mag)
Main-Belt Asteroids Upcoming Occultation
2026 Sep 22 ~19:49 UT: (216) Kleopatra occults UCAC4 399-071546 (14.0 mag)
2026 Sep 22 ~19:49 UT: Alexhelios, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 mag)
Asteroid's Satellites - predicted with data from Miriade (LTE / IMCCE) Upcoming Occultation
2026 Sep 22 ~19:49 UT: Alexhelios, Satellite of (216) Kleopatra occults UCAC4 399-071546 (14.0 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 Past Event
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 Past Event
2026 Sep 18 ~23:54 UT (12484) 1997 FO3 occults HIP 1545 (7.8 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)
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 Upcoming Occultation

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! You should expect the duration to be shorter than predicted on the map. According to the predicted…

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

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! The path is based on the first orbit solution from…

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

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

2026-09-19

Satellite of (216) Kleopatra! Please note: The path is based on the third orbit solution from MIRIADE. Another solution shows the Cleoselene’s path close to the southern path limit of…

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

Jupiter Trojans - predicted by the ERC Lucky Star project

2026 Sep 25 ~00:14 UT: (2207) Antenor occults UCAC4 533-021773 (14.3 mag)

2026-09-16

Jupiter Trojan! Very faint star! Last update: 2026 Sep 16, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2093-2207-324832-383602-U021773 Prediction of the Lucky Star project (2025 Aug 21): https://lesia.obspm.fr/lucky-star/occ.php?p=155104

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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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