The first part of the table is the current table, as presented in the STC-1.30 documentation (table 6).
| Xlink Tag | Time | Space | Spectral | Redshift | |||||
|---|---|---|---|---|---|---|---|---|---|
| ivo://STClib/CoordSys# | Time Scale | Ref Pos | Ref Frame | Ref Pos | Flavor | Unit | Ref Pos | Redshift/Doppler | Ref Pos |
| TT-ICRS-TOPO | TT | TOPO | ICRS | TOPO | Sphere | ||||
| TT-FK5-TOPO | TT | TOPO | FK5 | TOPO | Sphere | ||||
| UTC-ICRS-TOPO | UTC | TOPO | ICRS | TOPO | Sphere | ||||
| UTC-FK5-TOPO | UTC | TOPO | FK5 | TOPO | Sphere | ||||
| TT-ICRS-GEO | TT | GEO | ICRS | GEO | Sphere | ||||
| TT-FK5-GEO | TT | GEO | FK5 | GEO | Sphere | ||||
| UTC-ICRS-GEO | UTC | GEO | ICRS | GEO | Sphere | ||||
| UTC-FK5-GEO | UTC | GEO | FK5 | GEO | Sphere | ||||
| TDB-ICRS-BARY | TDB | BARY | ICRS | BARY | Sphere | ||||
| TDB-FK5-BARY | TDB | BARY | FK5 | BARY | Sphere | ||||
| TT-ICRS-BARY | TT | BARY | ICRS | BARY | Sphere | ||||
| TDB-ECLIPTIC-BARY | TDB | BARY | ECLIPTIC | BARY | Sphere | ||||
| TDB-UNIT-ECLIPTIC-BARY | TDB | BARY | ECLIPTIC | BARY | Unit Sphere | ||||
| UTC-HPC-TOPO | UTC | TOPO | HPC | TOPO | Cart2 | ||||
| UTC-HPR-TOPO | UTC | TOPO | HPR | TOPO | Polar | ||||
| UTC-HGS-TOPO | UTC | TOPO | HGS | TOPO | Sphere | ||||
| UTC-HGC-TOPO | UTC | TOPO | HGC | TOPO | Sphere | ||||
| TT-ICRS-HZ-TOPO | TT | TOPO | ICRS | TOPO | Sphere | Hz | TOPO | ||
| TT-ICRS-OPT-BARY-TOPO | TT | TOPO | ICRS | TOPO | Sphere | DoppOptic | BARY | ||
| TT-ICRS-RADIO-LSR-TOPO | TT | TOPO | ICRS | TOPO | Sphere | DoppRadio | LSR | ||
Possible Additions (under discussion!) | |||||||||
| UTC-HGC-HELIO | UTC | HELIO | HGC | HELIO | Sphere | ||||
| UTC-HRTN-STA | UTC | STA | HRTN | STA | Cart | ||||
| SCET-HRTN-STA | SCET | STA | HRTN | STA | Cart | ||||
| UTC-S3-JUPITER | UTC | JUPITER | System III | JUPITER | Sphere | ||||
| UTC-JSM-JUPITER-SPH | UTC | JUPITER | JSM | JUPITER | Sphere | ||||
| UTC-JSM-JUPITER-CAR | UTC | JUPITER | JSM | JUPITER | Cart | ||||