Ross 154

system

Ross 154 is a red dwarf 9.7 light-years away in Sagittarius, and one of the more active flare stars near the Sun — it brightens sharply several times a day. About 17% of the Sun's mass. No planets are confirmed.

Open in 3D viewSee Ross 154 in the live, interactive 3D map

Key facts

Type

Red dwarf (flare star)

Distance

9.71 light-years

Confirmed planets

Science

Classification

Type: Single red-dwarf system (flare star)
Central star: Ross 154 — M3.5V red dwarf (~3250 K, ~0.17 M☉)

Planets

Confirmed planets: None

Distance & nature

Distance: 9.71 light-years
Activity: Very active · flares several times a day (V1216 Sgr)

How we know

Note: No planets are confirmed. The map position is symbolic; the real distance is 9.71 light-years.

Discovery & history

Name: Named for the astronomer Frank Elmore Ross and its catalogue number.

Catalogued by Frank Elmore Ross in 1925; its frequent flaring earned the variable-star name V1216 Sagittarii.

Images

Where to find it — in Sagittarius, the Archer (IAU constellation chart). It is an unresolved point of light; its surface has never been imaged. — IAU / Sky & Telescope, R. Sinnott & R. Fienberg (CC BY 3.0) · Wikimedia Commons

Images from open archives · credit shown per image