Détails

Event predictions

This page presents a selection of "best" events.  These are also available through the Occultation Portal. 

Please check Occult Watcher Cloud, for details and updates, in the specific feed of the ACROSS campaign.
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Here below you can find predictions for events by:

  • The asteroid (65 803) Didymos. This is the main target of ACROSS, and the target of the DART/Hera first planetary defence missions.
  • OWC Logo The 9 potential secondary targets of Hera (ESA) in the next 5 years: (29 886) Randytung, (42 532) 1995 OR, (54 212) 2000 HJ89, (88 992)  2001 TJ72, (95 802) Francismuir, (122 764) 2000 SX69, (169 549) 2002 EG105, (188  708) 2005 TR99 and (477 416) 2009 WW1. 
  • NEAs with orbits that allow predictions with a decent probability of success, with a list of about 30 NEAs chosen according to their orbital quality (σa < 1e-9 au), size (D > 0.5 km) and presence in the Gaia DR3 database.

For each group, a table and images are published for the most accessible events in the following two months, and files with the full list of predicted events in XML format (produced by Occult) are shared at the end. It should be noted that, due to the low number of restrictions we apply in the XML files, they may have more than 20 000 events, in particular the general NEA files. 20 000 is the standard limit of events for Occult, as it claims that the processes involving a larger amount of events can slow down significantly. However, it is possible to raise this limit up to 100 000, the maximum Occult allows. To do that, it is necessary to enter the "Maintenance" section, choose "User Settings", go to "11. Asteroid occultations - Search and Display", where you can edit the limit. If necessary, the team can also provide smaller files upon request, for those who choose to keep this limit.

 

By accessible, we mean events with:

- Star Magnitude (Mv) <= 14.0;

- Maximum Duration (s) >= 0.2 (for the general NEA only);

- Path crosses significant amount of landmass on Earth's surface (not just oceans);

- Solar Elongation >= 45º;

- For the more general NEA events only, whether the path uncertainty is less than 5x the object's Diameter.

 

The tables have the essential information of each event: date, target asteroid's permanent number and name, target star's catalogue name and number, RA/Dec coordinates and Mv magnitude, and quantities related to the event, such as expected drop (in magnitudes), maximum duration (in seconds) and the general area of the globe where the event is visible. Also contained the Occu;t Map for every event. For the most promising Didymos events (red lines) and when requested by observers, the last column holds the .kmz file of the event with the predicted path and the topographic corrections applied.   

 

IMPORTANT: The .xml tables are only propagated once for the whole month for simplicity, while all the events displayed here and in OWC have been propagated to the date of occultation. So the maps in the xml and these images may not match perfectly. If you are insterested in observing an event not included in OWC or this website, please contact the ACROSS team, in order to have access to the most precise map we can get for it.

Interesting events in the near future

Didymos

 There are not any viable events by (65803) Didymos at the moment.  

 

Other Didymos events  for June-July in  XML format for Occult ( ~300 in total).

 

See dedicated page for the event on January 21-22, 2023 !

Potential Hera secondary Targets

 

 There are not any worth mentioning events by the potential Hera targets at the moment.

 

Other Hera events  for June-July in  XML format for Occult ( ~400 in total).

 

 

Other NEAs

 

 

