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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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Upcoming Occultations

2026 Jun 21 ~21:30 UT: (13517) 1990 UU1 occults HIP 92466 (7.5 mag) 2026 Jun 21 ~00:53 UT: (50000) Quaoar occults UCAC4 377-136950 (14.7 mag) 2026 Jun 21 ~00:23 UT: (28978) Ixion occults UCAC4 288-196042 (15.4 mag) 2026 Jun 17 ~21:05 UT: (19698) 1999 SR4 occults HIP 91796 (8.1 mag) 2026 Jun 16 ~21:03 UT: (65803) Didymos occults UCAC4 337-081684 (10.9 mag)
Main-Belt Asteroids Upcoming Occultation

2026 Jun 21 ~21:30 UT: (13517) 1990 UU1 occults HIP 92466 (7.5 mag)

2026-06-06
Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project Upcoming Occultation

2026 Jun 21 ~00:53 UT: (50000) Quaoar occults UCAC4 377-136950 (14.7 mag)

2026-06-06
Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project Upcoming Occultation

2026 Jun 21 ~00:23 UT: (28978) Ixion occults UCAC4 288-196042 (15.4 mag)

2026-06-06
Main-Belt Asteroids Upcoming Occultation

2026 Jun 17 ~21:05 UT: (19698) 1999 SR4 occults HIP 91796 (8.1 mag)

2026-06-06
Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team Special Event Upcoming Occultation

2026 Jun 16 ~21:03 UT: (65803) Didymos occults UCAC4 337-081684 (10.9 mag)

2026-05-25
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  • Past Events
2026 Jun 30 ~21:07 UT: (10261) Nikdollezhal’ occults UCAC4 279-080818 (8.6 mag)
Main-Belt Asteroids
2026 Jun 30 ~21:07 UT: (10261) Nikdollezhal’ occults UCAC4 279-080818 (8.6 mag)
2026 Jun 29 ~01:09 UT: (19533) Garrison occults TYC 0603-01046-1 (8.5 mag)
Main-Belt Asteroids
2026 Jun 29 ~01:09 UT: (19533) Garrison occults TYC 0603-01046-1 (8.5 mag)
2026 Jun 26 ~02:55 UT: (34156) Gopalakrishnan occults HIP 13824 (6.6 mag)
Main-Belt Asteroids
2026 Jun 26 ~02:55 UT: (34156) Gopalakrishnan occults HIP 13824 (6.6 mag)
2026 Jun 25 ~23:25 UT: (3805) Goldreich occults HIP 86014 (8.6 mag)
Main-Belt Asteroids
2026 Jun 25 ~23:25 UT: (3805) Goldreich occults HIP 86014 (8.6 mag)
2026 Jun 30 ~21:07 UT: (10261) Nikdollezhal’ occults UCAC4 279-080818 (8.6 mag)
Main-Belt Asteroids
2026 Jun 30 ~21:07 UT: (10261) Nikdollezhal’ occults UCAC4 279-080818 (8.6 mag)
2026 Jun 17 ~21:05 UT: (19698) 1999 SR4 occults HIP 91796 (8.1 mag)
Main-Belt Asteroids Upcoming Occultation
2026 Jun 17 ~21:05 UT: (19698) 1999 SR4 occults HIP 91796 (8.1 mag)
2026 Jun 21 ~00:23 UT: (28978) Ixion occults UCAC4 288-196042 (15.4 mag)
Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project Upcoming Occultation
2026 Jun 21 ~00:23 UT: (28978) Ixion occults UCAC4 288-196042 (15.4 mag)
2026 Jun 21 ~00:53 UT: (50000) Quaoar occults UCAC4 377-136950 (14.7 mag)
Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project Upcoming Occultation
2026 Jun 21 ~00:53 UT: (50000) Quaoar occults UCAC4 377-136950 (14.7 mag)
2026 Jun 14 ~22:29 UT: (95802) Francismuir occults UCAC4 340-112572 (12.5 mag)
Main-Belt Asteroids Near Earth Asteroids - Call for Observations by the ACROSS Team Past Event
2026 Jun 14 ~22:29 UT: (95802) Francismuir occults UCAC4 340-112572 (12.5 mag)
2026 Jun 14 ~00:57 UT: (3383) Koyama occults HIP 85418 (8.1 mag)
Main-Belt Asteroids Past Event
2026 Jun 14 ~00:57 UT: (3383) Koyama occults HIP 85418 (8.1 mag)
2026 Jun 13 ~23:06 UT: (269) Justitia occults UCAC4 411-059785 (14.7 mag)
Main-Belt Asteroids Observation Campaign for Slow Rotators Past Event
2026 Jun 13 ~23:06 UT: (269) Justitia occults UCAC4 411-059785 (14.7 mag)
2026 Jun 12 ~00:07 UT: (19093) 1979 MM3 occults TYC 1443-00579-1 (8.8 mag)
Main-Belt Asteroids Past Event
2026 Jun 12 ~00:07 UT: (19093) 1979 MM3 occults TYC 1443-00579-1 (8.8 mag)
Flyby target of a spacecraft Near Earth Asteroids - Call for Observations by the ACROSS Team Special Event Upcoming Occultation

