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.
OccultationPortalLogo
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
06/01/2025 162173 Ryugu UCAC4 340-102410 17 36 21 -22 2 57 12.3 6.1 0.13 Australia image
06/03/2025 162173 Ryugu UCAC4 342-098188 17 32 49 -21 42 0 12.0 6.3 0.14 South America image
06/03/2025 162173 Ryugu UCAC4 342-097746 17 31 58 -21 36 43 13.7 4.6 0.13 Australia image
06/03/2025 162173 Ryugu UCAC4 343-101520 17 31 27 -21 33 53 9.7 8.6 0.13 Australia image
06/06/2025 162173 Ryugu UCAC4 347-098024 17 23 43 -20 47 44 13.3 4.8 0.13 Africa image
06/07/2025 162173 Ryugu UCAC4 347-097610 17 23 11 -20 44 34 13.6 4.5 0.13 North America image
06/07/2025 162173 Ryugu UCAC4 347-096883 17 22 4 -20 37 28 13.2 4.9 0.13 Australia image
06/07/2025 3752 Camillo TYC 3942-01297-1 19 38 11 56 54 30 11.3 7.5 0.22 Japan image
06/08/2025 162173 Ryugu UCAC4 349-095110 17 19 19 -20 20 56 11.3 6.7 0.13 Australia image
06/11/2025 162173 Ryugu UCAC4 352-089039 17 12 15 -19 37 39 12.7 5.3 0.13 Australia image
06/11/2025 162173 Ryugu UCAC4 352-089306 17 12 50 -19 41 36 13.6 4.4 0.13 Japan image
06/15/2025 162173 Ryugu UCAC4 356-085424 17 4 34 -18 50 2 12.3 5.9 0.14 South America image
06/16/2025 7341 1991 VK UCAC4 315-164034 18 14 14 -27 4 51 13.4 7.1 0.11 Europe image
06/16/2025 7341 1991 VK UCAC4 315-163883 18 14 11 -27 4 46 12.2 8.3 0.07 South America image
06/16/2025 162173 Ryugu UCAC4 358-084625 17 2 13 -18 35 20 13.5 4.8 0.14 North America image
06/20/2025 162173 Ryugu UCAC4 362-078895 16 53 38 -17 40 19 12.8 5.8 0.15 North America image
06/21/2025 162173 Ryugu UCAC4 363-079792 16 52 21 -17 31 56 13.2 5.4 0.15 Europe image
06/22/2025 162173 Ryugu TYC 6222-00132-1 16 50 5 -17 16 42 10.4 8.3 0.15 South America image
06/22/2025 7341 1991 VK UCAC4 316-133834 18 4 59 -26 58 28 10.7 9.7 0.07 North America image
06/24/2025 162173 Ryugu UCAC4 366-076552 16 46 37 -16 53 32 9.4 9.4 0.16 South America image
06/24/2025 3752 Camillo UCAC4 733-062700 19 2 34 56 28 34 13.2 5.4 0.16 Japan image
06/25/2025 162173 Ryugu UCAC4 367-075628 16 45 15 -16 44 12 12.5 6.3 0.16 South America image
06/26/2025 7341 1991 VK UCAC4 316-125904 17 59 15 -26 52 38 11.8 8.7 0.08 South America image
07/02/2025 2100 Ra-Shalom UCAC4 791-016363 5 43 11 68 4 8 13.6 4.5 0.26 Europe image
07/03/2025 2100 Ra-Shalom UCAC4 792-016330 5 41 42 68 23 27 13.4 4.7 0.26 North America image
07/06/2025 2100 Ra-Shalom TYC 4351-00936-1 5 22 5 71 49 44 10.8 7.0 0.27 Europe image
07/07/2025 2100 Ra-Shalom UCAC4 810-014324 5 21 5 71 59 5 13.6 4.1 0.27 Europe image
07/07/2025 3752 Camillo UCAC4 719-059556 18 31 59 53 36 22 13.5 5.1 0.13 Europe image
07/08/2025 2100 Ra-Shalom UCAC4 817-011637 5 11 47 73 13 4 13.3 4.3 0.28 North America image
07/12/2025 2100 Ra-Shalom UCAC4 838-006406 4 23 20 77 26 31 13.7 3.5 0.28 Europe image
07/15/2025 2100 Ra-Shalom UCAC4 850-004242 3 30 22 79 49 27 13.3 3.6 0.28 Europe image
07/17/2025 2100 Ra-Shalom UCAC4 854-003223 2 58 19 80 40 35 12.2 4.6 0.28 North America image
07/20/2025 2100 Ra-Shalom UCAC4 859-001292 1 29 37 81 46 20 13.2 3.4 0.28 Europe image
07/22/2025 2100 Ra-Shalom UCAC4 859-000167 0 10 57 81 38 25 13.3 3.1 0.27 Europe image
07/23/2025 2100 Ra-Shalom TYC 4613-01079-1 23 6 21 80 43 11 11.7 4.5 0.27 Europe image
07/24/2025 3200 Phaethon TYC 2364-01273-1 3 51 0 35 29 26 12.0 6.7 0.3 North America image
07/24/2025 2100 Ra-Shalom UCAC4 853-015853 22 54 49 80 27 42 12.0 4.2 0.26 North America image
07/26/2025 2100 Ra-Shalom UCAC4 844-017358 22 2 39 78 39 12 12.7 3.3 0.26 North America image
07/26/2025 16 Psyche UCAC4 542-008216 4 6 11 18 12 21 11.9 0.6 7.66 Australia image
07/28/2025 2100 Ra-Shalom UCAC4 831-020346 21 22 2 76 8 43 13.4 2.6 0.25 North America image
07/30/2025 2100 Ra-Shalom HIP 102933 20 51 16 72 56 53 8.2 7.5 0.24 Japan image
07/31/2025 2100 Ra-Shalom UCAC4 811-028712 20 45 15 72 7 37 13.4 2.3 0.24 Europe image
07/31/2025 2100 Ra-Shalom TYC 4455-00496-1 20 42 46 71 45 29 10.7 4.9 0.24 North America image

 

 

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