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List of nearby stellar associations and moving groups

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This list is incomplete; you can help by adding missing items. (February 2020)
Main associations of the galactic plane in the night sky
Star density maps of the Gaia Catalogue of Nearby Stars.The Sun is located at the centre of both maps. The regions with higher density of stars are shown; these correspond with known star clusters (Hyades and Coma Berenices) and moving groups.

This is a list of nearby stellar associations and moving groups. A stellar association is a very loose star cluster, looser than an open cluster. A moving group is the remnant of such a stellar association. Members of stellar associations and moving groups share similar kinematic properties, as well as similar ages and chemical composition.

The list is sorted by the distance to the Solar System.

Nearby (≤500 light-years) associations and groups
Name Associated star or cluster Constellation Average distance (light-years) Age (million years) Note Reference
Oceanus Luhman 16 6-160 510 Closest moving group.
Castor Moving Group Castor, DX Cancri, Vega, Fomalhaut, etc. <80 Disputed existence.
Ursa Major association Alioth, Mizar, Merak, etc. Ursa Major 80 414
AB Doradus moving group AB Doradus Dorado 100 150
β Pictoris moving group β Pictoris Pictor 100 24
Carina-Near moving group Carina 100 200
Hercules-Lyra association Hercules + Lyra 100 260 might be a stellar stream
Tucana-Horologium association Tucana + Horologium 150 45 Formerly part of the GAYA (Great Austral Young Association)
Hyades Hyades Taurus 153 750 Closest open cluster. Reported for reference.
Columba association Columba 160 42 Formerly part of the GAYA (Great Austral Young Association)
TW Hydrae association TW Hydrae Hydra 160 10
Carina Association Carina 200 45 Formerly part of the GAYA (Great Austral Young Association)
Argus association IC 2391 Vela + Carina 240 45 May or may not be related to IC 2391
Coma Star Cluster Coma Star Cluster Coma Berenices 280 562 Second closest open cluster. Reported for reference.
Volans-Carina association Volans + Carina 280 90 formerly Group 30
32 Orionis group 32 Orionis Orion 310 22
η Chamaeleontis moving group η Chamaeleontis Chamaeleon 310 11
χ Fornacis moving group χ1 Fornacis Fornax 320 500 other name: cluster Alessi 13
118 Tau association 118 Tauri Taurus 330 10
ε Chamaeleontis association ε Chamaeleontis Chamaeleon 330 3.7
Group 10 Ursa Major 330 400 or ~1000 proposed moving group; alternative name: Group X
Lower Centaurus–Crux association Centaurus + Crux 360 15 Subgroup of the Scorpius–Centaurus association
Group 29 Taurus 380 40 proposed moving group, overlaps with Taurus-Auriga, but is older
Taurus-Auriga association Taurus + Auriga 390 1.5 See also: Taurus Molecular Cloud; part of the Radcliffe wave
Group 26 Cassiopeia 401 <1000 proposed moving group
Octans association Octans 420 35
Upper Centaurus–Lupus association Centaurus + Lupus 420 16 Subgroup of the Scorpius–Centaurus association
Upper Scorpius association Scorpius 420 10 Subgroup of the Scorpius–Centaurus association
ρ Ophiuchi association ρ Ophiuchi Ophiuchus 430 2 See also: Rho Ophiuchi cloud complex
Pleiades Pleiades Taurus 444 112 Third closest open cluster. Reported for reference.
Corona Australis group Corona Australis 450 4.5
Upper Corona Australis group Corona Australis 480 10
Platais 8 cluster Carina 489 60 Open cluster. Reported for reference.
μ Tau association μ Eridani, μ Tauri Taurus 489 60

See also

References

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