2026 Jun 16 ~21:03 UT: (65803) Didymos occults UCAC4 337-081684 (10.9 mag)

2026-05-25

Apollo asteroid! Target of the DART and HERA missions! Extreme short max. duration of only 0.07 s! Last update: 2026 May 25, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1992-65803-235029-646569-U081684

Main-Belt Asteroids Upcoming Occultation

2026 Jun 17 ~21:05 UT: (19698) 1999 SR4 occults HIP 91796 (8.1 mag)

2026-06-06

Bright star! Short max. duration of only 0.75 s! Last update: 2026 Jun 06, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1993-19698-264963-647425-H91796

Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project Upcoming Occultation

2026 Jun 21 ~00:23 UT: (28978) Ixion occults UCAC4 288-196042 (15.4 mag)

2026-06-06

TNO! Very faint star! Long max. duration of 27 s! Extended error limits! Read about (28978) Ixion in Journal for Occultation Astronomy 2018-02: https://www.iota-es.de/JOA/JOA2018_2.pdf Last update: 2026 Jun 06, Occult…

Trans-Neptunian Objects, Cubewanos and Centaurs - Predicted by the ERC Lucky Star project Upcoming Occultation

2026 Jun 21 ~00:53 UT: (50000) Quaoar occults UCAC4 377-136950 (14.7 mag)

2026-06-06

TNO! Asteroid has two rings and a satellite! Very faint star! Long max. duration of 46 s! Read about (50000) Quaoar in Journal for Occultation Astronomy 2020-01: https://www.iota-es.de/JOA/JOA2020_1.pdf Last update:…

Main-Belt Asteroids Upcoming Occultation

2026 Jun 21 ~21:30 UT: (13517) 1990 UU1 occults HIP 92466 (7.5 mag)

2026-06-06

Bright star! Short max. duration of only 0.48 s! Last update: 2026 Jun 06, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/1997-13517-266730-647979-H92466

Main-Belt Asteroids

2026 Jun 24 ~19:54 UT: (38292) 1999 RA77 occults HIP 59134 (7.2 mag)

2026-06-14

Bright star! Short max. duration of only 0.85 s! Last update: 2026 Jun 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2000-38292-171745-648274-H59134

Main-Belt Asteroids

2026 Jun 24 ~22:09 UT: (299) Thora occults TYC 6306-01919-1 (9.0 mag)

2026-06-14

Bright star! Last update: 2026 Jun 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2000-299-277385-646761-T01919-1

Main-Belt Asteroids

2026 Jun 25 ~21:23 UT: (15587) Sotsukamoto occults TYC 5548-00408-1 (9.0 mag)

2026-06-14

Bright star! Short max. duration of only 0.69 s! Last update: 2026 Jun 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2001-15587-190550-647322-T00408-1

Main-Belt Asteroids

2026 Jun 25 ~23:21 UT: (10159) Tokara occults HIP 70680 (6.2 mag)

2026-06-14

Bright star! Short max. duration of only 0.89 s! RUWE 4.1: Path shift possible. Observe outside of the path as well. Last update: 2026 Jun 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2001-10159-204711-647608-H70680

Main-Belt Asteroids

2026 Jun 25 ~23:25 UT: (3805) Goldreich occults HIP 86014 (8.6 mag)

2026-06-14

Bright star! Last update: 2026 Jun 14, Occult Watcher Cloud: https://cloud.occultwatcher.net/event/2001-3805-248944-645718-H86014

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IOTA/ES - Call for Observations

International Occultation Timing Association / European Section e.V.

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