The motion of Proxima Centauri in 2016, revealing the fingerprints of a planet

This plot shows how the motion of Proxima Centauri towards and away from Earth is changing with time over the first half of 2016. Sometimes Proxima Centauri is approaching Earth at about 5 kilometres per hour — normal human walking pace — and at times receding at the same speed. This regular pattern of changing radial velocities repeats with a period of 11.2 days. Careful analysis of the resulting tiny Doppler shifts showed that they indicated the presence of a planet with a mass at least 1.3 times that of the Earth, orbiting about 7 million kilometres from Proxima Centauri — only 5% of the Earth-Sun distance.

Të drejtat:

ESO/G. Anglada-Escudé

Rreth fotografisë

Id:eso1629d
Tipi:Hartë
Data e Publikimit:Gus 24, 2016, 19:00 CEST
Publikime të ngjashme:eso1629
Përmasat:10034 x 3362 px

Rreth objektit

Emri:Proxima b, Proxima Centauri
Tipi:Local Universe : Star : Circumstellar Material : Planetary System
Kategori:Exoplanets

Formate Fotografish

JPEG i madh
1,4 MB
Publikim JPEG
450,4 KB

 

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