Registry · deep sky

Cl* Westerlund 1 W 31

BlueSG SIMBAD s*b B0I+OB 11 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 03.79s
Declination: −45° 50′ 40.4″
Galactic l, b: 339.55, -0.3993
Parallax: 0.2756 mas
Proper motion: -2.409, -4.201 mas/yr

In the same field

within 9 arcmin · wider search

Object	Type	Separation	V
Cl* Westerlund 1 CN V	WolfRayet*	1.656″	—
Cl* Westerlund 1 BKS F	YellowSG	3.341″	15.05
Cl* Westerlund 1 W 30	**	3.617″	18.45
Cl* Westerlund 1 W 29	BlueSG	6.551″	18.66
Cl* Westerlund 1 W 10	BlueSG	7.41″	18.52
WR 77g	WolfRayet*	7.483″	19
Cl* Westerlund 1 W 33	BlueSG	8.862″	15.61
Cl* Westerlund 1 W 34	BlueSG	9.346″	18.15
Cl* Westerlund 1 W 28	BlueSG	9.365″	17.15
Cl* Westerlund 1 W 9	WolfRayet*	9.788″	17.47
Cl* Westerlund 1 W 38	BlueSG	11.25″	19.1

Provenance

where this card came from

Archive	Read at (UTC)	Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/cl-westerlund-1-w-31 · Registry entry updated 2026-08-14.