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Table 27
Spectral reference systems.
| Value | Definition |
|
|
|
| TOPOCENT | Topocentric |
| GEOCENTR | Geocentric |
| BARYCENT | Barycentric |
| HELIOCEN | Heliocentric |
| LSRK | Local standard of rest (kinematic) |
| LSRD | Local standard of rest (dynamic) |
| GALACTOC | Galactocentric |
| LOCALGRP | Local Group |
| CMBDIPOL | Cosmic microwave background dipole |
| SOURCE | Source rest frame |
Notes. These are the allowed values of the SPECSYSa, SSYSOBSa, and SSYSSRCa keywords.
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