Tycho catalogue
相关英语词汇推荐
- metallicity gradient
- MGS,Mars Global Surveyor
- dense star cluster
- standard rotational velocity star
- moderate-resolution spectrograph
- bipolar planetary nebula
- focal plane spectrometer
- subdwarf B star
- global positioning system
- Compton loss
- Great White Spot
- Flat Spectrum Radio Quasars
- starburst galaxies
- membership of cluster
- NOAO,National Optical Astronomical
- terminal-age main sequence(TAMS)
- Geneva color system
- initial planet
- Hubble distance
- plane of trajectory orbital