HD 25558
A slowly pulsating B star and spectroscopic binary in Taurus.
HD 25558, also designated V1133 Tauri and 40 Tauri, is a variable star about 700 light years from Earth in Taurus. With an apparent magnitude near 5.3, it is faintly visible to the naked eye under dark skies. It is a slowly pulsating B star whose brightness varies between Hipparcos magnitude 5.28 and 5.32 over 1.53232423 days. The star is a spectroscopic binary with an orbital period of about 8.9 years.
Quick Facts
- Flamsteed designation
- 40 Tauri
- Variable star designation
- V1133 Tauri
- Distance from earth
- about 700 light years
- Apparent magnitude range
- 5.28 to 5.32 (Hipparcos)
- Binary orbital period
- about 8.9 years
- Primary rotation period
- about 6 days
Facts from the source article.
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