UPSA Object Registry
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Cl* Westerlund 1 W 42

BlueSG SIMBAD s*b B9Ia+ 21 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 03.25s
Declination
−45° 50′ 52.2″
Galactic l, b
339.55, -0.4002
Parallax
0.0917 mas
Proper motion
-1.97, -3.502 mas/yr

In the same field

within 9 arcmin · wider search
ObjectTypeSeparationV
Cl* Westerlund 1 W 43b BlueSG 5.199″ —
Cl* Westerlund 1 W 40a LongPeriodV* Candidate 6.261″ 18.05
Cl* Westerlund 1 W 43 ** 6.289″ —
Cl* Westerlund 1 W 43a BlueSG 6.383″ 18.05
Cl* Westerlund 1 W 38 BlueSG 7.29″ 19.1
Cl* Westerlund 1 W 41 BlueSG 7.406″ 17.87
Cl* Westerlund 1 W 43c Star 8.186″ 18.35
WR 77g WolfRayet* 8.463″ 19
Cl* Westerlund 1 BKS F YellowSG 9.769″ 15.05
Cl* Westerlund 1 W 33 BlueSG 9.85″ 15.61
Cl* Westerlund 1 W 35 BlueSG 10.04″ 18.59

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-42 · Registry entry updated 2026-08-14.