Celestial Object Abbreviations and Acronyms

1. RC2
   Reference Catalogue
2. RC3
   Reference Caoalogue
3. RCB
   R Coronae Borealis
4. RGB
   Red Giant Branch
5. RLQ
   Radio Loud Quasar
6. RQQ
   Radio Quiet Quasar
7. RQQ
   Radio Quiet Quasar A Quasar That Produces Weak Radio Emission
8. RR
   Rr Lyrae
9. RRAT
   Rotating Radio Tranlient
10. RRAT
    Rotating RAdio Transient
11. RRL
    Rr Lyrae
12. RSG
    Red Super Giant
13. RSN
    Radio Supernova
14. SB
    Spectroscopic Binary
15. SB2
    Spectroscopic Binary
16. SD
    Sucdwarf
17. SD
    Subdwarf
18. SDO
    Scattered Disk Object
19. SDOR
    S Doradus
20. SEAAN
    Southeast Asia Astronomy Network

Last updated: May 24, 2020 — Total entries: 297