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hip-18957
Variable starIts story
40 Tauri is in fact a double system of spectroscopic twins, both B stars in slow pulsation. Their mutual orbit takes about nine years; meanwhile one rotates every 6 days and the other in barely 1.2. Eleven distinct pulsation frequencies have been identified between them, vibrating in perfect counterpoint 641 light-years away. The light arriving tonight left when Newton was publishing his Principia.
- Constellation
- Taurus
- Apparent magnitude
- 5.32
- Distance
- 640.9 light years
- Coordinates (J2000)
- RA 60.936° · Dec 5.436°
- Catalogue
- HIP 18957 · HD 25558
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