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Version 241106

• Added Dambis (1999).

Version 241102

• Added NGC 5999 in FERREIRA19 that was not included in the initial release
• Removed plx column that I added to SIM19 in the initial version of the UCC and it’s not part of the original dataset

Version 241101

• Added Cavallo et al. (2024).

Version 240511

• Added Donor et al. (2020).

Version 240304

• Added Koposov et al. (2008).
• Added Bossini et al. (2019).

Version 240207

• Fixed Issue 12

Added new OC Casado-Hendy 1.

• Fixed Issue 41

Added Perren et al. (2022).

Version 231105

• Fixed Issue 32

The original Santos-Silva et al. (2021) database used only included the five new OCs. The new database used contains the 15 OCs listed in Table 2 of the article.

• Fixed Issue 31

Updated Hunt & Reffert database to include Theia objects labeled as OCs.

• Fixed Issue 30

Add + sign to the declination for the CDS search coordinates.

Version 231025

• Fixed Issue 1

Added He et al. (2023) database.

• Fixed Issue 28

The duplicate probabilities using membership data are now properly estimated.

Version 231020

• Fixed Issue 24

The original table JAEHNIG21 (taken from the PDF) only contained the 11 newly discovered candidate OCs. The new table from CDS contains info on the 431 OCs.

• New OC added –> Pismis 24
• Markarian 18 –> Added Collinder 205 to the naming
• NGC 1976 –> Trapezium
• NGC 2451 –> NGC 2451B (correct OC given the coordinates)

• Removed Berkeley 42 –> GC NGC 6749

• Fixed Issue 18

Melotte 20: added Collinder 39 to KHARCHENKO12

• Fixed Issue 25

Changed the name of 91 OCs in LOKTIN17 to add a space before the numbering

Version 231017

• Fixed Issue 23

1. Removed entries for Trapezium-FG (DIAS21), NGC1976 (LOKTIN17), and OC 0345 (HAO22) from the (old) UCC database
2. LOKTIN17: NGC 1976 –> Trapezium (NGC 1976 is the designation for the nebula)
3. DIAS21: Trapezium-FG –> Trapezium, Ori Trapezium
4. Re-generate entries for: Trapezium and OC 0345

• Fixed Issue 17

1. Removed entries for NGC 2421 and NGC 2215 from the (old) UCC database
2. In LOKTIN17: Melotte 67 & Melotte 45 –> Messier 67 & Messier 45
3. Re-generate entries for: NGC 2421, NGC 2682, NGC 2215, Pleiades (Melotte 22)

Version 230810

Initial release of the catalogue, accompanied with the article published in MNRAS.