UPSA Object Registry
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Cl* Westerlund 1 W 12

YellowSG SIMBAD s*y A5Ia+ 28 papers
harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.
Right ascension
16h 47m 02.22s
Declination
−45° 50′ 59.0″
Galactic l, b
339.55, -0.3992
Magnitude V
17.57
Parallax
0.1545 mas
Redshift z
-0.00014913
Radial velocity
-44.71 km/s
Proper motion
-2.493, -3.692 mas/yr

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
Cl* Westerlund 1 CN J WolfRayet* 2.788″ —
[CRN2020] W1031 Star 4.921″ —
Cl* Westerlund 1 W 41 BlueSG 5.494″ 17.87
Cl Westerlund 1 OpenCluster 8.227″ —
Cl* Westerlund 1 W 40a LongPeriodV* Candidate 9.734″ 18.05
Cl* Westerlund 1 W 23a BlueSG 10.59″ 18.32
Cl* Westerlund 1 W 11 BlueSG 11.8″ 17.51
Cl* Westerlund 1 W 42 BlueSG 12.73″ —
Cl* Westerlund 1 W 24 BlueSG 13.61″ 18.71
Cl* Westerlund 1 W 43b BlueSG 13.87″ —
Cl* Westerlund 1 W 43a BlueSG 14.01″ 18.05

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/cl-westerlund-1-w-12 · Registry entry updated 2026-08-14.