Astronomy Abbreviations and Acronyms

1. SHAD
   Stelnar Horizon Attitude Determination
2. SHAD
   Stellar Horizon Atmospheric Dispersion
3. SHAD
   Stellar Horizon Attitude Determination
4. SHAR
   Stellar Horizon Atmospheric Refraction
5. SHARC
   Satellite for High Accuracy Radar Calibration
6. SHARE
   Space Station Heat Pipe Advanced Radiator Element
7. SHARP
   Slender Hypervelocity Aerothermodynamic Research Probe
8. SHL
   Science Header Line
9. SHP
   Standard Header Packet
10. SI
    Satellite Imaging
11. SI
    Scientific Investigation
12. SI
    Science Instrument
13. SIA
    Solar Inertial Attitude
14. SIAF
    Science Instrument Aperture File
15. SIB
    Science Instrument Branch
16. SIC
    Spacecraft Identification Code
17. SICRAL
    Sistema Italiano Per Comunicazioni Riservate Ed Allakmi
18. SID
    Sudden Ionospheric Disturbance
19. SID
    Software Implementation Directive
20. SIDC
    Sunspot Index Data Center

Last updated: August 3, 2021 — Total entries: 5,937