DateAsteroidStarRADecConditionsZoneImage
NumberNameCatalogueNumberhmsdmsMvDropDuration
02/05/2026 1620 Geographos TYC 2952-00187-1 7 18 45 43 5 41 10.7 4.7 0.2 Europe image
02/05/2026 1943 Anteros UCAC4 355-056844 9 40 39 -19 10 24 12.9 2.6 0.43 North America image
02/07/2026 35107 1991 VH TYC 0739-00106-1 6 16 48 13 0 31 11.0 5.5 0.12 Europe image
02/08/2026 16 Psyche UCAC4 544-009907 4 37 33 18 45 30 14.7 0.0 34.91 Australia image
02/10/2026 35107 1991 VH UCAC4 525-024554 6 17 27 14 52 19 11.5 5.2 0.12 Australia image
02/10/2026 35107 1991 VH TYC 0743-00023-1 6 17 27 14 53 12 9.8 6.8 0.12 Australia image
02/11/2026 1943 Anteros TYC 6042-00543-1 9 31 47 -21 35 29 11.2 4.0 0.46 Japan image
02/11/2026 35107 1991 VH UCAC4 529-024266 6 17 56 15 42 48 8.2 8.5 0.12 Europe -
02/12/2026 4486 Mithra TYC 1884-01060-1 6 37 51 25 41 25 10.4 8.9 0.15 Europe image
02/12/2026 35107 1991 VH TYC 1315-01363-1 6 18 0 15 49 30 11.6 5.1 0.13 Europe image
02/15/2026 25330 1999 KV4 TYC 5057-00921-1 16 44 33 -4 11 19 10.8 7.4 0.24 North America image
02/17/2026 1943 Anteros UCAC4 333-058185 9 22 9 -23 29 14 11.8 3.2 0.5 Australia image
02/17/2026 1620 Geographos J 064357.49+382920.7 6 43 57 38 29 21 9.0 6.7 0.42 Europe image
02/21/2026 35107 1991 VH UCAC4 555-027116 6 24 34 20 57 41 10.5 6.7 0.13 South America image
02/21/2026 1943 Anteros TYC 6591-00599-1 9 15 19 -24 31 41 9.4 5.5 0.54 Australia image
02/22/2026 1620 Geographos TYC 2447-00035-1 6 36 29 36 41 7 10.2 5.6 0.25 Europe image
02/26/2026 35107 1991 VH UCAC4 568-029061 6 30 55 23 27 29 8.2 9.2 0.27 Australia image
02/26/2026 1943 Anteros UCAC4 323-057158 9 6 36 -25 33 37 13.8 1.4 0.61 Japan image
02/28/2026 1036 Ganymed UCAC4 364-050357 8 56 3 -17 13 10 12.7 2.6 1.9 Australia image
03/01/2026 1943 Anteros UCAC4 320-056781 9 1 39 -26 1 14 12.1 2.8 0.66 Australia image
03/02/2026 1943 Anteros UCAC4 320-056619 8 59 56 -26 9 16 12.6 2.4 0.68 Australia image
03/03/2026 1943 Anteros UCAC4 319-055426 8 58 41 -26 15 14 12.2 2.7 0.7 North America image
03/03/2026 1943 Anteros UCAC4 319-055334 8 58 3 -26 17 37 13.7 1.4 0.71 Australia image
03/04/2026 16 Psyche UCAC4 550-011790 4 53 30 19 48 56 15.2 0.0 14.72 North America image
03/06/2026 35107 1991 VH TYC 1901-00317-1 6 42 30 26 19 32 11.0 6.7 0.12 Japan image
03/07/2026 4486 Mithra UCAC4 580-027255 6 22 33 25 48 54 13.7 5.9 0.83 North America image
03/07/2026 1943 Anteros UCAC4 317-053853 8 51 43 -26 38 54 13.7 1.4 0.83 Australia image
03/08/2026 1943 Anteros UCAC4 317-053716 8 51 4 -26 40 43 12.1 2.7 0.84 South America image
03/08/2026 1943 Anteros UCAC4 317-053557 8 50 22 -26 42 6 13.6 1.5 0.86 Australia image
03/09/2026 35107 1991 VH UCAC4 587-034127 6 47 56 27 16 54 11.8 6.0 0.12 Australia image
03/09/2026 1620 Geographos UCAC4 600-032862 6 24 51 29 58 10 11.8 4.4 0.29 Australia image
03/09/2026 1943 Anteros UCAC4 317-053226 8 48 41 -26 45 27 13.5 1.5 0.91 Europe image
03/12/2026 1943 Anteros UCAC4 316-053284 8 44 48 -26 49 26 13.8 1.3 1.05 Australia image
03/12/2026 1943 Anteros UCAC4 316-053251 8 44 40 -26 49 56 12.2 2.7 1.05 Japan image
03/13/2026 1036 Ganymed UCAC4 374-052869 8 48 41 -15 23 54 14.3 1.3 2.06 Europe image
03/15/2026 1943 Anteros UCAC4 317-051669 8 41 12 -26 47 36 12.7 2.2 1.26 Australia image
03/17/2026 1943 Anteros UCAC4 317-051332 8 39 44 -26 44 52 12.8 2.1 1.38 South America image
03/17/2026 137170 1999 HF1 UCAC4 465-111023 19 43 8 2 56 15 11.4 5.8 0.12 Australia image
03/20/2026 16 Psyche UCAC4 553-013033 5 10 41 20 33 11 13.8 0.1 10.7 Europe image
03/26/2026 54071 2000 GQ146 TYC 4415-00544-1 15 28 13 70 23 25 10.3 6.7 0.15 Europe image

 

 

Other NEA targets' events for June-Julyin XML format for Occult (>10000 in total, caution with Occult limit!).